Thin Head Open-End Knurled Steel Blind Rivet Nuts

Technical Specifications — Thin Head Open-End Knurled Steel Rivet Nuts

Product Specifications

Metric Thread Dimensions

The following thread designations represent ISO metric coarse threads.

Applicable thread references include ISO 261, ISO 724, and ISO 965.

Individual product dimensions and thread tolerances must be confirmed from the approved drawing.

Unified Inch Thread Options — US OEM Sourcing Reference

The following Unified inch thread designations are relevant to US industrial procurement inquiries.

They are not confirmed standard sizes for this exact product configuration.

Unified threads should be specified according to ASME B1.1.

Metric and Unified threads are not interchangeable.

Grip Range — Metric and Inch Reference

The published product-series grip range is 0.5–6.0 mm.

These values are dimensional references and do not represent confirmed grip intervals for each thread size.

The appropriate grip range must be selected according to the specific rivet nut drawing and mounting material.

Technical Drawing and CAD Reference

Detailed dimensional information is referenced in the existing product specification PDF, pages 93–94.

Please consult the applicable PDF and CAD drawing for:

• Mounting hole diameter

• Head diameter

• Head height

• Body diameter

• Body length

• Knurl geometry

• Thread depth

• Individual grip ranges

• Installation dimensions

Custom dimensions can be reviewed according to customer drawings.

Engineering Selection Guide

1. Thin Head Versus Large Flange

Thin head rivet nuts and large flange rivet nuts solve different installation problems.

A thin head design reduces flange protrusion and may provide improved clearance beneath mating components.

A large flange distributes load over a wider bearing area and may be preferable for softer mounting materials or applications requiring additional bearing support.

Engineers should evaluate head diameter, head height, panel deformation, pull-through resistance, and assembly clearance.

2. Knurled Versus Smooth Body

Knurled rivet nuts provide exterior features intended to improve engagement with the mounting hole.

Smooth-body rivet nuts may be appropriate where different installation or material conditions apply.

The knurled design should not automatically be assumed to provide superior performance in every mounting material.

Testing should confirm spin-out torque and pull-out resistance under actual installation conditions.

3. Mounting Hole Geometry

Mounting hole geometry is a critical factor in blind rivet nut performance.

An oversized hole can reduce mechanical engagement and increase the risk of insert rotation.

An undersized hole can increase installation force, damage coatings, or deform the mounting panel.

Hole dimensions should follow the approved drawing.

The mounting hole must also be inspected for burrs, deformation, and dimensional consistency.

4. Panel Thickness and Grip Range

Grip range refers to the mounting material thickness accommodated by a particular rivet nut configuration.

A product-series grip range does not mean every size can be installed in every panel thickness within that range.

The individual part drawing should determine the appropriate grip selection.

For multi-layer assemblies, engineers should evaluate the total clamped material thickness and the resulting backside deformation.

5. Installation in Coated or Painted Panels

Blind rivet nuts may be installed into certain pre-coated or painted panels, but coating damage cannot be ruled out.

Installation may disturb the coating around the mounting hole, flange contact area, or backside deformation zone.

For corrosion-sensitive applications, coating condition should be evaluated after installation.

6. Corrosion Protection

Color zinc plating provides a protective coating for carbon steel fasteners.

The term "color zinc" does not establish a specific corrosion resistance level.

OEM specifications should define coating thickness, passivation type, restricted-substance requirements, and corrosion test acceptance criteria.

ASTM B633 and applicable ISO coating specifications may be considered according to the actual plating system.

Corrosion resistance must be verified against the required service environment.

7. Screw Engagement and Backside Clearance

The open-end configuration allows a mating screw to extend beyond the insert.

Engineers should confirm:

• Required thread engagement

• Screw length

• Backside clearance

• Adjacent component interference

• Thread fit

• Installation and service loads

Open-end rivet nuts should not be treated as environmental sealing components.

8. Installation Procedure

1. Review the approved rivet nut drawing.

2. Verify panel thickness and grip range.

3. Prepare the specified mounting hole.

4. Remove excessive burrs and inspect the hole.

5. Select the correct installation mandrel.

6. Thread the rivet nut onto the installation tool.

7. Insert the rivet nut into the mounting hole.

8. Seat the thin flange against the panel.

9. Keep the installation tool perpendicular to the workpiece.

10. Apply the approved setting stroke or force.

11. Release the tool and inspect the installed insert.

12. Verify thread integrity and mechanical retention.

Manual, pneumatic, hydraulic, or automated equipment may be used where compatible with the selected rivet nut.

9. OEM Performance Validation

Recommended application-specific evaluations may include:

• Mounting hole inspection

• Installation stroke verification

• Head seating

• Backside deformation

• Spin-out torque

• Axial pull-out resistance

• Push-out resistance where relevant

• Thread integrity

• Repeated screw assembly

• Vibration performance

• Coating condition after installation

• Corrosion performance

Acceptance criteria must be established according to the OEM application.

Common Engineering Questions

Can a thin head rivet nut replace a large flange rivet nut?

Not automatically. The thinner head may reduce protrusion but also changes the bearing geometry. Pull-through resistance, panel deformation, and assembly clearance must be evaluated.

Are knurled rivet nuts suitable for aluminum panels?

They may be suitable, depending on hole dimensions, panel thickness, material properties, and installation conditions. 

Testing is recommended to evaluate panel deformation, spin-out resistance, and galvanic corrosion considerations.

Can open-end rivet nuts be used in sealed enclosures?

They can be part of an enclosure assembly, but the open barrel does not provide a sealed rear barrier.

 Environmental sealing must be achieved and verified by the overall assembly design.

Can the same rivet nut be used in steel and plastic panels?

Not without verification. The mounting material affects knurl engagement, installation deformation, pull-out resistance, and long-term joint behavior.

Can JUXIN FASTENERS review custom thread sizes?

Yes. Customers may submit metric or Unified inch thread requirements, drawings, grip ranges, 

and installation specifications for technical review. Availability and manufacturing feasibility are confirmed during quotation.

Why Choose a Thin Head Rivet Nut Instead of a Large Flange Rivet Nut?

Head geometry affects the installed assembly.

A thin head rivet nut is useful when designers need to minimize the height of the installed flange or reduce interference with adjacent components.

Typical design considerations include:

• Limited clearance beneath mating components

• Compact sheet metal assemblies

• Removable covers and access panels

• Equipment housings with restricted assembly space

• Applications requiring reduced flange protrusion

However, a thin head provides a smaller bearing surface than many large-flange alternatives.

Where the panel is soft, thin, oversized, or subject to substantial axial loading, a large-flange rivet nut may offer a more suitable bearing arrangement.

Head style should therefore be selected according to the mounting material, loading conditions, and installation geometry rather than appearance alone.

Knurled Body for Rotational Retention

The knurled exterior is designed to engage the mounting material during installation.

This mechanical engagement can help resist rotation when a mating screw is tightened or removed.

Actual spin-out resistance depends on:

• Knurl geometry

• Mounting hole diameter and tolerance

• Panel thickness

• Panel material and hardness

• Installation stroke or force

• Coating condition

• Screw assembly torque

For OEM applications, the installed rivet nut should be tested under representative assembly conditions.

Open-End Design and Screw Engagement

The open-end barrel allows the mating screw to extend through the insert, provided sufficient backside clearance is available.

This can be useful when screw length or engagement requirements cannot be accommodated by a closed-end configuration.

However, the open-end construction does not provide a sealed rear barrier.

Where moisture, dust, oil, or other contaminants must be excluded, engineers should evaluate closed-end inserts or an independently validated sealing system.

Industrial Applications

Automotive and Transportation Equipment

Low-profile knurled rivet nuts can be considered for fabricated brackets, removable panels, interior equipment housings, and non-critical sheet metal assemblies.

The reduced head profile may be useful where mating components have limited clearance.

Electrical and Electronic Equipment

Potential applications include control cabinets, electrical enclosures, equipment mounting panels, and removable covers.

The open-end design must be assessed where internal components require protection from contamination or accidental screw intrusion.

HVAC and Refrigeration Equipment

Thin head blind rivet nuts may be used in fabricated housings, ventilation equipment, mounting brackets, and access panels.

Engineers should evaluate vibration, coating durability, and service conditions.

Industrial Machinery

Suitable candidate applications include machine guards, equipment covers, service panels, and fabricated structural housings where blind threaded installation is required.

Furniture, Fixtures, and Metal Fabrication

These inserts may be considered for metal furniture frames, display fixtures, shelving components, and fabricated tubular sections requiring removable threaded connections.

Rail and Commercial Vehicle Interiors

Low-profile blind threaded inserts may be evaluated for selected non-structural interior panels, mounting brackets, and equipment covers, subject to project-specific technical approval.

OEM Engineering and Sourcing Support

JUXIN FASTENERS supports industrial sourcing inquiries for low-profile knurled steel rivet nuts and drawing-based custom threaded insert requirements.

Engineering teams can provide head dimensions, mounting hole requirements, grip range, thread size, and installation performance criteria.

Procurement managers, strategic sourcing teams, and supplier development professionals can submit approved drawings, sample quantities, 

annual forecasts, inspection requirements, and packaging specifications.

Request a Quotation

For metric low-profile knurled steel rivet nuts, Unified inch thread inquiries, or custom OEM blind threaded inserts, contact:

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

Contact: https://www.juxinfasteners.com/contact-us/

Please provide your technical drawing, required thread size, panel thickness, mounting hole dimensions, finish requirements, and purchasing quantities for review and quotation.

Industrial Export Packaging — Low-Profile Knurled Steel Rivet Nuts

Standard Packaging

JUXIN FASTENERS provides export packaging for thin head open-end knurled steel blind rivet nuts to support product protection,

 handling, storage, and international transportation.

The standard packaging arrangement includes inner plastic bags, outer cartons, and palletized shipment where required.

Reference Packaging Dimensions

Actual packaging dimensions, quantities per carton, and pallet configurations are confirmed according to the product size and purchase order requirements.

Product Protection

Packaging arrangements may include:

• Protective plastic inner bags

• Reinforced export cartons

• Moisture-resistant protection where required

• Product identification labels

• Part number and thread size marking

• Batch identification

• Quantity labels

• Palletized shipment where required

For plated carbon steel rivet nuts, packaging should minimize moisture exposure and avoid unnecessary damage to the plated surfaces during handling and transportation.

Customized OEM Packaging

Customer-specific packaging requirements can be reviewed, including:

• Private labeling

• Customer part numbers

• Customized barcode labels

• Specified carton dimensions

• Customer-defined packing quantities

• Special pallet arrangements

• Customer-specific identification and traceability requirements

Customized packaging may involve additional costs or lead times.

Industrial Bulk Purchasing

JUXIN FASTENERS supports OEM sourcing inquiries for low-profile knurled blind rivet nuts, including metric and drawing-based custom configurations.

For quotation, please provide the required product drawing, material and finish specifications, purchase quantities, annual demand forecast,

 inspection requirements, and delivery expectations.

Sample availability, minimum order quantity, pricing, lead time, and packaging arrangements are confirmed during quotation review.

Request a Quotation

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

Contact: https://www.juxinfasteners.com/contact-us/