Studbolts – UK Manufacture
APIS are a manufacturer and stockist in high integrity bolting for use in both the Offshore and Petrochemical Industries.
From our Stallingborough HQ, we hold a wide range of raw material as well as finished, semi-finished and coated products.
Products including studbolts, hex bolts and sets, socket capscrews and nuts are supplied according to customer requirements.
All petrochemical grades of material are catered for in both imperial and metric diameters.
1/2”-4”, M8-M100 are all available in a wide variety of corrosion resistant finishes.
All material is sourced and released to governing international standards, predominantly ASTM and ASME.
Carbon / Alloy | Stainless | Coatings |
---|---|---|
B7 | B8 Class 1+2 | Zinc Clear |
L7 | B8M Class 1+2 | Zinc Bichromate |
B5 | B8T Class 1+2 | Zinc Nickel |
B16 | B8C Class 1+2 | Hot Dip Galvanised |
B16A | B6 | Xylar (Cermet coatings) |
Durehete | PTFE (Xylan®) all colours | |
8.8 | A2-50/70/80 | Molykote |
10.9 | A4-50/70/80 | Cadmium |
12.9 | Inorganic Coatings |
Product Type | Metric DIN | Imperial ASME (Heavy) |
---|---|---|
Studbolts | 976 | B16.5 |
Hexagon Bolts | 931/4014 | B18.2.1 |
Hexagon Setscrews | 933/4017 | B18.2.1 |
Socket Capscrews | 912 | B18.3 (1960) |
Hexagon Nuts | 934 H=D | B18.2.2 |