Stainless Steel Flat Head Open-End Smooth Round Body Blind Rivet Nuts

Technical Specifications — Stainless Steel Flat Head Open-End Smooth Round Body Blind Rivet Nuts

1. Product Identification

Product Name: Stainless Steel Flat Head Open-End Smooth Round Body Blind Rivet Nuts

Alternative Names:

• Flanged Plain Body Rivet Nuts

• Stainless Steel Open-End Rivet Nuts

• Smooth Round Body Blind Rivet Nuts

• Flat Head Threaded Rivet Inserts

• Stainless Steel Threaded Inserts for Sheet Metal

Product Category: Stainless Steel Blind Rivet Nuts

Head Configuration: Flat Head / Flanged Head

Body Configuration: Smooth Round Body / Plain Body

End Configuration: Open End

Material: Stainless Steel

Stated Product-Family Grip Range: 0.5–6.0 mm

Installation Access: One-Sided

Primary Function: Creation of a mechanically retained internal thread in a compatible panel or fabricated assembly.

2. Available Metric Thread Sizes

The supplied product introduction identifies M3, M4, M5, M6, M8 and M10.

The general technical description also refers to M3–M12. 

However, M12 is not included in the specific product introduction and should be confirmed separately before being presented as a standard size for this model.

Custom thread sizes and drawing-specific requirements may be reviewed for manufacturing feasibility.

3. Material Selection

A2 Stainless Steel

A2 stainless steel is commonly associated with austenitic stainless steel grades such as AISI 304, depending on the applicable material specification.

It may be appropriate for many indoor and moderately corrosive industrial environments.

A4 Stainless Steel

A4 stainless steel is commonly associated with molybdenum-bearing austenitic stainless steel grades such as AISI 316, depending on the applicable material specification.

It may offer improved resistance to certain chloride-containing environments compared with A2.

Material Verification

A2 and A4 are not interchangeable specifications in every application.

The customer should confirm:

• Required material grade.

• Applicable material specification.

• Corrosion exposure.

• Mechanical requirements.

• Material identification or certification requirements.

• Any special inspection or traceability provisions.

The original technical text mentions zinc-plated steel and aluminum as other available product-family materials. These are not the specified material for this stainless steel product page.

4. Grip Range and Material Thickness

Stated Product-Family Grip Range: 0.5–6.0 mm

Grip range describes the permitted thickness of the material or material stack that a specific rivet nut is designed to retain after installation.

The actual grip range must be selected according to the individual rivet nut dimensions.

Important Grip Selection Factors

• Total panel thickness.

• Number of material layers.

• Body length and deformable section.

• Parent-material properties.

• Available blind-side clearance.

• Installation stroke or setting force.

• Required joint retention.

A family-level range of 0.5–6.0 mm does not mean that every listed thread size is suitable for every thickness within that range.

The appropriate grip range must be verified against the product-specific dimensional drawing.

5. Flat Head and Flange Geometry

The flat flanged head provides a bearing surface on the accessible side of the workpiece.

Its geometry affects seating, local load distribution and the installed projection above the panel.

Required Dimensional Parameters

• Head outside diameter.

• Head thickness.

• Body outside diameter.

• Overall body length.

• Thread size and pitch.

• Grip range.

• Recommended installation-hole diameter.

• Installation-hole tolerance.

The flange can help support the mounting-hole area, but the actual resistance to pull-through or panel deformation depends on the complete joint.

For thin or relatively soft materials, the flange diameter and local bearing stress deserve particular attention.

Where a flush or near-flush surface is required, a dedicated low-profile or countersunk rivet nut should be evaluated.

6. Smooth Round Body Design

The plain cylindrical body is intended for installation in a suitably dimensioned round hole.

Unlike knurled rivet nuts, this configuration does not feature pronounced external anti-rotation ribs.

Unlike full-hex rivet nuts, it does not depend on a hexagonal mounting hole.

Engineering Advantages

• Compatible with appropriately prepared round holes.

• Straightforward cylindrical insertion geometry.

• Suitable for evaluation in conventional sheet-metal fabrication processes.

