Flat Head Open-End Brass Half-Hex Blind Rivet Nuts

Brass Half-Hex Blind Rivet Nut Technical Specifications

Metric Thread Reference

Metric thread designations may be specified using ISO 261, ISO 724 and ISO 965, as applicable.

The values above describe nominal thread pitch. They do not establish the installation hole diameter, hexagonal profile or insert body dimensions.

Grip Range

The documented product family grip range is 0.5–4.0 mm.

The correct grip range must be selected according to the actual host panel thickness.

Grip range availability may vary by thread size and insert geometry.

Consult the approved product drawing for exact dimensional requirements.

Brass Material Requirements

Brass alloy selection should be confirmed against the customer specification.

Applicable material references may include relevant ASTM or EN copper-alloy standards, depending on the specified alloy and product form.

No specific brass alloy grade has been confirmed for this product.

For drawing-based procurement, the brass grade should be identified before final production approval.

Installation Hole Geometry

The half-hex insert must engage with a compatible non-round mounting hole.

The technical drawing should define:

• Hole profile

• Across-flats dimensions where applicable

• Round-section dimensions where applicable

• Hole tolerances

• Panel thickness

• Edge distance

• Flange seating requirements

• Burr limits

A circular installation hole should not be substituted without engineering approval.

Installation Procedure

1. Confirm the required thread size and grip range.

2. Check the brass insert against the approved drawing.

3. Prepare the specified half-hex mounting hole.

4. Inspect the hole dimensions and remove burrs.

5. Select a compatible rivet nut setting tool and mandrel.

6. Engage the insert with the setting mandrel.

7. Position the insert perpendicular to the host panel.

8. Apply the validated setting stroke or installation force.

9. Allow the deformable body section to expand behind the panel.

10. Release the setting mandrel.

11. Inspect flange seating and thread condition.

12. Verify mechanical retention where required.

Recommended Qualification Tests

Spin-Out Torque: Measures resistance to rotation within the mounting hole.

Axial Pull-Out: Evaluates resistance to extraction from the host material.

Push-Out: Evaluates resistance to displacement through the panel.

Thread Integrity: Confirms that the internal thread remains usable after setting.

Installation Consistency: Evaluates repeatability across representative production samples.

Test requirements and acceptance criteria should be defined according to the OEM application.

Engineering Selection Checklist

Technical Drawings and CAD

For detailed product dimensions, please refer to the approved PDF specification sheet and CAD drawing.

Catalog Reference: Pages 95–96.

Custom dimensions may be evaluated according to customer drawings.

For engineering review, contact info@juxinfasteners.com.

Why Choose Brass Half-Hex Rivet Nuts?

1. Mechanical Resistance to Rotation

Insert rotation is an important consideration when designing removable threaded connections in thin sheet materials.

A round-body rivet nut typically relies on friction and mechanical retention developed during setting.

A half-hex rivet nut incorporates a partially hexagonal body that engages with a corresponding non-round mounting hole.

This geometric engagement can improve resistance to rotation during screw tightening and removal.

The actual spin-out torque depends on:

• Insert material and geometry

• Host panel thickness

• Mounting hole dimensions and tolerances

• Panel material hardness

• Installation stroke or setting force

• Thread condition

• Mating screw torque

• Number of assembly cycles

Engineering Insight: A half-hex design should not be assumed to provide a specific torque-out rating without testing. Brass insert performance must be qualified using the intended host material and installation conditions.

2. Brass Material for Corrosion-Sensitive Assemblies

Brass offers useful corrosion resistance in many indoor and controlled industrial environments.

Unlike carbon steel, brass does not form conventional iron rust.

This can make natural-finish brass inserts an attractive option for selected electrical equipment, instrumentation and decorative hardware applications.

However, brass is not universally corrosion-resistant.

Its performance depends on alloy composition, environmental exposure and contact with dissimilar metals.

Certain brass alloys may be susceptible to dezincification or stress corrosion cracking in aggressive environments.

Where the assembly is exposed to moisture, chemicals or marine conditions, the actual brass alloy and service environment should be reviewed before material approval.

3. Natural Finish Without Zinc Plating

This product is supplied with a natural brass finish.

The absence of an additional zinc coating can simplify material and surface-finish requirements for certain applications.

However, natural brass may develop surface discoloration or tarnish over time.

For applications requiring a controlled decorative appearance, surface condition and acceptance criteria should be defined in the purchasing specification.

4. Open-End Thread Configuration

The open-end design allows the mating screw to pass through the insert where sufficient clearance is available.

