Header Punches & Punch Pins
Carbide Die Core and Punch Set for Bolt Dies
Matched carbide die core and punch set for bolt die assemblies. Jungu checks punch-to-die alignment, cavity support, material flow, and wear pattern before quoting.
What is Carbide Die Core and Punch Set for Bolt Dies used for?
A carbide die core and punch set should be reviewed as a matched assembly, not as two separate spare parts. The punch pushes material into the die cavity, so small errors in alignment, radius, cavity support, or punch nose finish can become poor fill, eccentric heads, galling, or early carbide chipping. Jungu reviews both drawings together: punch length, nose profile, die core cavity, case support, station layout, fastener material, coating route, and photos of the rejected part. This page is for buyers replacing a complete bolt die set or trying to solve a repeated mismatch between punch wear and die core damage. We compare the worn punch nose with the cavity marks because the first damaged surface is often not the root cause.
Common sourcing use
Head forming, piercing, stamping, and special-shaped punch operations in fastener production.
Related product families
Technical Review Scope
What Jungu checks
- Punch nose profile, punch length, die core cavity, cavity radius, and matched tolerance
- Die case fit, carbide support, punch alignment, station layout, and lubrication condition
- Current issue: eccentric forming, poor fill, galling, punch nose wear, carbide chipping, or split marks
Why no standard price is shown
This is B2B custom tooling. A reliable quotation depends on drawing, material, size, tolerance, machine setup, annual quantity, and the mould-life issue the buyer wants to solve. Jungu quotes after technical review instead of showing a misleading fixed price.
Information Needed for Quotation
| Drawing | 2D drawing, 3D file, or sample photos with critical dimensions. |
|---|---|
| Production Context | Fastener type, material, machine model, station count, and annual demand. |
| Quality Target | Tolerance, surface finish, coating, target mould life, and current failure mode. |
| Commercial Context | Prototype quantity, mass-production demand, target delivery time, and destination country. |
Application and Buyer Fit
| Typical application | head forming, piercing, stamping, and special-shaped punch operations in fastener production |
|---|---|
| Buyer review focus | head geometry, punch material, coating, hardness, machine station, wear pattern, and impact load |
| Quotation basis | drawing, material, tolerance, machine model, quantity, and target tool life |
| Review output | a custom punch route matched to the drawing, production line, and tool-life target |
Inquiry Process
- Send drawings and application details.
- Jungu reviews manufacturability and tooling route.
- Engineering confirms material, tolerance, and mould-life target.
- Quotation and lead time are prepared after technical confirmation.
FAQ
Why quote the punch and die core together?
Because the forming result depends on how the punch drives material into the die cavity. Reviewing only one side can miss the real failure cause.
What photos help the fastest?
Send the worn punch nose, die cavity, assembled station, and rejected fastener from front and side views.
Can this product be customized?
Yes. Jungu manufactures fastener mould tooling according to buyer drawings, samples, and machine requirements.
What should be sent first?
Send the drawing, material, machine model, tolerance requirements, annual quantity, and current tool-life problem.
Need this tooling reviewed?
Send drawings, machine model, material, and current failure photos for review.