304Cu Stainless Steel Fastener Wire 0.15–12mm for Cold Heading

Product Introduction

TOPONE 304Cu stainless steel fastener wire is designed for manufacturers producing screws, bolts, rivets, pins, studs and other cold-formed fastening components.

Made from SUS 304Cu stainless steel, this wire is available in diameters from 0.15–12mm, with surface conditions including skin-pass and soap-coated finishes, subject to the selected specification.

Cold heading forms wire into components through compressive force at room temperature. Material grade, wire diameter, dimensional tolerance, mechanical condition and surface lubrication all need to be considered when selecting wire for a specific forming process.

TOPONE can discuss wire specifications according to the customer's fastener design, production equipment and applicable material standard.

Product Specifications

Note: Confirm the exact material standard, dimensional tolerance, tensile strength, elongation and hardness for the required specification before ordering.

Why Choose 304Cu Stainless Steel Fastener Wire?

304Cu Grade for Cold Heading

304Cu is an austenitic stainless steel grade commonly used in cold heading and stainless steel fastener manufacturing.

It can be considered for components that require forming from stainless steel wire. Actual formability depends on the material composition, wire condition, component geometry, tooling and forming sequence.

0.15–12mm Diameter Range

The available diameter range covers different fastener designs, from fine wire components to larger formed parts.

For precision fasteners, nominal diameter should be specified together with the required dimensional tolerance. The starting wire size should also match the finished component dimensions and forming allowance.

Skin-Pass and Soap-Coated Surface Options

Skin-pass processing and soap coating can be specified for suitable production requirements.

The skin-pass condition relates to the wire's finishing and dimensional requirements, while soap coating provides a surface lubricant for certain forming processes. The appropriate treatment should be selected according to the forming equipment, tooling and lubrication system.

Specification-Based Customization

Wire diameter, tolerance, mechanical properties, surface condition, coil dimensions and packaging can be discussed according to the customer's production needs.

Applications

Stainless Steel Screw Manufacturing

304Cu fastener wire can be used as feedstock for screw production through cold heading and subsequent thread-forming operations.

Wire dimensions and mechanical condition should be matched to the screw design, forming stages and tooling requirements.

Bolt and Stud Manufacturing

The wire may be considered for bolts, studs and other formed fastening components when the selected material properties meet the applicable specification.

Rivets and Pins

For rivets, pins and similar components, wire selection should account for the required geometry, deformation during forming and dimensional tolerances.

General Industrial Fasteners

304Cu wire may also be considered for other cold-formed fastening components used in machinery, equipment and general hardware manufacturing.

How to Select 304Cu Fastener Wire for Cold Heading

1. Confirm the Finished Component

Provide the component drawing or key dimensions, including head size, shank diameter, length and thread requirements where applicable.

These details help determine the appropriate starting wire diameter and forming requirements.

2. Specify Diameter and Tolerance

Select the nominal diameter within the available 0.15–12mm range and define the required tolerance according to the component drawing or applicable standard.

3. Confirm Mechanical Properties

Tensile strength, elongation and hardness may affect material deformation during cold heading. Confirm the required values for the selected diameter and forming process rather than relying on the grade designation alone.

4. Select the Surface Condition

Specify bright, skin-pass or soap-coated wire according to the required finish, tooling and lubrication method. If a particular coating process is required, confirm it before production.

5. Review the Forming Process

For multi-stage cold heading or components involving substantial deformation, consider the forming sequence, heading ratio, die design and production equipment when defining the wire specification.

6. Confirm the Applicable Standard

Identify the exact material standard and grade requirements. ASTM, JIS, EN, DIN and GB refer to different standards systems, so the applicable document should be confirmed rather than assuming all standards are interchangeable.

Technical Checklist for Buyers

Before requesting a quotation, prepare the following information:

• Material grade: 304Cu / SUS 304Cu

• Wire diameter and tolerance

• Required tensile strength and elongation

• Surface finish and lubrication requirements

• Finished component type and dimensions

• Cold-heading process and number of forming stages

• Applicable material standard

• Required quantity and coil or spool specifications

• Packaging requirements

Providing these details helps establish a clear specification for production and inspection.

Frequently Asked Questions

What is 304Cu stainless steel fastener wire used for?

It is used in the manufacture of cold-formed fasteners such as screws, bolts, rivets, pins and studs, subject to the required material and mechanical specifications.

What diameter range is available?

The stated range is 0.15–12mm. Confirm the availability, tolerance and mechanical condition for the selected diameter.

What is the purpose of soap coating?

Soap coating provides lubrication for certain wire-forming and cold-heading processes. Its suitability depends on the customer's equipment, tooling and lubrication requirements.

Can the wire be supplied with a skin-pass surface?

Skin-pass and soap-coated options are listed for this product range. Confirm the required surface condition and process details for the specific order.

What information is needed for a quotation?

Please provide the material grade, diameter, tolerance, mechanical requirements, surface finish, application, applicable standard, quantity and packaging requirements. A component drawing is helpful for precision fastener production.

Request a Custom Specification

Contact TOPONE Wire with your 304Cu stainless steel fastener wire requirements. Share your target diameter, finished component design and cold-heading process to discuss a suitable specification for your production needs.