This can provide flexibility in assemblies with different screw lengths or component stack-ups.

Design engineers should verify:

• Required thread engagement

• Screw length

• Available backside clearance

• Potential interference with adjacent components

• Tightening torque

• Expected service cycles

An open-end rivet nut does not provide a sealed rear cavity.

Where contamination control or environmental sealing is required, a closed-end insert or a separately qualified sealing solution should be considered.

5. Flat Flange for Panel Support

The flat head provides a bearing surface against the host panel.

This helps distribute load around the mounting hole and can improve resistance to local deformation under suitable installation conditions.

The flange dimensions should be selected according to panel thickness, material strength, available installation space and joint loading.

Industrial Applications

Electrical Cabinets and Control Equipment

Brass half-hex blind rivet nuts may be considered for threaded fastening points in electrical cabinets, instrumentation enclosures and control equipment.

Potential applications include:

• Removable access panels

• Instrument mounting brackets

• Internal equipment supports

• Control enclosure components

• Electrical equipment housings

• Serviceable mounting points

Brass is electrically conductive, but this does not automatically qualify an installed rivet nut as a protective grounding or bonding connection.

Electrical continuity, contact resistance and applicable equipment requirements must be validated separately.

Electronic and Instrumentation Equipment

Instrumentation housings and electronic equipment assemblies may require reusable threaded connections in relatively thin panels.

Natural brass inserts can provide a non-ferrous fastening option where the material properties and mounting geometry are appropriate.

For sensitive electronic equipment, galvanic compatibility and electrical isolation requirements should be reviewed.

Industrial Machinery and Automation

Machinery covers, equipment brackets and removable service panels frequently require fastening points that can be accessed from one side.

The half-hex body helps resist rotation during maintenance.

Brass should be selected only where its mechanical strength and fatigue performance meet the application requirements.

Furniture, Fixtures and Decorative Hardware

Natural-finish brass rivet nuts may be suitable for selected metal furniture, fixtures and decorative hardware where appearance and reusable threaded fastening are important.

The final appearance depends on surface preparation, handling and service conditions.

Sheet Metal Fabrication

Potential applications include:

• Thin metal panels

• Fabricated enclosures

• Hollow metal profiles

• Instrument housings

• Removable brackets

• Light-duty equipment structures

• Custom industrial assemblies

The mounting hole geometry must match the half-hex insert design.

Brass vs. Steel Half-Hex Rivet Nuts

Material selection should be based on the actual joint requirements rather than appearance alone.

Neither material should be considered universally superior.

For high-load or vibration-sensitive joints, mechanical qualification is necessary.

Custom Brass Blind Rivet Nuts for OEM Programs

JUXIN FASTENERS supports engineering review of custom threaded insert requirements.

Potential customization options include:

• Special metric thread sizes

• Unified inch threads

• Modified flange diameters

• Alternative half-hex body dimensions

• Custom barrel lengths

• Special grip ranges

• Customer-defined brass alloys

• Alternative surface finishes

• Drawing-specific tolerances

• Custom inspection requirements

• OEM packaging and labeling

Manufacturing feasibility, tooling requirements, minimum order quantities and lead times are subject to technical review.

OEM Sourcing and Supplier Qualification

For procurement engineers, sourcing managers and supplier development teams, rivet nut selection should include more than nominal thread size.

Important purchasing requirements include:

• Approved part drawing

• Brass alloy specification

• Thread size and tolerance

• Mounting hole dimensions

• Grip range

• Mechanical performance requirements

• Surface condition

• Inspection requirements

• Annual demand

• Packaging and traceability requirements

Providing these details helps reduce specification ambiguity and supports more accurate quotations.

Request a Quotation

JUXIN FASTENERS welcomes RFQs for standard and custom brass blind rivet nuts used in OEM equipment and industrial assemblies.

Please provide your technical drawing, required thread size, panel thickness, mounting hole geometry, estimated order quantity and annual demand.

Our team can review the requirements and prepare a quotation based on the confirmed product specification.

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

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

Product Packaging and OEM Logistics

Standard Packaging

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

Packaging quantities depend on product dimensions, order quantity and customer requirements.

Reference Packaging Dimensions

All dimensions are reference values. Final packaging is confirmed according to the order.

Customized OEM Packaging

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

• Bulk industrial packaging

• Custom packing quantities

• Customer part-number labels

• Batch identification

• Barcode labels

• Protective packaging

• Export cartons

• Palletized shipments

• Customer-specific shipping marks

For recurring OEM orders, customers may provide annual forecasts, delivery schedules and packaging specifications.

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

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