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Low-Profile Open-End Knurled Steel Blind Rivet Nuts – Blue Zinc

JUXIN FASTENERS manufactures blue zinc-plated carbon steel blind rivet nuts with thin heads, open-end barrels, and knurled round bodies for low-profile threaded fastening in sheet metal, hollow sections, and industrial assemblies requiring one-sided installation.

The thin flange reduces head projection, while the knurled body helps resist insert rotation. The open-end design allows screw extension where sufficient backside clearance is available.

Product Features

Metric thread sizes: M3, M4, M5, M6, M8, M10, M12
UNC thread sizes: #6-32, #8-32, 1/4"-20, 5/16"-18, 3/8"-16, 1/2"-13
Material: Carbon steel
Surface finish: Blue zinc plating
Grip range: 0.5–6.0 mm (approx. 0.020–0.236 in) across the product family, depending on configuration
Head style: Thin head / Low-profile flange
Body style: Knurled round body
End style: Open end
Installation: One-sided blind installation

Typical applications include electrical enclosures, automotive brackets, machinery covers, equipment housings, tubular structures, and OEM sheet-metal assemblies requiring reduced flange projection and improved rotational resistance.

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Product Specification

Technical Specifications — Blue Zinc Low-Profile Knurled Steel Rivet Nuts

Product Identification

Parameter	Specification
Product Type	Thin Head Open-End Knurled Blind Rivet Nut
Alternative Names	Low-Profile Rivet Nut, Small Flange Ribbed Nutsert
Material	Carbon Steel
Head Type	Thin Head / Reduced Flange Height
Body Type	Knurled Round Body
End Type	Open End
Surface Treatment	Blue Zinc Plating
Metric Thread Sizes	M3, M4, M5, M6, M8, M10, M12
Published Series Grip Range	0.5–6.0 mm (approximately 0.020–0.236 in)
Installation Method	One-Sided Blind Rivet Nut Setting
Mounting Hole Diameter	Refer to approved drawing
Head Diameter and Height	Refer to approved drawing
Body Length	Refer to approved drawing
Knurl Geometry	Refer to approved drawing
Individual Grip Range	Refer to approved drawing
Custom Dimensions	Subject to technical review

Metric Thread Sizes

The following are standard ISO metric coarse thread designations.

Metric Thread	Pitch (mm)	Nominal Diameter (in)
M3 × 0.5	0.50	0.1181
M4 × 0.7	0.70	0.1575
M5 × 0.8	0.80	0.1969
M6 × 1.0	1.00	0.2362
M8 × 1.25	1.25	0.3150
M10 × 1.5	1.50	0.3937
M12 × 1.75	1.75	0.4724

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

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

Unified Inch Threads — US OEM Inquiry Reference

The current product information confirms metric sizes but does not establish standard Unified inch availability for this exact blue zinc-plated configuration.

The following thread designations may be reviewed for US OEM sourcing requirements.

Unified Thread	Threads Per Inch	Availability
#4-40 UNC	40	Subject to confirmation
#6-32 UNC	32	Subject to confirmation
#8-32 UNC	32	Subject to confirmation
#10-24 UNC	24	Subject to confirmation
#10-32 UNF	32	Subject to confirmation
1/4-20 UNC	20	Subject to confirmation
5/16-18 UNC	18	Subject to confirmation
3/8-16 UNC	16	Subject to confirmation
1/2-13 UNC	13	Subject to confirmation

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

Metric and Unified inch threads are not interchangeable.

Grip Range — Metric and Inch Reference

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

Panel Thickness (mm)	Approximate Thickness (in)
0.5	0.0197
1.0	0.0394
1.5	0.0591
2.0	0.0787
2.5	0.0984
3.0	0.1181
4.0	0.1575
5.0	0.1969
6.0	0.2362

These values are unit conversion references, not approved individual grip intervals.

Each selected rivet nut configuration must be verified against the applicable product drawing.

Engineering Selection and Installation Guide

1. Thin Head Versus Large Flange

Thin head and large flange rivet nuts serve different design requirements.

A thin head minimizes 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 panels or applications requiring greater resistance to pull-through.

Engineers should evaluate head height, head diameter, panel deformation, and installed load requirements before selecting a configuration.

2. Low-Profile Versus Countersunk Head

A low-profile rivet nut has a reduced-height flange but does not necessarily sit completely flush with the mounting panel.

A countersunk rivet nut is designed for installation into a corresponding countersunk mounting geometry.

These head styles should not be treated as interchangeable without reviewing the drawing and installation requirements.

3. Knurled Body Versus Smooth Body

The knurled exterior provides surface features intended to improve mechanical engagement with the mounting material.

A smooth-body rivet nut may be more appropriate for certain material conditions or installation requirements.

Actual spin-out and pull-out performance should be verified through representative testing.

4. Mounting Hole Tolerance

Mounting hole dimensions directly influence installation quality and retention performance.

An oversized hole may reduce knurl engagement and increase the risk of insert rotation.

An undersized hole may cause excessive installation force, coating damage, or panel deformation.

