On this page 5 sections
Key features of stud bolts
- Fully threaded with two nuts
- ASME B18.31.2 dimensions
- Grades B7, B7M, B8, B8M, B16, L7 and CRA
- Lengths to flange tables
Stud Bolts by material
Stud Bolts are available in the following grades. Select a grade for specifications and sizes.
Stainless Steel
- SS 304 Stud Bolts
- SS 316 Stud Bolts
- SS 316L Stud Bolts
- SS 321 Stud Bolts
- SS 347 Stud Bolts
- SS 410 Stud Bolts
- SS 904L Stud Bolts
- Duplex 2205 Stud Bolts
- Super Duplex 2507 Stud Bolts
Nickel Alloys
- Inconel 600 Stud Bolts
- Inconel 625 Stud Bolts
- Inconel 718 Stud Bolts
- Incoloy 800 Stud Bolts
- Incoloy 825 Stud Bolts
- Monel 400 Stud Bolts
- Monel K-500 Stud Bolts
- Hastelloy C22 Stud Bolts
- Hastelloy C276 Stud Bolts
Non-Ferrous Metals
Stud Bolts: sizes, finishes and testing
- Size range
- M6 – M100 and ¼" – 4" (larger on request); lengths to flange tables or drawing
- Finish
- Plain, black oxide, zinc, hot-dip galvanised, PTFE-based fluoropolymer, zinc-nickel
- Ends
- Chamfered points; full or partial thread
Testing & documents
- Chemical and mechanical tests of bar and finished bolts
- Hardness tests
- Proof-load and wedge tests where applicable
- Coating thickness and adhesion
- EN 10204 3.1 certificate; 3.2 with third-party inspection
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Other bolts types
Frequently asked questions
What sizes are stud bolts available in?
M6 – M100 and ¼" – 4" (larger on request); lengths to flange tables or drawing.
Which specifications cover stud bolts?
ASME B18.31.2 dimensions.
What are stud bolts used for?
ASME B18.31.2 dimensions. They're the standard bolting for ASME B16.5/B16.47 flanges, made to ASTM A193, A320 and A453 grades or corrosion-resistant alloys.
Which materials are stud bolts available in?
Stainless steel, nickel alloys, carbon and alloy steel and non-ferrous metals, depending on the specification. See the material list above.