Class A/B/C/D
ASTM A453 Grade 660 Stud Bolts Class A, B, C & D offered at TorqBolt are manufactured in accordance with DIN 975, 976, 938, 939, 2510, 525, 2509, BS 2693, 3692, 4439, BS 4168, ASME B16.5, B18.31.2, B18.31.1M standards in metric and imperial coarse and fine thread sizes with UNC, UN, UNF, UNEF, UNJF & ISO threads.
Imperial Range : 5/16" - 5"
Metric Range : M6 - M125
The lenght of the stud bolts, measured parallel to axis, is the distance from first thread to first thread. First thread is defined as the intersection of the major diameter of the thread with the base of the point.
The lenght of the stud bolts, measured parallel to axis, is the distance from each stud bolt, including the point.
| Length inch | Length inch | Tolerance mm |
|---|---|---|
| to 12 | ± 0,052 | ± 1,3208 |
| over 12 to 18 | ± 0,125 | ± 3,175 |
| over 18 | ± 0,250 | ± 6,35 |
| Nominal size or diameter | ||
|---|---|---|
| INCH SERIES | 1” and smaller UNIFIED COARSE THREAD SERIES CLASS 2A ASME B1.1 | 1 1/8” and larger UNIFIED 8 THREAD SERIES CLASS 2A ASME B1.1 |
| METRIC SERIES | M33 and smaller METRIC COARSE THREAD SERIES CLASS 6g ISO 68 / ISO 965 | M36 and larger METRIC FINE AND COARSE PITCH THREADS CLASS 6g ISO 68 / ISO 965 |
| Studs | DIN | BS | ASME | IS | |
|---|---|---|---|---|---|
| Metric | Imperial | ||||
| Full Thread Studs | - | - | B16.5 | B16.5 | - |
| Flange Bolting Stud | - | - | B16.5 | B16.5 | - |
| Continuous Thread Stud Bolts | - | - | B18.31.1M | B18.31.2 | - |
| Plain End Stud Bolts | 975 / 976 | - | - | - | - |
| