Stud bolts
A fully threaded rod cut to length, chamfered both ends, supplied with two heavy hex nuts. It is the standard fastener for a flanged joint because it can be tightened from either side and replaced without pulling the pipe apart.
M12 – M64 · ½" – 2½" · dai 40 – 2 000 mm
Stud bolts
Stud bolts · general arrangement
How we make it
- Thread rolled after heat treatment — a rolled root has a far longer fatigue life than a cut one
- Both ends chamfered 45° so the nut starts square and does not damage the first thread
- Heat number stamped on one end, matching the certificate
- Supplied as a set: one stud, two nuts, washers if specified
Available grades
B7-48 … 427 °C
ASTM A193 Grade B7
Chromium-molybdenum alloy steel (AISI 4140 / 4142 / 4145)
860MPa min
B7M-48 … 427 °C
ASTM A193 Grade B7M
Chromium-molybdenum alloy steel (AISI 4140 / 4142 / 4145)
690MPa min
B16-29 … 538 °C
ASTM A193 Grade B16
Chromium-molybdenum-vanadium alloy steel
860MPa min
L7-101 … 427 °C
ASTM A320 Grade L7
Chromium-molybdenum alloy steel (AISI 4140 / 4142 / 4145)
860MPa min
L7M-101 … 427 °C
ASTM A320 Grade L7M
Chromium-molybdenum alloy steel (AISI 4140 / 4142 / 4145)
690MPa min
B8M Cl.1-254 … 816 °C
ASTM A193 Grade B8M Class 1
Austenitic stainless steel, AISI 316
515MPa min
Need a quotation?
Send us the grade, size and quantity. We reply within one working day with price, lead time and the certificate package included.