Multi-Station Cold Heading

Drawing review example

Cold heading a flanged screw with a deep drive

Illustrative drawing review. Confirm the route, dimensions and acceptance for your part.

What drives the route: Review the head and recess together in section. Enlarging the flange changes the metal volume to be moved, while a deeper drive leaves less material below the recess. Identify the under-head transition and usable bearing face before splitting the blank into forming stages.
What changes the quotation: Separate the cost of heading tools from recurring pieces and any later recess, shoulder or hole machining. Ask which revision changes would require a tool change and whether the proposed wire condition and batch size support the formed route.
How to release the sample: Use samples from the intended forming route. Confirm the recess fit, flange seating and under-head geometry on the finished part, and agree what forming defects are unacceptable and how they will be checked. A turned mock-up can prove assembly access without proving formed-head quality.

Related fastener families

Related technical guides

Continue through the process

Process decision and release matrix

Resolve these items during technical review. Each row identifies a decision or evidence requirement; it does not imply a universal process limit or an in-house equipment claim.

Decision	Required input	Release question
Geometry and tooling	Identify head volume, steps, recess, blank and any later machining	What can be formed and which features still need a separate operation?
Material and wire condition	Specify grade and requirements for the intended final part	Is the proposed input suitable for the forming and treatment route?
Production economics	Separate tooling, samples, recurring quantity and secondary work	Does the complete route make sense at the expected repeat volume?
Sample release	Identify production-route samples and critical formed features	What must be reconfirmed if an early prototype was machined?

AFTER PROCESSING

See the resulting feature.

Visual references help explain geometry and finish. Material properties, coating performance and acceptance require the agreed inspection methods.

Cold heading — formed blank — Process outcome reference; final requirements follow the approved drawing.

Inputs and outputs for Multi-Station Cold Heading

The process review begins with Shoulder & Step Screws, Custom Flange Screws, Security & Tamper-Resistant Screws, Custom Carriage Bolts and the actual drawing, not a generic equipment list. Identify the incoming stock or part condition and the dimensions that must remain controlled at this stage.

Use the process topics above to resolve where it fits; operations to review; what drives the quotation; mechanical considerations. Record the selected requirements in the order specification. A process name does not establish the resulting tolerance, property class or inspection coverage.

Coordinate the next operation

The next review may involve Cold Heading + Secondary Machining or Thread Rolling, Cutting & Tapping. Check which surfaces are used to locate the part, whether the next operation changes dimensions and at what stage final acceptance is measured. Where a requirement cannot be checked after assembly or finishing, agree an intermediate check as well as final verification.

For samples involving tooling, the typical lead time is approximately 10–15 days, subject to drawing review and confirmation of material, finishing and inspection scope. The complete route determines the confirmed schedule; the duration is not a promise for each individual process.

CONNECTED SPECIFICATION TOPICS

Connect the part to its requirements.

Review these related topics for this design or route. Grade, treatment, geometry and acceptance remain drawing-specific.

MATERIAL & FINAL CONDITION

Multi-Station Cold Heading

Where it fits

Operations to review

What drives the quotation

Mechanical considerations

Cold heading a flanged screw with a deep drive

Related fastener families

Related technical guides

Continue through the process

Process decision and release matrix

See the resulting feature.

Inputs and outputs for Multi-Station Cold Heading

Coordinate the next operation

Connect the part to its requirements.

Carbon & Alloy Steel ↗

Automotive Components ↗

Energy, Charging & Storage Equipment ↗

Custom T-Slot Bolts ↗

Custom Square Head Bolts ↗

Discuss the route behind your drawing.