Inch Steel Half-Hex Blind Rivet Nuts – Open End

Steel Half-Hex Blind Rivet Nut Technical Specifications

Product Configuration

Metric Thread Reference

The thread values are nominal metric reference dimensions.

They do not define the insert's mounting hole dimensions or confirm available inch-thread equivalents.

Applicable Technical References

Relevant standards may include:

• ISO 261 – General-purpose metric screw thread plan

• ISO 724 – Basic dimensions of metric screw threads

• ISO 965 – Metric thread tolerances

• ASME B1.1 – Unified inch screw threads

• ISO 2081 – Electroplated zinc coatings on iron or steel

• ASTM B633 – Electrodeposited zinc coatings on iron and steel

Actual compliance with a particular standard must be confirmed against the ordered product specification.

Mounting Hole Requirements

The installation hole must match the specified partial-hex body geometry.

Required dimensions should be obtained from the approved technical drawing.

Hole dimensions should not be calculated solely from the nominal thread size.

Grip Range Selection

The documented family grip range is 0.5–4.0 mm.

Individual thread sizes may have different grip-range options.

The selected insert must be suitable for the actual host panel thickness and material properties.

Recommended OEM Qualification

Technical Drawings and CAD

Refer to the product PDF and CAD drawings for exact dimensions and installation requirements.

Catalog Reference: Pages 95–96.

For custom inch-thread requirements, provide the required Unified thread designation and customer drawing.

Contact: info@juxinfasteners.com

Why Choose Half-Hex Blind Rivet Nuts?

1. Improved Resistance to Insert Rotation

One of the main engineering challenges with blind rivet nuts is preventing the insert from turning inside the mounting hole.

When a screw is tightened or removed, torque is transmitted through the internal thread to the insert body.

If the insert rotates, the connection may become difficult to assemble or service.

The half-hex body provides a mechanical anti-rotation feature through engagement with a corresponding non-round mounting hole.

This is particularly useful for:

• Removable equipment covers

• Service access panels

• Industrial electrical enclosures

• Instrument mounting brackets

• Sheet metal housings

• Machinery maintenance points

Actual torque-out performance depends on the insert dimensions, host material, hole geometry, installation conditions and mating screw torque.

Engineering Insight: The half-hex design does not eliminate the need for torque validation. 

A poorly formed mounting hole or insufficient setting deformation can still cause the insert to rotate.

2. Reusable Threads in Thin Sheet Metal

Thin sheet metal may not provide sufficient thread engagement for direct tapping.

A blind rivet nut introduces a separate internally threaded component into the panel.

During installation, the deformable section of the insert collapses behind the host material and creates mechanical retention.

This provides a reusable threaded fastening point without requiring a welded nut.

The suitability of the connection depends on panel thickness, material properties, loading direction and installation quality.

3. Flat Flange for Panel Support

The flat head provides a bearing surface against the panel.

Compared with a reduced-head design, a larger flange may provide additional support around the mounting hole.

However, the flange remains above the panel surface unless the design includes an appropriate recess.

For flush-surface requirements, engineers should consider whether a countersunk rivet nut is more suitable.

4. Open-End Thread Configuration

The open-end body permits a mating screw to extend through the insert.

This can simplify screw-length selection where the assembly provides adequate clearance behind the panel.

Design engineers must verify:

• Required thread engagement

• Screw length

• Clearance behind the panel

• Adjacent components

• Installation access

• Joint clamping requirements

Open-end inserts do not provide a sealed rear thread cavity.

For environmental sealing or contamination protection, a closed-end rivet nut or qualified sealing arrangement may be more appropriate.

5. Zinc-Plated Steel for Industrial Assemblies

The color zinc finish provides sacrificial corrosion protection to the steel substrate.

Coating performance depends on plating thickness, conversion coating chemistry, passivation, handling and environmental exposure.

Where a formal coating specification is required, relevant references may include ASTM B633 or applicable ISO 2081 requirements, subject to agreement on the actual finish.

A colored zinc finish alone does not establish a specific corrosion-resistance rating.

Salt spray requirements, coating thickness and restricted-substance compliance must be separately defined and verified.

Industrial Applications

Electrical Cabinets and Control Panels

Half-hex blind rivet nuts can be used to create threaded mounting points in fabricated electrical enclosures.

Potential applications include:

• Control cabinet side panels

• Electrical enclosure covers

• Mounting rails

• Internal equipment brackets

• Switchgear support components

• Fan mounting brackets

• Service access panels

The half-hex design is useful where a mounting screw may be repeatedly removed during inspection or maintenance.

For protective electrical bonding, the assembled joint must be separately validated for electrical continuity and applicable equipment requirements.

Industrial Machinery and Automation

Industrial machinery frequently uses fabricated covers, brackets and removable protective panels.

Half-hex steel rivet nuts may be considered for threaded mounting points in these components where the joint load and installation geometry are suitable.

Typical examples include machine guards, equipment housings, access covers and light-duty support brackets.

For vibration-sensitive applications, the complete bolted joint must be assessed for loosening, fatigue and mechanical retention.

Automotive and Transportation Equipment

Potential applications include selected interior brackets, equipment housings, service panels and non-safety-critical sheet metal assemblies.

