Large-Flange Open-End Full-Hex Blind Rivet Nuts

Technical Specifications – Flat Head Open-End Full-Hex Blind Rivet Nuts

1. Standard Product Specifications

M4 is included in the supplied product-family size range, while the detailed specification list identifies M5–M12. 

Exact dimensions and availability should be confirmed against the corresponding technical drawing.

2. Metric Thread Specifications

Thread pitches are standard ISO metric coarse-thread references. Actual product thread dimensions and tolerances must follow the approved drawing.

Applicable engineering references include ISO 261 for metric thread selection and ISO 965 for metric thread tolerances.

3. Fast Facts and Engineering Features

Exceptional Torque-to-Turn Capability

The full-hexagonal body engages with a corresponding hexagonal mounting hole, providing resistance to insert rotation during tightening, loosening, and repeated servicing.

Compared with conventional round-body inserts, full-hex designs can offer improved torque-to-turn resistance when installed in correctly dimensioned holes.

Actual torque capacity depends on insert geometry, panel material, hole tolerances, and installation quality.

High-Speed Industrial Assembly

Full-hex blind rivet nuts can be installed using compatible:

• Manual hand-setting tools

• Pneumatic rivet nut tools

• Hydraulic setting systems

• Multi-head installation equipment

• Automated and robotic assembly systems

Tool compatibility and setting parameters must be established for the selected rivet nut size.

Strong Internal Threads in Thin Materials

The insert provides a steel female thread in workpieces that may be too thin for effective conventional tapping.

The product family includes grip configurations beginning at 0.5 mm.

For thin materials, correct hole geometry, panel strength, and controlled installation deformation are essential to reliable performance.

Improved Threaded Joint Functionality

The installed rivet nut creates a reusable internal thread for removable bolted connections.

This can reduce the need for loose backside nuts and simplify maintenance access.

Overtightening and Thread-Stripping Considerations

The original high-strength hexagonal design is intended for demanding threaded connections where resistance to insert rotation and joint damage is important.

However, no rivet nut should be considered automatically protected against overtightening.

Thread stripping, bolt fracture, insert rotation, and panel damage depend on the relative strengths of the complete joint components.

In a properly engineered joint, the mating bolt may reach its failure limit before the installed insert. 

This behavior must be demonstrated through application-specific testing rather than assumed for every size or installation.

Typical Assembly Materials

Potential applications include:

• Tubular steel

• Hydroformed steel components

• Magnesium castings

• Aluminum extrusions

• Thin sheet steel

• Fabricated metal panels

• Industrial equipment housings

Compatibility must be evaluated according to the mechanical properties and thickness of the receiving material.

4. Full-Hexagonal Body and Large-Flange Design

Full-Hex Body Geometry

The full hexagonal body provides positive mechanical engagement with a corresponding hexagonal installation hole.

This helps prevent the insert from rotating under bolt-tightening torque.

For industrial equipment that requires repeated maintenance, anti-rotation performance is an important selection factor.

Large-Flange Head

The large-flange head provides an increased bearing surface around the installation hole.

Engineering benefits may include:

• Improved distribution of local bearing loads

• Additional support around the installation opening

• Resistance to flange pull-through under suitable conditions

• More stable seating against the workpiece surface

Flange diameter, thickness, and workpiece properties must be considered when determining allowable joint loads.

Open-End Configuration

The open-end construction permits the mating bolt to extend through the internal threaded section.

This can be useful when additional bolt penetration is required and adequate backside clearance exists.

For applications requiring restricted bolt penetration or protection against fluid entry through the threaded bore, closed-end rivet nuts may be more suitable.

5. High-Strength Hexagonal Threaded Insert Performance

The combination of a full hexagonal body and large flange is intended to provide high torque-to-turn resistance and effective retention in suitable thin-sheet assemblies.

High-strength hexagonal blind rivet nuts may be evaluated as alternatives to welded nuts or self-clinching nuts in selected applications.

The suitability of this substitution depends on the required clamp load, panel material, insert dimensions, installation method, and joint loading.

Comparison With Weld Nuts

Weld nuts require an appropriate welding process and compatible base material.

Blind rivet nuts can create internal threads without welding heat input and can be installed where backside access is restricted.

Comparison With Self-Clinching Nuts

Self-clinching nuts require suitable material hardness, thickness, and press installation conditions.

Blind rivet nuts use mechanical body deformation and may be preferred for hollow sections or single-sided access.

Clamp Force and Joint Strength

The original high-strength design description identifies clamp-force capability comparable to certain weld-nut and clinch-nut applications.

Such performance is design-dependent and must be confirmed through joint-specific validation.

No universal equivalence to welded or self-clinching connections is implied.

6. Surface Finish and Corrosion Resistance

Standard Surface Treatment

Color Zinc Plating

The zinc-plated finish provides sacrificial corrosion protection for the steel body.

The original technical specification also describes a zinc-plated, clear-passivated configuration with a target of 240 hours of resistance to red corrosion under ASTM B117 testing.

These finish descriptions must be distinguished when ordering. The standard product listed on this page is Color Zinc Plated.

ASTM B117 — Salt Spray Testing

ASTM B117 provides a standardized salt-spray exposure test method.

A 240-hour red-rust resistance requirement may be specified for an appropriate coating system, subject to confirmation of the actual coating, passivation, acceptance criteria, and supporting test report.

The 240-hour value is a stated technical specification target, not a verified guarantee for every Color Zinc variant.

Hexavalent Chromium-Free Requirements

The original specification identifies a hexavalent chromium-free finish.

Where required, customers should specify hexavalent chromium-free passivation and applicable substance restrictions in their purchasing documents.

Compliance with RoHS or other regulatory requirements should be confirmed through material and coating documentation for the supplied configuration.

Additional Surface Finish Options

Alternative coating and passivation requirements may be reviewed for custom orders.

Customers should identify:

• Required finish type

• Coating thickness

• Corrosion-resistance target

• Passivation requirements

• Environmental exposure

• Applicable test standard

• Required documentation

7. Hexagonal Installation Hole Production

Full-hex blind rivet nuts require matching hexagonal installation holes to achieve the intended anti-rotation performance.

Hexagonal Hole Preparation Methods

Depending on the workpiece material and manufacturing process, holes may be produced by:

• Hexagonal punching

• Broaching

• CNC machining

• Suitable hexagonal hole-forming tools

Round-to-Hex Hole Conversion

The original technical information describes a dedicated hole-forming tool that converts a prepared round hole into a hexagonal opening.

The general process involves:

1. Preparing a correctly sized round pilot hole.

2. Positioning the compatible hexagonal hole-forming tool.

3. Forming the hexagonal opening using the specified tool process.

4. Inspecting the completed hole dimensions.

5. Installing the corresponding full-hex blind rivet nut.

This method may be useful where hexagonal holes must be produced in components with restricted backside access.

Tool availability, compatibility, and the required starting-hole dimensions must be confirmed for the specific application.

Critical Hole Requirements

Engineers should verify:

• Hexagonal across-flats dimension

• Hole dimensional tolerance

• Workpiece thickness

• Edge distance

• Burr condition

• Surface coating

• Material hardness

• Hole alignment

Incorrect hole geometry may reduce torque-to-turn resistance or cause installation damage.

8. Installation and Assembly Recommendations

Step 1 — Confirm the Grip Range

Select the correct rivet nut according to the actual workpiece thickness.

The family grip range is 0.5–5.0 mm, but each individual part has its own approved installation range.

Step 2 — Inspect the Hexagonal Hole

Verify the hole geometry and dimensions against the technical drawing.

Step 3 — Select the Correct Setting Equipment

Use an appropriate threaded mandrel and compatible installation tool.

Step 4 — Position the Rivet Nut

Insert the full-hex body into the prepared hole and seat the flange against the workpiece.

Step 5 — Complete the Setting Operation

Apply the specified setting stroke or force.

The deformable section of the rivet nut forms a retaining bulge behind the panel.

Step 6 — Inspect the Installed Insert

Check for:

• Correct flange seating

• Adequate backside deformation

• Thread damage

• Insert rotation

• Panel cracking

• Incorrect alignment

• Excessive workpiece distortion

Step 7 — Validate the Joint

Where required, perform torque-to-turn, pull-out, push-out, and application-specific joint tests.

9. Application Engineering

Automotive and Transportation Assemblies

Full-hex blind rivet nuts may be used in selected automotive structural-adjacent brackets, body components, tubular sections, and fabricated mounting systems.

Critical joint applications require appropriate engineering approval and validation.

Electrical Engineering and Switchgear

Suitable applications may include control cabinet panels, electrical enclosures, mounting rails, equipment brackets, and removable service covers.

Industrial Machinery

Blind threaded inserts provide removable threaded mounting points for machine housings, protective covers, equipment frames, and fabricated metal structures.

Aluminum Extrusions and Magnesium Castings

Full-hex inserts may be evaluated where the substrate geometry and material strength support the installation process.

Particular attention should be paid to deformation, cracking, and local bearing stresses.

Hydroformed and Tubular Components

Single-sided installation can be useful in enclosed or hollow structures where conventional nuts cannot be accessed from behind.

10. Custom Designs and OEM Specifications

JUXIN FASTENERS can review drawing-based custom requirements, including:

• Special metric or imperial threads

• Modified flange diameter

• Modified flange thickness

• Custom hexagonal body dimensions

• Special body lengths

• Different grip ranges

• Alternative steel specifications

• Custom surface finishes

• Application-specific corrosion requirements

• Special installation geometries

• Customer-defined inspection requirements

Manufacturing feasibility, minimum order quantity, tooling, and delivery requirements are confirmed during quotation review.

11. Technical Drawings, PDF and CAD

Detailed Product Specification: PDF Pages 97–98

Please refer to the detailed technical specification sheet and available CAD drawings for exact dimensions and product selection.

The drawing should be used to confirm:

• Thread dimensions

• Flange diameter and thickness

• Hexagonal body dimensions

• Body length

• Recommended installation-hole dimensions

• Grip range

• Dimensional tolerances

For drawing-based OEM inquiries, customers are encouraged to provide PDF, STEP, or other applicable engineering files.

12. OEM RFQ Information

To prepare an accurate technical and commercial quotation, please provide:

Key Product Advantages

High Torque-to-Turn Resistance

The full hexagonal body provides mechanical anti-rotation engagement with the installation hole. 

This helps prevent the insert from spinning when tightening or removing the mating bolt.

High-Strength Threaded Connection

The steel threaded insert provides a practical solution for creating load-bearing internal threads in thin sheet metal where conventional tapping may not provide sufficient thread engagement.

Large-Flange Support

The large flange distributes bearing loads over a wider area and helps reinforce the installation hole. 

Actual push-out and pull-out resistance depend on the workpiece and installed insert geometry.

High-Speed Assembly

The blind installation process can be performed using compatible hand tools, pneumatic or hydraulic equipment, 

and appropriately configured automated assembly systems.

Installation in Thin Materials

Selected versions are designed for materials starting from 0.5 mm in thickness. 

The correct grip range and setting conditions must be verified for each application.

Alternative to Welded and Clinch Nuts

Full-hex blind rivet nuts may be considered where welding, press-in installation, or backside access is impractical.

 Joint strength and clamping requirements must be evaluated before substitution.

Color Zinc-Plated Steel Construction

The steel body and zinc-plated finish provide a combination of mechanical functionality and surface corrosion protection for suitable industrial environments.

OEM Customization

JUXIN FASTENERS can review custom thread sizes, flange dimensions, body lengths, grip ranges, surface treatments, and drawing-specific fastening requirements.

Industrial Applications

These full-hex blind rivet nuts are suitable for engineering evaluation in:

• Automotive body and chassis-related mounting components

• Tubular steel structures and fabricated metal assemblies

• Hydroformed steel components

• Magnesium castings and aluminum extrusions

• Electrical cabinets, switchgear, and control panels

• Industrial machinery and equipment housings

• Telecommunications and data infrastructure enclosures

• Removable covers, brackets, mounting rails, and access panels

• Industrial transportation equipment

• OEM sheet-metal assemblies requiring single-sided installation

Engineering and Procurement Support

JUXIN FASTENERS supports OEM engineering teams, procurement managers, 

strategic sourcing professionals, and supplier development teams with product selection and drawing-based quotation review.