• Available in the specified flat-head, open-end configuration.

Engineering Limitations

The rotational resistance of a smooth round body depends on the installed deformation, contact conditions, hole fit and parent-material properties.

For applications requiring high tightening torque or frequent servicing, the engineer should confirm that the selected plain-body design provides sufficient torque-to-turn resistance.

Knurled or hexagonal alternatives may be more appropriate for some applications.

7. Installation Hole Requirements

The installation hole must match the selected rivet nut dimensions.

An oversized hole may reduce retention or increase the likelihood of insert rotation.

An undersized hole may prevent proper insertion, damage the part or deform the panel.

Hole Preparation Considerations

• Hole diameter.

• Diameter tolerance.

• Hole roundness.

• Burr condition.

• Panel flatness.

• Parent-material hardness.

• Coating or surface condition.

• Accessibility for the installation tool.

Round holes may be produced by drilling, punching or other suitable manufacturing processes.

The selected process should be capable of maintaining the required dimensional tolerance and edge quality.

Dimensional Drawing Reference

The supplied technical information identifies PDF pages 101–102 as the detailed dimensional reference.

These pages should be checked against the selected product model before publishing specific hole diameters, body dimensions or size-by-size grip ranges.

8. Installation Principle

A blind rivet nut is installed using a compatible tool that engages its internal thread.

The tool applies a controlled axial setting action, deforming the collapsible section of the insert behind the parent material.

The resulting blind-side retaining bulge and the accessible-side flange secure the rivet nut within the specified grip range.

Typical Installation Sequence

1. Confirm the correct rivet nut size and grip range.

2. Prepare the mounting hole to the approved dimensions.

3. Inspect the hole and panel condition.

4. Select the compatible setting mandrel and nosepiece.

5. Thread the insert onto the setting mandrel as required by the tool design.

6. Position the rivet nut in the mounting hole.

7. Seat the flange against the panel.

8. Apply the specified setting stroke or force.

9. Form the retaining bulge behind the panel.

10. Release the tool and inspect the installed thread and flange.

Installation Equipment

Depending on the selected product and production requirements, suitable installation systems may include:

• Manual rivet nut setting tools.

• Pneumatic or hydro-pneumatic equipment.

• Compatible automated installation equipment.

The correct tooling and setting parameters must be confirmed for stainless steel inserts, which may require different setting conditions from otherwise similar aluminum or carbon steel products.

9. Blind-Side Clearance

Blind-side clearance is the available space behind the parent material for the insert body, deformation during setting and any projecting mating bolt.

This dimension should be checked before selecting a rivet nut for enclosed structures.

Design Considerations

• Uninstalled body length.

• Required deformation space.

• Final installed blind-side geometry.

• Internal equipment clearance.

• Mating bolt length.

• Access for installation and maintenance.

Insufficient blind-side clearance can interfere with proper installation or create unwanted contact with internal components.

10. Torque-to-Turn Resistance

Torque-to-turn is the torque required to initiate rotation of an installed rivet nut relative to the surrounding parent material under defined test conditions.

For a smooth round body, the result depends on:

• Hole diameter and tolerance.

• Panel material and hardness.

• Grip thickness.

• Installed body deformation.

• Setting stroke or force.

• Flange seating.

• Surface condition.

• Test method.

No universal torque-to-turn value is stated for this product family.

Where rotational resistance is important, the OEM should establish an acceptance criterion based on the intended bolt tightening torque and servicing requirements.

11. Pull-Out Resistance and Joint Strength

Pull-out resistance describes the axial load required to extract an installed rivet nut from the parent material.

The value depends on the insert geometry, installed deformation, parent-material properties, grip thickness and hole condition.

Relevant Failure Modes

Insert Pull-Out: The rivet nut is extracted from the panel.

Insert Rotation: The installed rivet nut rotates during tightening or removal.

Parent-Material Pull-Through: The panel deforms or fails around the hole.

Internal Thread Stripping: The female thread fails under excessive loading.

Mating Bolt Failure: The bolt fails in tension, shear or another loading mode.

Fatigue-Related Failure: Repeated or fluctuating loading degrades the connection.

The flange alone does not guarantee a particular pull-out capacity.

For structural or high-reliability applications, the complete assembly should be evaluated using defined mechanical test requirements.

12. Open-End Configuration and Thread Engagement

The open-end configuration permits the mating bolt to extend through the insert when sufficient clearance is available.

This can be useful where bolt engagement length varies.

However, the designer should verify:

• Required thread engagement.

• Mating bolt length.

• Available space behind the panel.

• Potential interference with adjacent components.

• Service and maintenance requirements.

The open-ended threaded passage does not provide environmental sealing.

If the application requires a closed cavity or protection against fluid passage, a suitable closed-end or sealing arrangement should be considered.

13. Stainless Steel Corrosion and Material Compatibility

Stainless steel is frequently selected for its corrosion resistance, but performance depends on the grade and exposure environment.

Relevant Factors

• Chloride exposure.

• Cleaning chemicals.

• Temperature.

• Moisture and condensation.

• Crevice conditions.

• Surface contamination.

• Contact with dissimilar metals.

Galvanic Corrosion

When stainless steel contacts a dissimilar metal in the presence of an electrolyte, galvanic corrosion may affect the less noble material.

For mixed-material assemblies, evaluate the complete joint rather than relying on stainless steel material selection alone.

Environmental Sealing

A stainless steel rivet nut does not automatically make an enclosure waterproof or dustproof.

Environmental performance depends on the complete fastening arrangement, including the open threaded bore and flange-to-panel interface.

Where an ingress protection requirement applies, the complete enclosure or joint should be validated under the relevant test conditions.

14. International Engineering References

The following references may be relevant to technical drawings, thread definitions and material selection.

They are engineering references, not blanket product certification claims.

The applicable material standard must match the actual stock form and manufacturing route.

A reference to ISO 3506 or an ASTM stainless steel material specification does not establish automatic compliance for a particular rivet nut.

15. Engineering Applications

Automotive and Transportation

Evaluate vibration, tightening torque, repeated servicing, material compatibility and corrosion exposure.

Electrical Enclosures

Verify hole preparation, panel support, grounding requirements and available blind-side clearance.

Industrial Machinery

Consider joint retention, maintenance cycles, panel deformation and fatigue loading.

HVAC and Building Equipment

Evaluate exposure conditions, stainless steel grade, dissimilar-metal contact and installation repeatability.

Food-Processing Equipment

Review cleaning environments, material requirements, crevice conditions and the complete hygienic design where applicable.

Electronics and Instrumentation

Check compact assembly clearance, installation-tool access and local panel deformation.

General Sheet Metal Fabrication

Specify hole dimensions, grip range and installation inspection requirements for consistent production.

16. OEM Manufacturing and Customization

JUXIN FASTENERS manufactures standard industrial fasteners and drawing-specific components.

Our broader manufacturing capabilities include cold heading, cold forming, CNC machining, secondary turning, metal stamping, 

plastic injection molding and combined manufacturing processes.

For suitable custom metal components, cold forming may be followed by secondary machining to achieve required dimensions or special features.

The production route for a particular stainless steel rivet nut or custom component is determined by its geometry, material, tolerances and order volume.

Customization Requirements for Review

• Nonstandard thread sizes.

• Special head dimensions.

• Modified body length.

• Custom grip range.

• Material grade requirements.

• Installation-hole compatibility.

• Customer-specific dimensional tolerances.

• Mechanical performance criteria.

• Inspection and traceability requirements.

• Packaging and shipment specifications.

17. Technical Documentation and RFQ Checklist

For accurate product selection and quotation, please provide:

1. Thread size and tolerance.

2. Stainless steel grade.

3. Product drawing or existing reference part.

4. Panel material and thickness.

5. Installation-hole diameter and tolerance.

6. Required grip range.

7. Blind-side clearance.

8. Expected tightening torque.

9. Pull-out or anti-rotation requirements, if applicable.

10. Corrosion and environmental requirements.

11. Sample quantity and production volume.

12. Inspection, documentation and packaging requirements.

Drawing Reference: Consult the existing JUXIN specification PDF, pages 101–102, 

after confirming that the dimensional table corresponds to this flat-head, open-end, smooth round body stainless steel variant.

Key Engineering Advantages

1. Permanent Female Threads in Thin Sheet Metal

Thin sheet metal often cannot provide sufficient thread engagement when tapped directly.

A stainless steel blind rivet nut creates a mechanically retained female thread without requiring a separate nut behind the panel.

This can simplify the installation of removable covers, brackets, mounting plates, machinery guards and other components that may require maintenance or replacement.

The actual connection capacity depends on the installed rivet nut, mating bolt, parent material, panel thickness and applied loads.

2. Flat Flanged Head for Panel Support

The flat head provides a bearing surface on the accessible side of the panel.

Its flange geometry helps position the insert during setting and contributes to load distribution around the mounting hole.

A correctly selected flange can help reduce localized contact pressure compared with a smaller bearing surface, but it does not independently guarantee a particular pull-out or pull-through resistance.

The designer should evaluate:

• Flange outside diameter.

• Flange thickness.

• Panel material and strength.

• Installation-hole diameter.

• Applied axial and transverse loads.

• Local deformation around the hole.

The installed flange projects above the panel surface. Applications requiring minimal head projection should be evaluated using a suitable low-profile or countersunk rivet nut design.

3. Smooth Round Body for Straightforward Hole Preparation

The plain cylindrical body is designed for installation in an appropriately dimensioned round hole.

Round holes can be produced using drilling, punching or other suitable sheet-metal manufacturing processes.

Compared with a full-hex rivet nut, the smooth round body does not require a hexagonal mounting hole.

This can simplify hole preparation in certain production environments, particularly when existing sheet-metal components already incorporate round holes.

However, smooth-body designs may provide lower resistance to rotation than appropriately selected knurled or hexagonal alternatives in some parent materials.

For assemblies involving higher bolt tightening torque, repeated maintenance or vibration, anti-rotation performance should be evaluated using representative panels.

4. One-Sided Installation in Enclosed Structures

Blind rivet nuts are particularly useful when the rear side of the workpiece is inaccessible.

Typical examples include:

• Hollow metal sections.

• Fabricated box structures.

• Electrical cabinets.

• Machinery housings.

• Enclosed equipment frames.

• Sheet-metal assemblies with restricted rear access.

The installation process does not require rear-side access to hold a loose nut.

Nevertheless, adequate blind-side clearance is necessary for the body deformation and any bolt protrusion after assembly.

5. Stainless Steel for Material and Environmental Compatibility

Stainless steel is often selected for industrial fastening applications where corrosion resistance, appearance, cleaning requirements or compatibility with the surrounding assembly are important.

The appropriate stainless steel grade depends on the intended environment and mechanical requirements.

A2 Stainless Steel: Commonly associated with austenitic stainless steel grades such as AISI 304, depending on the specified material system.

A4 Stainless Steel: Commonly associated with molybdenum-bearing austenitic stainless steel grades such as AISI 316, depending on the specified material system.

A4 may offer improved resistance to certain chloride-containing environments compared with A2, but neither grade is universally immune to corrosion.

For outdoor, coastal, chemical-processing or washdown environments, the customer should define the required material grade, exposure conditions and acceptance criteria.

The supplied product data does not establish that every listed size is available in both A2 and A4.

6. Open-End Thread for Flexible Bolt Engagement

The open-end configuration allows the mating bolt to extend through the rivet nut when the surrounding assembly provides sufficient clearance.

This may provide flexibility in selecting bolt engagement length.

However, the engineer must account for:

• Available blind-side space.

• Bolt protrusion beyond the insert.

• Interference with internal equipment.

• Required thread engagement.

• Accessibility during assembly and servicing.

An open-end rivet nut does not provide a closed threaded cavity or prevent fluid and contaminant passage through the threaded bore.

Where a closed cavity or environmental sealing is required, a suitable closed-end or sealing configuration should be considered.

Engineering Selection: Smooth Round Body vs. Knurled and Hex Rivet Nuts

The choice of rivet nut body geometry should be based on the actual installation and loading requirements rather than thread size alone.

When Is a Smooth Round Body Appropriate?

A smooth round body may be suitable when:

• The panel is prepared with a correctly dimensioned round hole.

• The required tightening torque is compatible with the insert's retention performance.

• The parent material supports proper blind-side deformation.

• The assembly does not require the additional geometric engagement of a hexagonal body.

• The product can be installed consistently using suitable setting equipment.

When Should Engineers Consider a Knurled or Hexagonal Body?

Alternative body geometries may be preferable where:

• Higher resistance to insert rotation is required.

• Repeated bolt installation and removal are expected.

• The parent material provides insufficient frictional retention.

• The application involves demanding torque or service conditions.

• A compatible non-round mounting hole can be produced.

The actual performance difference should be established through product-specific data and assembly testing.

Industrial Applications and Engineering Solutions

Automotive and Transportation Equipment

Stainless steel flanged plain body rivet nuts may be evaluated for vehicle equipment housings, sheet-metal brackets, service panels and other compatible assemblies.

Design engineers should consider vibration, cyclic loading, bolt tightening torque, material compatibility and the expected number of service cycles.

The selected stainless steel grade should match the intended exposure environment and the requirements of the surrounding components.

Electrical Enclosures and Control Cabinets

These inserts can provide reusable threaded attachment points for mounting brackets, enclosure covers, internal support plates and cabinet hardware.

One-sided installation is useful when the rear of the panel is inaccessible after fabrication.

Where electrical grounding or bonding is required, stainless steel contact properties, panel coatings and the complete connection design should be evaluated.

 Electrical continuity should not be assumed without verification.

Industrial Machinery and Equipment Frames

Machinery guards, access panels, fabricated housings and equipment brackets may require threaded connections that remain in place when bolts are removed.

A blind rivet nut can simplify servicing without the need to access a loose nut behind the panel.

For machinery applications, engineers should assess bolt preload, panel deformation, rotational resistance and fatigue or vibration loading.

Food-Processing and Washdown Equipment

Stainless steel rivet nuts may be considered for suitable equipment housings, protective covers and non-product-contact fastening applications.

Material selection should reflect cleaning chemicals, moisture exposure and corrosion requirements.

A stainless steel rivet nut alone does not establish hygienic design, washdown suitability or environmental sealing. 

These properties depend on the complete assembly and applicable validation.

HVAC and Building Equipment

Sheet-metal housings, mounting brackets and service covers may benefit from retained female threads and one-sided installation.

Stainless steel may be considered where environmental exposure or material compatibility makes it preferable to plated carbon steel.

For outdoor installations, evaluate the material grade, drainage, dissimilar-metal contact and exposure conditions.

Electronics and Industrial Instrumentation

Compact equipment housings, mounting brackets and removable metal panels may use stainless steel threaded inserts where a round mounting hole and reusable fastening point are required.

Important considerations include available installation space, panel distortion, blind-side clearance and service access.

General Sheet Metal Fabrication

Flanged plain body rivet nuts support threaded connections in cabinets, metal frames, brackets and other fabricated structures.

For production applications, consistent hole dimensions and controlled installation settings are essential.

Stainless Steel Rivet Nuts and Galvanic Corrosion

Stainless steel does not eliminate every corrosion risk in a mixed-material assembly.

When stainless steel fasteners contact aluminum, zinc-coated steel or other dissimilar metals in the presence of an electrolyte, galvanic corrosion may become a design consideration.

The severity depends on the material combination, exposed surface areas, moisture conditions and electrical contact.

Possible engineering measures include appropriate material selection, compatible coatings, insulating components, environmental protection and joint design changes.

For outdoor or marine-related equipment, the complete fastening system should be reviewed rather than selecting stainless steel solely by material name.

OEM Manufacturing and Custom Rivet Nut Solutions

JUXIN FASTENERS is an industrial fastener and custom component manufacturer with production workshops and more than 20 years of industry experience.

Our manufacturing capabilities include cold heading, cold forming, secondary CNC machining and turning, metal stamping, 

plastic injection molding and combined manufacturing processes where appropriate to the product design.

