Stainless Steel Countersunk Head Open-End Plain Body Blind Rivet Nuts

Stainless Steel Countersunk Head Open-End Plain Body Blind Rivet Nuts – Technical Specifications

JUXIN FASTENERS supplies stainless steel countersunk head open-end plain body blind rivet nuts for industrial OEM manufacturers, sheet-metal fabricators, mechanical design engineers, and international fastener procurement teams.

These threaded inserts provide mechanically retained internal threads in thin panels, hollow sections, and fabricated assemblies where access is available from only one side.

The combination of a full countersunk flange, smooth round body, and open-end configuration makes this design relevant to applications requiring flush mounting, conventional round-hole preparation, and removable threaded connections.

Product Specifications

The published grip range represents the product family. Exact dimensions, individual grip limits, mounting-hole requirements, and installation conditions must be confirmed for the selected size.

Engineering Features and Selection Considerations

1. Full Countersunk Head for Flush Mounting

The full countersunk flange is designed to sit within a matching countersink in the parent material.

When the insert head and prepared mounting-hole geometry are compatible, the installed flange can sit approximately flush with the surrounding panel surface.

This configuration may be useful for overlapping sheet-metal components, close-fitting covers, equipment housings, and mounting brackets where a protruding flange would interfere with assembly.

However, flushness depends on the actual flange geometry, countersink dimensions, parent-material thickness, and installation conditions.

Engineers should specify the required installed flange height or flushness tolerance where surface clearance is critical.

2. Plain Round Body for Conventional Round Holes

The plain body has a smooth cylindrical exterior rather than an intentionally knurled or ribbed surface.

This distinction is important when selecting an insert for a particular mounting-hole design.

A smooth round body can simplify the external geometry of the insert and allows installation in a compatible circular hole.

However, it should not be assumed to provide the same rotational engagement as a knurled or hex body configuration.

Actual resistance to insert rotation depends on mechanical deformation, hole tolerance, parent-material properties, grip thickness, and installation conditions.

For applications involving frequent screw removal or elevated tightening torque, validated spin-out torque should be considered during selection.

3. Countersink Geometry and Remaining Panel Thickness

A countersunk rivet nut requires a properly prepared recess to accommodate the flange.

Countersinking removes material around the mounting hole.

In relatively thin panels, excessive countersink depth may reduce the remaining material available to support the insert.

Design engineers should evaluate the relationship between flange thickness, countersink depth, through-hole diameter, and remaining panel thickness.

Important dimensions include:

• Through-hole diameter and tolerance

• Countersink angle

• Countersink major diameter

• Countersink depth

• Original panel thickness

• Remaining material thickness

• Required installed flange position

The countersink angle and dimensions must match the approved insert drawing.

Do not assume that every countersunk rivet nut uses the same head angle or mounting-hole geometry.

4. Open-End Configuration and Screw Clearance

The open-end configuration allows a mating screw or bolt to extend through the threaded insert where sufficient backside clearance is available.

This can provide screw-length flexibility in comparison with closed-end rivet nuts.

However, engineers must confirm that the screw does not interfere with wiring, internal equipment, moving components, or nearby structures.

Screw length, thread engagement, panel stack-up, and backside clearance should be evaluated together.

Where screw penetration must be restricted or contamination entry through the insert barrel is a concern, a closed-end rivet nut may be considered instead.

5. Stainless Steel Material Selection

Stainless steel rivet nuts may offer corrosion-resistance advantages for selected industrial applications.

The supplied technical reference mentions A2 stainless steel, but the confirmed product-family information does not establish the exact grade for every available size.

The required stainless steel grade should therefore be specified and confirmed during technical review.

For corrosive environments, engineers should consider moisture, cleaning chemicals, chloride exposure, dissimilar-metal contact, and service temperature.

Material documentation and traceability requirements should be included in the RFQ where necessary.

6. Grip Range and Installation Thickness

This product family is identified with a grip range of 1.5–5.0 mm, depending on the selected thread size and insert configuration.

Grip range refers to the material thickness that the selected rivet nut is designed to accommodate under its specified installation conditions.

For countersunk installations, engineers must also consider the effect of countersink preparation on local panel geometry.

The published family range should not be used as a substitute for individual part drawings.

Installation trials may be necessary where panel thickness, material hardness, or joint geometry differs from standard conditions.

7. One-Sided Installation and Process Control

Blind rivet nuts can be installed without accessing the back of the workpiece.

This makes them useful in hollow sections, enclosed fabrications, tubular structures, and assembled sheet-metal components.

Depending on the specific insert and production process, installation may use compatible manual, pneumatic, or cordless rivet nut tools.

The installation process must produce sufficient mechanical retention without damaging the internal threads or deforming the parent panel beyond acceptable limits.

Setting stroke or force, hole preparation, and tooling compatibility should be established before production.

For OEM assembly lines, representative installation testing can help verify repeatability.

Plain Body vs. Knurled Body vs. Hex Body Rivet Nuts

Plain body rivet nuts have a smooth cylindrical exterior and are installed in compatible round holes.

Knurled body rivet nuts incorporate external ribs or knurling intended to increase rotational engagement with the parent material.

Hex body rivet nuts use a non-round exterior and require a compatible non-round mounting hole.

These configurations should not be treated as direct substitutes based only on thread size.

Differences in hole geometry, installation behavior, rotational resistance, and available tooling may affect assembly compatibility.

For supplier changes or design substitutions, engineers should compare the complete product drawing and required installation performance.

Countersunk Head vs. Thin Head Rivet Nuts

Countersunk head rivet nuts are intended for installation in a prepared recess where a flush mounting surface is required.

Thin head rivet nuts use a reduced-height flange to limit surface projection, but the flange may remain above the panel.

A countersunk design may require additional hole preparation and may reduce the remaining panel material around the installation hole.

A thin head design may be preferable when countersinking is impractical or when the parent material cannot accommodate the required recess.

The selection should be based on actual panel geometry, load requirements, and surface-clearance conditions.

Industrial Applications and OEM Fastening Solutions

Automotive and Transportation

Plain body countersunk blind rivet nuts may be considered for fabricated housings, interior brackets, equipment panels, and serviceable sheet-metal components.

Flush mounting can help reduce interference between overlapping parts.

For transportation applications, vibration, corrosion exposure, and insert retention requirements should be evaluated.

Electrical and Electronic Equipment

Potential applications include electrical cabinets, instrument enclosures, electronic equipment panels, and removable access covers.

The countersunk flange can help maintain a relatively smooth panel surface where adjacent components require clearance.

Because the insert has an open end, backside screw penetration and internal electrical clearances must be considered.

Industrial Machinery

These inserts may provide reusable internal threads for equipment guards, maintenance covers, mounting brackets, and fabricated machine housings.

Where repeated assembly and disassembly is expected, engineers should assess thread durability and resistance to insert rotation.

HVAC and Appliance Manufacturing

Applications may include sheet-metal cabinets, appliance housings, equipment covers, and brackets where flange projection is limited.

Panel thickness, mounting-hole preparation, and assembly clearance should be verified before selection.

Railway and Transportation Equipment

Potential uses include non-safety-critical interior equipment panels, fabricated enclosures, and serviceable mounting components.

Application-specific vibration, mechanical load, material, and documentation requirements must be confirmed before use.

General Sheet-Metal Fabrication

Countersunk plain body rivet nuts may be considered for fabricated panels, hollow sections, and assemblies where rear access is restricted.

They provide an alternative to conventional nuts where blind-side installation is necessary.

Engineering Selection Checklist

Before approving a countersunk plain body blind rivet nut, confirm:

• Required metric thread size

• Stainless steel grade

• Parent material and panel thickness

• Grip range for the selected size

• Through-hole diameter and tolerance

• Countersink angle and major diameter

• Countersink depth and remaining panel thickness

• Flange diameter and installed flange height

• Body diameter and overall length

• Screw length and thread engagement

• Available backside clearance

• Installation tooling and setting parameters

• Required spin-out, push-out, and pull-out performance

• Corrosion exposure and documentation requirements

Engineering Standards and Technical Verification

Product selection should be based on the approved dimensional drawing and application-specific engineering requirements.