Hole diameter, tolerance, and edge condition should follow the approved drawing.

5. Grip Range Selection

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

The published series range does not mean every thread size can accommodate every panel thickness within that range.

For multi-layer assemblies, engineers should consider the combined thickness of the materials being clamped.

6. Coating Selection and Corrosion Performance

Blue zinc plating provides a protective finish for carbon steel rivet nuts.

However, corrosion resistance cannot be determined from the appearance or color of the coating alone.

OEM coating specifications should define:

Zinc coating thickness
Passivation system
Restricted-substance requirements
Corrosion test method
Acceptance criteria
Service environment
Handling and storage requirements

ASTM B633 may be considered where appropriate to the selected zinc electroplating system.

Compliance with RoHS or REACH requirements must be supported by applicable material and coating documentation.

7. Open-End Screw Clearance

The open-end barrel allows the mating screw to extend through the insert.

Engineers should confirm:

Required thread engagement
Screw length
Backside clearance
Interference with adjacent components
Thread fit
Assembly torque

An open-end rivet nut does not provide an environmental seal through the rear of the insert.

8. Installation Procedure

Review the approved technical drawing.
Confirm panel thickness and grip range.
Prepare the specified mounting hole.
Inspect the hole for burrs and deformation.
Select the correct installation mandrel.
Thread the rivet nut onto the setting tool.
Insert the rivet nut into the mounting hole.
Seat the low-profile flange against the panel.
Keep the setting tool perpendicular to the workpiece.
Apply the approved setting stroke or force.
Release the tool and inspect the installed rivet nut.
Verify thread integrity and mechanical retention.

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

9. OEM Mechanical Validation

Representative application-specific validation may include:

Mounting hole inspection
Installation stroke or force verification
Flange 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 should be established according to the OEM application and approved technical documentation.

Technical Drawing and CAD Reference

The existing product documentation references detailed specification PDF pages 93–94 and related CAD information.

Please review the applicable drawing revision for:

Head diameter and height
Body diameter and length
Mounting hole dimensions
Knurl geometry
Individual grip ranges
Thread dimensions
Installation requirements

Custom sizes and configurations can be reviewed according to customer drawings.

OEM RFQ Checklist

For accurate engineering review and quotation, please provide:

Required metric or Unified inch thread
Mounting material
Panel thickness
Mounting hole diameter and tolerance
Required grip range
Head height and diameter requirements
Body length and backside clearance
Knurl geometry requirements
Surface finish specification
Corrosion resistance requirements
Spin-out and pull-out performance requirements
Approved 2D drawing or 3D CAD model
Sample quantity
Initial order quantity
Annual demand forecast
Inspection and documentation requirements
Packaging requirements

Industrial Applications

Automotive and Commercial Vehicle Assemblies

Potential applications include interior mounting brackets, fabricated sheet metal housings, removable covers, and selected non-critical equipment attachments.

Electrical and Electronic Equipment

Low-profile knurled rivet nuts may be considered for electrical cabinets, control panels, industrial electronic housings, and removable mounting components.

HVAC and Refrigeration Equipment

Suitable candidate applications include ventilation equipment, equipment housings, fabricated brackets, and service access panels.

Industrial Machinery

These inserts may be used in machinery guards, equipment covers, fabricated enclosures, and other assemblies requiring blind threaded installation.

Furniture and Metal Fabrication

Potential applications include tubular furniture frames, metal fixtures, shelving structures, and fabricated sheet metal components.

Transportation and Rail Interiors

These fasteners may be evaluated for selected non-structural interior panels, mounting brackets, and equipment housings, subject to project-specific engineering approval.

OEM Engineering and Procurement Support

JUXIN FASTENERS supports drawing-based sourcing inquiries for blue zinc-plated low-profile knurled steel rivet nuts.

Engineering teams can provide mounting hole dimensions, panel thickness, head geometry, grip range, and installation performance requirements.

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

annual forecasts, inspection requirements, and packaging specifications.

Request an OEM Quotation

For blue zinc-plated low-profile knurled steel blind rivet nuts, custom threaded inserts, and industrial bulk purchasing requirements, contact:

JUXIN FASTENERS

Email: info@juxinfasteners.com

Website: www.juxinfasteners.com

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

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

Product Packaging

Industrial Export Packaging — Blue Zinc Low-Profile Knurled Rivet Nuts

Standard Packaging

JUXIN FASTENERS provides export packaging for blue zinc-plated 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

Packaging Type	Dimensions (cm)	Approximate Dimensions (in)
Carton Option 1	29 × 19 × 19.5	11.42 × 7.48 × 7.68
Carton Option 2	23.5 × 17.5 × 8	9.25 × 6.89 × 3.15
Pallet Reference	215 × 100 × 90	84.65 × 39.37 × 35.43

Actual packaging dimensions, quantities per carton, and pallet arrangements 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 zinc-plated carbon steel rivet nuts, packaging should minimize moisture exposure and reduce unnecessary damage to plated surfaces during handling and transportation.

Customized OEM Packaging

Customer-specific packaging requirements can be reviewed, including: