SPECIAL FASTENERS MANUFACTURED TO SUIT CUSTOMERS’ REQUIREMENTS:
- To drawings
- To customer specifications
- With additional testing
- In unusual materials
- With unusual threads
- With unusual dimensions/tolerances
Types of fasteners manufactured include:
- Hex bolts
- Hex setscrews
- Hex nuts
- Nuts – round, cap
- Socket capscrews
- Grub screws
- Socket countersunk screws
- Engineer studs
- Wasted studs
- Studbolt assemblies
- 12 point (ferry head) bolts

PRODUCT DIMENSIONAL STANDARDS
BOLTS AND SETSCREWS (NORMAL AND HEAVY SERIES) | ANSI | B18.2.1 | |||
DIN | 931 | 933 | |||
BS | 1083 | 1768 | 1769 | 3692 | |
ISO | 4014 | 4017 | |||
SOCKET CAPSCREWS (1936 & 1960 SERIES) | |||||
ANSI | B18.3 | ||||
DIN | 912 | 913 | 916 | 6912 | |
BS | 2470 | 4168 | |||
ISO | 4762 | ||||
STUDBOLTS | |||||
ANSI | B16.5 | ||||
DIN | 975 | 976 | |||
BS | 4882 | ||||
NUTS (NORMAL AND HEAVY SERIES) | |||||
ANSI | B18.2.2 | ||||
DIN | 934 | ||||
BS | 1083 | 1768 | 1769 | 3692 | |
ISO | 4032 | ||||
ENGINEER STUDS | DIN | 938 | 939 | 2510 | |
BS | 2693 | 4439 | 4882 | ||
WASHERS | Flat | Tab | Spring | Special designs |
THREAD FORMS
All fasteners can be supplied with the following thread forms: | ||
METRIC | Metric fine | Metric coarse |
UN | UNC | UNS |
UN8 | UNF | |
WHITWORTH | BSW | BSF |
ANCILLARY processes
HEAT TREATMENT | Quenching and tempering | Thru Hardening |
Normalising | Solution Annealling | |
Nitriding | Precipitation Hardening | |
Case Hardening | ||
COATINGS | Zinc | Phosphate |
Zinc Nickel | Molykote | |
Hot Dip Galv | Sherardizing | |
PTFE/Xylan/Xylar/Teflon | Cadmium |