Screws
Screws are threaded fasteners that thread into tapped holes or form their own threads, including machine screws, socket cap screws, set screws, self-tapping and thread-forming screws. We supply standard and special screws in steel, stainless and brass.
What it is
Socket head cap screws (ISO 4762) give high strength in compact heads; countersunk and button heads sit flush or low-profile; set screws lock collars and pulleys; self-tapping and thread-forming screws fix into sheet metal and plastics without tapping.
Drive types (hex socket, Torx, Phillips, slotted) affect tightening and tamper resistance.
Typical applications
- Machine and fixture assembly
- Sheet metal and enclosure fixing
- Collars, pulleys and couplings (set screws)
- Electronics and instrument assembly
- Plastic part fixing
Materials & grades
- Carbon steel (4.6, 8.8, 10.9, 12.9)
- Stainless steel A2 (304) / A4 (316)
- Alloy steel (B7, high-tensile)
- Brass and non-ferrous
Points to consider
- Use thread-forming screws for plastics to avoid cracking.
- Specify drive type for assembly tooling.
- Countersunk screws need matching countersinks.
- Use thread lockers or patches for vibration.
Frequently asked questions
What is a socket head cap screw?
A high-strength screw with a cylindrical head and hex socket drive, standard in machinery (ISO 4762 / DIN 912).
What is a set screw used for?
Locking a collar, pulley or gear on a shaft by pressing its point against the shaft.
Which screws are best for plastics?
Thread-forming screws designed for plastics, which form threads without cracking the material.