Flat Head Open-End Full-Hex Blind Rivet Nuts – Type B

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

1. Product Specification Table

The product introduction lists M3–M12, while the original detailed technical specifications identify M5–M12. M3 and M4 dimensional availability should be confirmed before quotation.

2. Metric Thread Specifications

These pitches are ISO metric coarse-thread references, not independently verified measurements of each supplied insert.

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

3. High-Strength Hexagonal Threaded Insert Design

The full-hexagonal blind threaded insert is designed to provide high resistance to insert rotation and dependable internal threads in thin-walled industrial components.

Its hexagonal body engages with a matching hexagonal hole, creating mechanical resistance against rotational movement.

The large flange provides a wider contact area against the mounting surface.

Together, these features make full-hex rivet nuts useful in applications requiring relatively high torque-to-turn resistance and stable threaded fastening.

High Clamp-Force Applications

The original high-strength hexagonal design is described as providing clamping performance comparable to certain welded-nut and self-clinching-nut applications.

However, actual clamp-force capability depends on the complete joint design, including:

• Insert thread size and strength

• Bolt property class

• Workpiece thickness and strength

• Installation-hole geometry

• Setting stroke and deformation

• Flange bearing area

• Bolt tightening conditions

• Applied service loads

Comparison with welded or clinched connections must therefore be established through application-specific testing.

4. Fast Facts and Performance Features

Exceptional Torque Capability

The full-hex body offers positive mechanical anti-rotation engagement with a properly formed hexagonal hole.

This can provide greater resistance to insert rotation than a comparable round-body insert under suitable installation conditions.

High-Speed Assembly

The inserts can be installed using compatible manual, pneumatic, hydraulic, and automated equipment.

High-Strength Threads in Thin Materials

Selected product configurations are intended for material thicknesses beginning at 0.5 mm.

The approved grip range must be confirmed for the specific size and installation material.

Improved Thread Strength

The steel insert provides internal thread engagement where the receiving material alone may not provide sufficient thread depth.

Overtightening Protection Considerations

The original high-strength design description emphasizes reducing overtightening-related problems, including thread stripping and costly rework.

It also describes a possible failure sequence in which the mating screw shank fails before the installed insert.

This behavior is not universal and depends on the relative strengths of the bolt, insert, and supporting material.

Engineering validation is required before treating bolt failure as a protective design mechanism.

Industrial Material Compatibility

Typical candidate applications include:

• Tubular steel

• Hydroformed components

• Magnesium castings

• Aluminum extrusions

• Fabricated sheet-metal assemblies

The installation process must be evaluated against the actual material strength and deformation characteristics.

5. Full-Hexagonal Anti-Rotation Design

Mechanical Engagement

The full hexagonal body fits into a matching hexagonal mounting hole.

Unlike a round-body insert that may rely primarily on friction or surface knurling, the hexagonal geometry provides mechanical resistance to rotation.

Torque-to-Turn Performance

Torque-to-turn resistance is affected by:

• Hexagonal across-flats dimensions

• Installation-hole tolerances

• Body engagement length

• Panel material

• Panel thickness

• Setting force

• Installed insert deformation

• Bolt tightening conditions

A correctly installed hexagonal insert may offer improved torque-to-turn resistance compared with a round-body design.

However, no fixed percentage improvement should be assumed without comparative test data.

Repeated Assembly and Servicing

The anti-rotation design is particularly relevant where threaded fasteners must be removed and reinstalled for inspection, repair, or maintenance.

6. Large-Flange Head Design

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

Potential engineering benefits include:

• Improved distribution of local bearing loads

• Support around the installation opening

• Reduced risk of local flange pull-through under suitable conditions

• More stable flange seating

• Improved suitability for selected load-bearing threaded joints

The flange does not independently guarantee high pull-out strength.

Actual performance must be evaluated against panel thickness, material properties, and the installed insert geometry.

7. Surface Finish and Corrosion Protection

Standard Finish

Color Zinc-Plated Steel

The standard product is supplied with a color zinc-plated finish.

Zinc plating provides sacrificial corrosion protection for the steel substrate.

The level of protection depends on coating thickness, passivation, environmental exposure, and handling conditions.

ASTM B117 Salt Spray Requirement

The original detailed specification describes a zinc-plated and clear-passivated configuration intended to achieve 240 hours of resistance to red corrosion under ASTM B117 testing.

ASTM B117 defines the salt-spray exposure test method.

A 240-hour red-rust requirement should be treated as a specified coating-performance target until the actual finish configuration and supporting test results have been confirmed.

The standard Color Zinc finish and the clear-passivated configuration should not be assumed to have identical corrosion performance.

Hexavalent Chromium-Free Finish

The original specification also identifies a hexavalent chromium-free finish requirement.

Where required, customers should specify the appropriate passivation chemistry and request applicable coating or regulatory compliance documentation.

Additional Surface Finish Options

Alternative surface treatments may be reviewed according to customer drawings and project requirements.

8. Hexagonal Hole Production

The full-hexagonal body requires a corresponding hexagonal installation hole.

Correct hole geometry is essential to achieving the intended anti-rotation performance.

Manufacturing Methods

Hexagonal holes may be produced using appropriate:

• Punching operations

• Broaching processes

• CNC machining

• Dedicated hexagonal hole-forming tools

Round-Hole-to-Hexagonal-Hole Conversion

The original technical information describes a dedicated hole-forming tool that allows a prepared round hole to be converted into a hexagonal opening.

The general process includes:

1. Prepare the required round pilot hole.

2. Position the compatible hexagonal hole-forming tool.

3. Form the hexagonal hole according to the tool instructions.

4. Inspect the final hole dimensions.

5. Insert the full-hex blind rivet nut.

6. Complete the setting operation using a compatible rivet nut installation tool.

This process may be useful where only one side of the workpiece is accessible.

The hole-forming equipment and its compatibility must be confirmed separately for the application.

Critical Installation-Hole Parameters

Engineers should verify:

• Hexagonal across-flats dimension

• Hole tolerance

• Panel thickness

• Edge distance

• Burr condition

• Surface coating

• Workpiece hardness

• Hole alignment

9. Installation Equipment and Assembly

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

• Manual hand-setting tools

• Pneumatic installation tools

• Hydraulic setting equipment

• Multi-head installation systems

• Automated and robotic assembly equipment

Equipment selection depends on thread size, insert design, production volume, and required setting force.

Recommended Installation Procedure

Step 1 — Confirm Product Dimensions

Check the thread size, body dimensions, and grip range against the approved drawing.

Step 2 — Inspect the Installation Hole

Confirm that the hexagonal hole matches the required geometry.

Step 3 — Select the Installation Tool

Use a compatible threaded mandrel and appropriate setting equipment.

Step 4 — Position the Insert

Place the full-hex body into the installation hole with the flange seated against the workpiece.

Step 5 — Set the Rivet Nut

Apply the specified setting stroke or force.

The deformable section of the rivet nut collapses behind the workpiece to create mechanical retention.

Step 6 — Inspect the Installation

Check flange seating, backside deformation, alignment, and thread condition.

Step 7 — Validate Performance

Where required, conduct torque-to-turn, pull-out, push-out, and application-specific joint testing.

10. Full-Hex Rivet Nuts vs. Other Threaded Fastening Methods

Full-Hex vs. Round-Body Rivet Nuts

Full-hex inserts provide mechanical anti-rotation engagement with matching hexagonal holes.

Round-body rivet nuts may be easier to install where only round-hole production is available.

Full-Hex vs. Weld Nuts

Full-hex blind rivet nuts can provide threaded fastening without welding heat input.

They may be suitable for selected hollow structures, coated components, or locations with restricted backside access.