For automotive OEM projects, the insert should be qualified against the actual material, coating, installation process and mechanical performance requirements.

Safety-critical or highly loaded applications require application-specific engineering approval.

HVAC and Mechanical Equipment

Sheet metal equipment may require threaded connections for removable covers, fan assemblies and internal brackets.

Blind rivet nuts provide an alternative where rear access is restricted and welding is undesirable.

Metal Fabrication and Industrial Enclosures

Potential uses include:

• Sheet metal boxes

• Hollow metal sections

• Fabricated brackets

• Instrument enclosures

• Industrial equipment panels

• Removable maintenance covers

• Custom machinery components

The mounting hole must be manufactured to the specified partial-hex geometry.

Engineering Comparison: Half-Hex vs. Round-Body Rivet Nuts

A half-hex rivet nut may be preferred when resistance to insert rotation is a major design requirement.

However, it is not automatically stronger than every round-body rivet nut. Comparative performance should be established through testing.

Inch and Metric Thread Selection

Important Thread Compatibility Requirements

The product is identified as an inch-series half-hex rivet nut, but the documented size list contains metric thread designations.

Metric and Unified inch threads are not interchangeable.

A mating screw must match the internal thread system, nominal diameter, pitch and tolerance requirements.

For metric threads, relevant references include ISO 261, ISO 724 and ISO 965.

For Unified inch threads, ASME B1.1 provides relevant thread specifications.

Customers requesting inch-thread rivet nuts should provide the required Unified thread designation, such as UNC or UNF, together with the applicable engineering drawing.

JUXIN FASTENERS can review the requested configuration and confirm manufacturing or sourcing feasibility before quotation.

Installation Recommendations

How Do Half-Hex Blind Rivet Nuts Work?

The rivet nut is inserted into a correctly formed mounting hole.

A compatible installation tool engages with the internal thread and applies an axial setting force.

The deformable section of the insert collapses behind the panel, creating mechanical retention.

The partial-hex section engages with the mounting hole to resist rotation.

Recommended Installation Process

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

2. Prepare the specified half-hex mounting hole.

3. Inspect the hole dimensions and remove burrs.

4. Select a compatible rivet nut setting tool.

5. Engage the insert with the installation mandrel.

6. Position the insert perpendicular to the panel.

7. Apply the validated installation stroke or setting force.

8. Release the installation mandrel.

9. Inspect flange seating and thread condition.

10. Perform mechanical retention testing where required.

Incorrect setting conditions may result in loose inserts, damaged threads, panel deformation or reduced torque-out resistance.

Engineering Validation and Quality Requirements

For OEM programs, the following performance characteristics should be evaluated.

Spin-Out Torque

Measures the torque required to rotate the installed insert within the host material.

Axial Pull-Out Resistance

Evaluates the force required to extract the insert from the panel.

Push-Out Resistance

Evaluates resistance to displacement through the mounting hole.

Thread Integrity

Confirms that the internal thread remains usable after installation.

Installation Repeatability

Evaluates consistency across representative production samples.

Corrosion Resistance

Evaluates coating suitability for the intended environment where required.

Test methods, acceptance criteria and sampling requirements should be established according to the customer's application.

Custom Steel Half-Hex Rivet Nuts for OEM Projects

JUXIN FASTENERS supports technical review of custom blind rivet nut requirements.

Potential customization includes:

• Unified inch-thread configurations

• Metric thread configurations

• Special flange dimensions

• Modified half-hex body geometry

• Custom barrel lengths

• Alternative grip ranges

• Customer-specific zinc finishes

• Drawing-defined tolerances

• Special inspection requirements

• OEM packaging and labeling

Custom manufacturing feasibility, minimum order quantities, tooling requirements and production lead times are subject to review.

OEM Purchasing and Supplier Development

For procurement engineers, sourcing managers and supplier development teams, accurate rivet nut quotations depend on clearly defined technical requirements.

Please include:

• Part number or technical drawing

• Thread system and size

• Material specification

• Surface finish

• Host panel thickness

• Mounting hole dimensions

• Required mechanical performance

• Estimated order quantity

• Annual demand

• Delivery and packaging requirements

Providing these details allows JUXIN FASTENERS to evaluate the application and prepare a quotation based on the confirmed specification.

Request an OEM Quotation

JUXIN FASTENERS welcomes inquiries for steel half-hex blind rivet nuts, inch-thread requirements and custom threaded insert programs.

Send your drawings, technical specifications and expected purchasing quantities for review.

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

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

Product Packaging and Industrial Supply

Standard Packaging

Steel half-hex blind rivet nuts are packed in plastic inner bags and outer cartons, with palletized packaging where required.

Final packing quantities depend on product dimensions and customer order requirements.

Reference Packaging Dimensions

Dimensions are reference values and may be adjusted according to customer requirements.

OEM Packaging Options

• Industrial bulk packaging

• Customer-specific packing quantities

• Part-number labeling

• Batch identification

• Barcode labels

• Export cartons

• Palletized shipments

• Customer-specific shipping marks

For recurring OEM programs, packaging requirements and delivery schedules can be reviewed during quotation.

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

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