Header Punches & Punch Pins
Hexagonal Pin Punch Tool for Precision Recess Forming
Hexagonal pin punch tooling for socket or recess forming. Jungu checks hex corner radius, punch length, alignment, material route, coating, and broken-tip pattern before quoting.
What is Hexagonal Pin Punch Tool for Precision Recess Forming used for?
A hexagonal pin punch tool forms internal hex or similar recess geometry in cold-headed fasteners and precision metal parts. The weak area is usually the punch corner or tip transition. If the hex corner is too sharp, the unsupported length is long, or the station is misaligned, the punch can chip even when material hardness is correct. If the coating is chosen without checking material and lubrication, galling may appear before the punch reaches expected life. Jungu reviews the recess drawing, across-corners size, corner radius, punch length, holder fit, machine station, workpiece material, coating route, lubrication, and photos of broken tips, rounded corners, galling, or shallow recess before quoting.
Common sourcing use
Internal hex or socket recess forming where corner radius, unsupported length, alignment, and coating route decide punch life.
Related product families
Precision recess punch or standard cold-heading hex punch?
Use this precision-recess page when recess depth, draft, corner definition, unsupported punch length, holder runout, or a tight inspection method drives the decision. Use the cold-heading hex punch page when the main sourcing question is repeated impact, HSS or carbide-supported material choice, coating, and corner breakage in a conventional heading station.
Technical Review Scope
What Jungu checks
- Recess drawing, across-corners size, corner radius, depth, draft, and tolerance
- Punch length, holder interface, support length, station alignment, and runout risk
- Workpiece material, hardness, lubrication, coating route, and target output
- Failure mode: tip chipping, rounded corner, galling, shallow recess, bending, or short life
Why no standard price is shown
Quotation follows the recess drawing and the unsupported punch geometry. Recess depth, corner radius, punch length, holder fit, station alignment, material route, and coating expectation all change the manufacturing and inspection route.
Information Needed for Quotation
| Recess geometry | Drawing with hex size, corner radius, depth, draft, and inspection method. |
|---|---|
| Punch support | Punch length, holder fit, support length, station number, and assembly photos. |
| Material route | Part material, hardness, lubrication, coating preference, and target tool life. |
| Failure evidence | Photos of broken tip, rounded corners, galling, shallow recess, or bent punch. |
Application and Buyer Fit
| Typical application | internal hex or socket recess forming where corner radius, unsupported length, alignment, and coating route decide punch life |
|---|---|
| Buyer review focus | hex size, corner radius, punch length, holder fit, station alignment, workpiece material, coating, and broken-tip evidence |
| Quotation basis | drawing, material, tolerance, machine model, quantity, and target tool life |
| Review output | a hex punch route matched to recess tolerance, support length, material route, and forming station |
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 do hex punch corners chip?
Sharp radius, long unsupported length, hard material, misalignment, or coating mismatch can concentrate stress.
Can Jungu change the radius?
Only if the finished recess tolerance allows it. We check radius against the drawing and gauge method.
Is coating always needed?
No. Coating is selected after material, lubrication, and galling pattern are reviewed.
How is this different from a general hexagonal punch pin?
This page is for precision recess geometry where depth, draft, unsupported length, and holder runout need closer review. A standard cold-heading hex punch may focus more on impact and material route.
Need this tooling reviewed?
Send drawings, machine model, material, and current failure photos for review.