Full-Hex vs. Self-Clinching Nuts

Self-clinching nuts depend on suitable workpiece hardness, thickness, and press-installation conditions.

Blind rivet nuts may offer greater flexibility in selected enclosed or single-sided assembly locations.

Full-Hex vs. Half-Hex Rivet Nuts

Full-hex designs use a hexagonal engagement profile along the designated full-hex body section.

Half-hex designs combine hexagonal and round body sections.

Selection should consider the required anti-rotation performance, workpiece geometry, available hole preparation process, and approved product drawing.

11. Industrial Applications

Automotive and Transportation Components

Full-hex blind rivet nuts may be evaluated for brackets, fabricated mounting points, tubular assemblies, and selected chassis-related components.

Safety-critical applications require specific engineering validation.

Tubular Steel and Hydroformed Components

Single-sided installation is particularly useful where access to the reverse side of a hollow section is restricted.

Magnesium Castings and Aluminum Extrusions

Hexagonal threaded inserts may be considered where the material geometry and strength support the required installation deformation.

Electrical Cabinets and Industrial Enclosures

Typical fastening points include mounting rails, removable covers, brackets, equipment panels, and service-access components.

Industrial Machinery

The reusable internal thread allows equipment covers and mounting components to be assembled and removed during maintenance.

12. Custom Designs and OEM Requirements

JUXIN FASTENERS can review customer-specific requirements involving:

• Special metric or imperial threads

• Modified flange dimensions

• Custom body lengths

• Special hexagonal body dimensions

• Different grip ranges

• Alternative steel specifications

• Customer-defined surface finishes

• Corrosion-resistance requirements

• Custom installation geometries

• Drawing-specific inspection requirements

Feasibility, tooling, minimum order quantity, and production arrangements are subject to quotation review.

13. Technical Drawings and CAD

Product Specification Reference: PDF Catalogue, Pages 97–98

Please refer to the detailed specification sheet and available CAD information for exact product dimensions.

Engineering drawings should confirm:

• Thread size and pitch

• Flange diameter

• Flange thickness

• Hexagonal body dimensions

• Body length

• Installation-hole dimensions

• Grip range

• Dimensional tolerances

Customers may submit 2D drawings and 3D CAD files for technical review.

14. OEM Procurement and RFQ Checklist

Key Product Advantages

High Torque-to-Turn Resistance

The full-hexagonal body provides mechanical engagement with the installation hole, helping prevent unwanted insert rotation during tightening and maintenance operations.

This feature is especially valuable for applications involving repeated bolt removal or relatively high installation torque.

High-Strength Internal Threaded Connection

The steel insert provides a reusable female thread in materials that may be too thin for reliable direct tapping.

Large-Flange Load Distribution

The flat, large-flange head provides an increased bearing area around the mounting hole and can improve local load distribution when correctly installed.

Single-Sided Installation

Installation can be completed from the accessible side of the workpiece without requiring a separate nut on the reverse side.

High-Speed Assembly

Compatible hand tools, pneumatic or hydraulic setting equipment, and suitable automated installation systems can support industrial production and assembly.

Open-End Design

The open-end configuration permits bolt penetration through the insert, providing flexibility in fastener length selection where backside clearance allows.

Color Zinc-Plated Steel

The steel construction provides mechanical strength, while the zinc-plated surface offers corrosion protection appropriate to the specified coating system and operating environment.

OEM and Custom Fastening Solutions

JUXIN FASTENERS can review customer drawings for special dimensions, thread requirements, flange configurations, surface finishes, and other project-specific requirements.

Industrial Applications

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

• Automotive body components and mounting brackets

• Tubular steel assemblies

• Hydroformed structural components

• Magnesium castings

• Aluminum extrusions

• Industrial machinery and equipment housings

• Electrical cabinets and switchgear enclosures

• Telecommunications equipment cabinets

• Fabricated sheet-metal components

• Transportation equipment

• Removable covers and service panels

• OEM assemblies requiring single-sided threaded fastening

Engineering and Procurement Support

For OEM design engineers, structural engineers, purchasing managers, and strategic sourcing teams, the correct blind rivet nut must be selected according to more than thread size alone.

Critical selection factors include installation-hole geometry, panel thickness, material strength, required torque-to-turn resistance, pull-out loading, coating requirements, and production installation conditions.

JUXIN FASTENERS works with customers to review these fastening requirements and identify suitable standard or drawing-based product options.

Our approach is focused on helping customers resolve engineering and sourcing challenges, reducing unnecessary procurement work, and supporting dependable long-term supply relationships.

Request an OEM Quotation

Please provide your required thread size, grip range, technical drawing, material specification, surface finish, expected order quantity, and application requirements.

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

JUXIN FASTENERS — Industrial Fastening and Custom Component Solutions.

Product Packaging – Full-Hex Blind Rivet Nuts Type B

Standard Industrial Packaging

JUXIN FASTENERS provides packaging for steel full-hex blind rivet nuts to support bulk purchasing, 

industrial transportation, warehouse storage, and OEM production requirements.

The standard packaging configuration consists of plastic inner bags, outer cartons, and palletized shipment arrangements for larger orders.

Packaging quantities and configurations may be adjusted according to thread size, product weight, customer requirements, and shipping conditions.

1. Inner Packaging – Plastic Bags

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

Products may be packed separately according to:

• Thread size

• Product type

• Surface finish

• Customer part number

• Batch or lot identification

• Required packaging quantity

The quantity per plastic bag depends on product size, weight, and the confirmed packaging specification.

Inner Packaging Identification

Where required, labels may include:

• Product name

• Thread size

• Material

• Surface finish

• Quantity

• Part number

• Batch or lot number

2. Outer Packaging – Cartons

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

Standard Carton Dimensions

The carton type is selected according to product dimensions, packing quantity, and shipment requirements.

Final quantities and carton weights are confirmed for each purchase order.

Carton Identification

Customer-specific carton labels may include:

• Product description

• Thread size

• Material and finish

• Customer part number

• Purchase order number

• Quantity per carton

• Net weight

• Gross weight

• Batch or lot identification

• Shipping marks

3. Pallet Packaging

For bulk industrial orders, cartons may be arranged on pallets for consolidated transportation and warehouse handling.

Supplied Pallet Dimensions: 215 × 100 × 90 cm

Pallet configurations may vary according to the number of cartons, shipment weight, transportation requirements, and customer instructions.

Pallet Shipment Information

Pallet identification may include:

• Total cartons per pallet

• Total pieces per pallet

• Product identification

• Purchase order number

• Gross shipment weight

• Pallet dimensions

• Destination and shipping marks

The final pallet configuration is confirmed before shipment.

4. OEM Customized Packaging

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

• Defined pieces per plastic bag

• Custom quantities per carton

• OEM part-number labels

• Barcode identification

• Batch and lot traceability

• Custom carton dimensions

• Customer-defined pallet configurations

• Warehouse receiving labels

• Distribution-center packaging instructions

• Special shipping marks

Customized packaging is subject to confirmation during quotation and order processing.

5. Packaging Protection for Zinc-Plated Steel

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

Recommended precautions include:

• Avoid prolonged exposure to moisture.

• Keep cartons away from corrosive substances.

• Prevent unnecessary abrasion of plated surfaces.

• Avoid excessive stacking loads.

• Maintain clear identification between product sizes.

• Store packaged products in a clean, dry warehouse environment.

Additional protective packaging may be reviewed for special transportation or storage requirements.

6. Packaging Specifications for OEM Purchase Orders

7. Bulk Order and Packaging Inquiries

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

Please provide the product thread size, required quantity, destination, and any special labeling or packaging instructions.

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

JUXIN FASTENERS — Industrial Fastening and Custom Component Solutions.