Product Family

Cold Heading Dies for Bolts and Screws

Drawing-based cold heading dies, carbide die cores, die cases, and special forming tooling for bolt and screw production.

Browse by Tooling Type

Review representative products by tooling function, then send drawings for a supplier evaluation.

Tooling Type

Cold Heading Dies

Drawing-based heading dies for stable bolt and screw forming.

Tooling Type

Die Cases & Inserts

Die cases, carbide inserts, and supported die assemblies.

Tooling Type

Special-Shaped Dies

Hex, engineered, and non-standard fastener forming dies.

Custom capability

Materials: Tungsten carbide, HSS, SKD series steel, and custom carbide grades. Jungu reviews critical dimensions, surface finish, coating, annual demand, and existing tooling failure before quotation.

Typical Applications

Bolt and screw forming stations

Match each die to the part drawing, station sequence, machine interface, blank condition, and the intermediate shape entering that station.

Carbide inserts and supported die cases

Review insert geometry together with case fit, support length, loading direction, and the crack or wear location before selecting a replacement construction.

Special heads and recessed profiles

Send the head geometry, recess details, material grade, inspection method, and rejected-part photos so filling, alignment, and release can be reviewed together.

Engineering review

What changes a cold heading die route before quotation?

Cold heading dies are often called cold forming dies in RFQs, but the name alone does not define the tooling route. The useful decision is whether the forming load, material flow, and die support call for a carbide core, a steel body, or a supported die-case assembly.

Machine and station

Send the machine model, station number, and forming sequence. A die that fits one station can fail early in another because the load path and support are different.

Blank and wire condition

Blank diameter tolerance, wire grade, hardness, lubrication, and surface condition affect cavity pressure before the finished bolt or screw is inspected.

Failure evidence

Photos of chipping, radial cracks, galling, folds, or dimensional drift help separate a material problem from a support, radius, or alignment problem.

A carbide die core will not solve a crack caused by weak case support or off-center load. Send the drawing, machine data, blank material, and failed-tool photos so the quote reflects the working condition rather than a generic die name.

Related engineering review pages

Use these detail pages when the RFQ needs a closer review of drawing data, tooling fit, and failure evidence.

Which RFQs need a forming-route review before a die quote?

When an RFQ provides only a part diameter and a product name, the forming route is still undefined. Head geometry, under-head transitions, intermediate shapes, and station sequence decide where each die carries load. Carbide support and die-case fit should be reviewed before the insert material or construction is selected. If the current tool chips, cracks, or produces folds, mark the failure location and include a sample part or clear photos. Copying the current cavity without that evidence can copy the same problem into the replacement tool. A useful quotation connects the part drawing to the machine, forming sequence, and current failure. A price based only on the label "cold heading die" or "bolt die" does not provide that engineering context.

Minimum RFQ data for cold heading dies

  • Part drawing with tolerances and critical forming features
  • Machine model, station number, and forming sequence
  • Wire grade, surface condition, and lubrication route
  • Blank dimensions and available intermediate-part drawings
  • Current die assembly, support, fit, and clamping details
  • Failed-tool photos or sample parts when troubleshooting

Send drawings, machine model, material, and current failure photos for review.

Buyer guides for cold heading dies

Compare tungsten carbide and tool steel for cold heading dies when wear, impact, or tool cost is the question. Use the cold heading die supplier checklist before sending a new drawing for quotation.

Need a custom Bolt & Screw Forming Dies review?

Send 2D or 3D drawings, material, machine model, annual volume, and current mould-life issue.

Send Drawings

Related video

Cold heading die manufacturing video

See how Jungu presents drawing-based cold heading die and carbide tooling capability for bolt, nut, and special fastener production.

Watch on YouTube