For new projects, please provide the required thread size, workpiece thickness, 

installation-hole dimensions, material specification, corrosion requirements, expected annual volume, and relevant technical drawings.

Our goal is to help customers resolve fastening and sourcing challenges while improving assembly reliability and reducing unnecessary engineering and procurement work.

Request a Quote or Technical Review

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

JUXIN FASTENERS — Engineering-Oriented Industrial Fastening and Custom Component Solutions.

Product Packaging – Flat Head Open-End Full-Hex Blind Rivet Nuts

Standard Packaging Configuration

JUXIN FASTENERS provides industrial packaging for steel full-hex blind rivet nuts to support bulk purchasing, transportation, warehousing, and OEM production requirements.

The standard packaging arrangement consists of plastic inner bags, outer cartons, and palletized packaging for larger shipments.

Packaging quantities and configurations can be adjusted according to product dimensions, total order quantity, customer purchasing requirements, and shipping conditions.

1. Inner Packaging — Plastic Bags

The inner packaging consists of plastic bags containing the specified quantity of blind rivet nuts.

Plastic bags help separate product sizes and reduce unnecessary handling during packaging and transportation.

Packaging arrangements may include:

• Separate packing for M4, M5, M6, M8, M10, and M12

• Defined quantity per plastic bag

• Individual part-number identification

• Product size and finish identification

• Batch or lot information when required

• Customer-specific packaging labels

The actual number of pieces per bag depends on the rivet nut dimensions, product weight, and agreed packaging specification.

2. Outer Packaging — Export Cartons

Plastic-bagged products are placed into outer cartons for industrial shipment and storage.

Standard Carton Dimensions

Carton selection depends on the product size, packaging quantity, and shipment requirements.

The final quantity per carton and gross weight are confirmed according to the actual purchase order.

Carton Label Information

Customer-specific carton labels may include:

• Product description

• Thread size

• Material and finish

• Customer part number

• JUXIN FASTENERS part identification

• Quantity per carton

• Batch or lot number

• Purchase order number

• Net weight

• Gross weight

• Shipping marks

Label formats and traceability requirements should be confirmed before production packaging.

3. Pallet Packaging

For larger industrial orders, cartons may be packed on pallets to support consolidated shipment and warehouse handling.

Supplied Pallet Dimensions: 215 × 100 × 90 cm

Pallet loading arrangements depend on the number of cartons, total shipment weight, and customer transportation requirements.

The final pallet configuration may specify:

• Cartons per pallet

• Total pieces per pallet

• Pallet gross weight

• Pallet dimensions

• Shipping identification

• Customer purchase order information

The pallet dimensions shown are the supplied packaging reference and may be adjusted according to the confirmed shipment plan.

4. OEM and Customized Packaging

JUXIN FASTENERS can review customized packaging requirements for industrial customers, including:

• Customer-defined quantities per bag

• Customer-defined quantities per carton

• OEM part-number labeling

• Barcode labels

• Batch and lot traceability

• Custom carton dimensions

• Customer-specific pallet arrangements

• Mixed-size order separation

• Warehouse receiving labels

• Distribution-center packaging requirements

• Special shipping marks

Customized packaging is subject to order confirmation and commercial agreement.

5. Packaging Protection for Color Zinc-Plated Steel

Color zinc-plated steel rivet nuts should be stored and transported under suitable dry conditions.

Recommended handling practices include:

• Avoiding prolonged exposure to moisture

• Keeping packages away from corrosive substances

• Preventing unnecessary surface abrasion

• Avoiding excessive carton loading

• Separating different thread sizes

• Maintaining product identification during warehouse handling

For long-distance transportation or special storage environments, additional protective packaging may be reviewed according to customer requirements.

6. Packaging Information for Purchase Orders

Customers are encouraged to specify the following information:

Final packaging quantities, carton weights, and pallet arrangements will be confirmed according to the approved purchase order.

Packaging and Bulk Order Inquiries

For OEM purchasing programs, industrial bulk orders, custom packaging, and shipping requirements, please contact JUXIN FASTENERS.

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

JUXIN FASTENERS — Industrial Fastening and Custom Component Solutions.