Metric internal threads may be specified using applicable ISO metric thread standards.

Where UNC or UNF threads are requested, the corresponding ASME/ANSI thread requirements must be identified separately.

Metric and UNC/UNF thread systems are not directly interchangeable.

Inch dimensions shown as metric conversions are reference values only and do not establish availability of inch-threaded products.

Applicable ISO, DIN, EN, ASTM, SAE, or ASME standards and test methods should be identified only where they are relevant to the actual product, material, thread, or inspection requirement.

No specific certification or conformity should be assumed without supporting documentation.

OEM Procurement and Supply Chain Considerations

For procurement managers and supplier development teams, a countersunk rivet nut should not be evaluated using thread size alone.

Products with the same nominal thread may differ in flange angle, flange diameter, body dimensions, grip range, and mounting-hole requirements.

A smooth body insert should also not be assumed to provide the same rotational performance as a knurled body alternative.

Before approving a replacement supplier, procurement teams should verify critical dimensions, material grade, installation compatibility, and application-specific performance requirements.

For recurring OEM production, inspection criteria, traceability, packaging specifications, delivery schedules, and annual demand should be reviewed during sourcing.

Custom OEM Rivet Nut RFQ Requirements

Please provide:

• 2D drawing or 3D CAD model

• Required thread size and order quantity

• Stainless steel grade

• Head and body dimensions

• Countersink angle, diameter, and depth

• Mounting-hole diameter and tolerance

• Parent material and panel thickness

• Grip range and required installed flushness

• Screw length and backside clearance

• Installation method and performance requirements

• Inspection and traceability requirements

• Prototype or production quantities

• Estimated annual demand and delivery destination

JUXIN FASTENERS supports drawing-based technical reviews and OEM sourcing discussions for industrial blind rivet nuts and custom threaded fastening components.

Final dimensions, material availability, manufacturing requirements, and inspection criteria should be confirmed before production approval.

Related Fastening Solutions

Countersunk Head Knurled Blind Rivet Nuts

An alternative where a countersunk flange and external body knurling are required for the selected assembly.

Thin Head Open-End Knurled Blind Rivet Nuts

Suitable for applications requiring reduced flange projection without full countersink preparation.

Thin Head Closed-End Knurled Blind Rivet Nuts

An alternative when reduced flange height and prevention of screw penetration through the insert barrel are important.

Hex Body Blind Rivet Nuts

A potential solution for compatible non-round mounting holes where rotational resistance is a key design requirement.

Request an OEM Quotation

For stainless steel countersunk head open-end plain body blind rivet nuts, custom threaded inserts, or drawing-specific OEM fastening solutions,

 contact JUXIN FASTENERS with your engineering drawings and purchasing requirements.

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

JUXIN FASTENERS – Industrial Blind Rivet Nuts and Custom OEM Fastening Solutions.

Packaging and Delivery – Stainless Steel Countersunk Plain Body Blind Rivet Nuts

JUXIN FASTENERS reviews packaging arrangements according to product dimensions, order quantity, handling conditions, and OEM purchasing requirements.

Packaging Requirements

• Packaging quantity: Subject to order confirmation

• Inner packaging: According to approved packing instructions

• Outer packaging: According to shipment requirements

• Product identification: Part number, thread size, and material information as required

• Batch identification: According to agreed traceability requirements

• Custom packaging: Subject to technical and commercial confirmation

Packaging Protection

Countersunk plain body blind rivet nuts should be protected from unnecessary mechanical damage, thread contamination, and flange deformation during handling, storage, and transportation.

Packaging arrangements should consider product quantity, handling methods, and shipment conditions.

OEM Supply and Documentation

For recurring production programs, packaging quantities, labeling, material documentation, inspection records, and delivery requirements should be agreed upon before shipment.

Final packaging specifications are confirmed according to the approved purchase order.

For OEM packaging requirements and quotations, contact info@juxinfasteners.com.

Website: www.juxinfasteners.com