For suitable metal components, cold forming may be followed by secondary machining to achieve particular geometries, dimensions or tolerances.

The manufacturing process for a specific rivet nut or custom part is selected according to its geometry, material, dimensional requirements, tooling and production quantity.

JUXIN can review OEM requirements involving:

• Metric thread sizes and special thread configurations.

• Flat head diameter and thickness.

• Smooth body diameter and length.

• Custom grip ranges.

• Installation-hole compatibility.

• Stainless steel material grades.

• Drawing-specific dimensions and tolerances.

• Special inspection and performance requirements.

• Sample quantities and production volumes.

• Customer-specific packaging and identification.

Our objective is to support customers' engineering designs with practical manufacturing solutions and flexible production coordination.

OEM Procurement and RFQ Requirements

For purchasing managers, supplier development teams and mechanical engineers, the following information helps establish an accurate quotation:

1. Required thread size and thread tolerance.

2. Stainless steel grade or material specification.

3. Product drawing or existing part number.

4. Panel material and total thickness.

5. Recommended or existing installation-hole dimensions.

6. Required grip range.

7. Available blind-side clearance.

8. Bolt tightening torque and retention requirements.

9. Environmental and corrosion requirements.

10. Sample quantity, production quantity and estimated annual usage.

11. Inspection, traceability and packaging requirements.

Where the customer is replacing an existing rivet nut, an approved sample or dimensional drawing can help identify the correct equivalent geometry.

Request an OEM Quotation or Technical Review

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

Stainless Steel Blind Rivet Nuts | Custom Threaded Inserts | Flexible OEM Fastener Manufacturing

Product Packaging — Stainless Steel Flat Head Open-End Smooth Round Body Blind Rivet Nuts

Standard Industrial Packaging

JUXIN FASTENERS supplies stainless steel flat head open-end smooth round body blind rivet nuts with packaging arrangements suitable for OEM assembly operations,

 industrial purchasing programs, distributors and international shipment.

The standard packaging information for this product specifies inner poly foam protection, outer cartons and palletized shipment packaging where required.

Packaging quantities and final configurations are determined according to the selected thread size, part dimensions, order quantity and customer requirements.

Packaging Specifications

The dimensions above are the supplied packaging references for this product.

The quantity per package, quantity per carton, net weight, gross weight and pallet loading configuration are subject to order-specific confirmation.

Stainless Steel Product Protection

Packaging should help protect stainless steel rivet nuts from unnecessary handling damage, contamination and moisture exposure during storage and transportation.

Particular attention should be given to avoiding contamination from carbon steel particles or other foreign materials that could affect surface appearance or corrosion performance.

Suitable storage and handling practices should be selected according to the specified stainless steel grade and the customer's application requirements.

For products intended for demanding corrosion environments, any special cleanliness, surface-condition or packaging requirements should be agreed before shipment.

OEM and Customer-Specific Packaging

JUXIN FASTENERS can review customer-specific packaging requirements, including:

• Defined quantities per inner package.

• Specified quantities per carton.

• Product segregation by thread size.

• Customer part-number identification.

• Material grade identification.

• Batch or lot labeling.

• Carton labels and shipping marks.

• Packaging for assembly-line handling.

• Packaging for warehouse inventory management.

• Customer-specific palletization instructions.

Where material traceability or special identification is required, the documentation and labeling requirements should be established during RFQ review and order confirmation.

Packaging for International OEM Programs

For industrial purchasing and supply-chain teams, consistent packaging can support efficient receiving, inventory control and production-line material handling.

Customers may provide packaging instructions covering unit quantities, labels, shipment identification and handling requirements.

Final packaging arrangements are confirmed according to the actual order and agreed customer specifications.

Request Packaging Information or a Quotation

For packaging review and quotation, please provide:

• Required thread size.

• Stainless steel grade.

• Product drawing or part number.

• Order quantity.

• Preferred packing quantity.

• Customer labeling instructions.

• Shipping destination.

• Any special handling or traceability requirements.

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

Flexible OEM Manufacturing | Stainless Steel Fasteners | Customer-Specific Packaging