Product Overview
Custom cold-headed screws are fasteners whose dimensions, head geometry, drive recess, thread and material are selected for a particular assembly rather than chosen only from a general catalog. Cold heading is well suited to repeat production because wire can be cut and formed into a headed blank with dedicated dies before the external thread is produced in a separate thread-rolling operation.
The page covers both standard-style screws produced to a recognized specification and non-standard fasteners made to a controlled customer drawing. It does not define one fixed material, size or production capacity. Those details must be reviewed for each quotation together with tooling, order quantity, inspection and finishing requirements.
Custom Screw Options
| Head styles | Pan, truss, flat/countersunk, hex, flange, socket and drawing-specific forms |
|---|---|
| Drive options | Phillips, Pozidriv, slotted, hex socket, Torx and application-specific recesses |
| Thread forms | Machine screw, self-tapping, thread-forming, full or partial thread, subject to drawing review |
| Materials | Carbon steel, alloy steel, stainless steel and other workable grades, confirmed for each RFQ |
| Finishes | Plating, passivation, black oxide and other specified treatments, subject to supplier capability |
| Definition | DIN, ISO, ANSI/ASME, JIS, GB, controlled customer drawing or approved physical sample |
Cold Heading and Thread Rolling
The two workshop videos below record the main forming stages represented by this material. The first follows wire feeding and head formation. The second shows headed blanks being oriented and moved through thread rolling. They are process references, not proof of a particular material grade, tolerance or mechanical property.
Cold Heading
Wire is cut and plastically formed between dies to create the screw blank, head and drive recess.
Thread Rolling
The headed blank passes between rolling dies that form the external thread without cutting it away.
Materials and Finishes
Supplier evaluation can cover carbon steel, alloy steel and stainless steel fasteners, but a material cannot be approved by appearance. The RFQ should state the exact grade or performance requirement together with heat treatment, hardness, strength class, corrosion target and any required material certificate.
Surface finish is also part of the controlled specification. Zinc plating, passivation, black oxide and other treatments differ in appearance, coating thickness, corrosion performance and dimensional effect. The supplier must quote the finish that matches the drawing and application rather than selecting one from a photograph.
Typical Applications
- Industrial equipment and machinery assembly
- Electrical enclosures and sheet-metal assemblies
- Furniture, fixtures and hardware
- Appliances and consumer-product assemblies
- Automotive and transport components after supplier qualification
- Outdoor products with a specified corrosion-resistance requirement
- Replacement of non-standard or discontinued screws
- OEM production requiring a controlled drawing and repeat batch supply
Final suitability depends on the approved drawing, joint design, load, environment and applicable product standard.
Inspection Points for Custom Screws
A practical inspection plan may include thread diameter and pitch, overall length, head diameter and height, drive recess, thread gauge, coating, hardness, mechanical testing, corrosion testing, quantity and packing. The required instruments, sampling level and acceptance criteria should be agreed before production.
- Drawing revision and complete item description
- Critical dimensions and thread gauges
- Head geometry and drive-recess fit
- Material and heat-treatment documents where required
- Surface finish, coating thickness and corrosion testing
- Sampling plan, quantity count, labels and packing
Information Required Before Ordering
- Controlled drawing or applicable DIN, ISO, ANSI/ASME or JIS standard
- Thread diameter, pitch, length and tolerance
- Head style, head dimensions and drive recess
- Material grade and required mechanical properties
- Heat treatment, hardness or strength-class requirement
- Surface treatment, coating thickness, color and corrosion target
- Sample requirement, inspection plan and test documents
- Annual demand, order quantity, packing and destination
MAVORIX Custom Fastener Sourcing Support
MAVORIX is an independent China-side sourcing and coordination partner, not the screw manufacturer. We can help clarify an RFQ, identify suppliers with relevant cold-heading and thread-rolling capability, compare quotation scope, follow samples, coordinate agreed inspection records and consolidate approved fasteners with other industrial items.
Buyers can connect this requirement with our metal parts sourcing, quality inspection and contact pages.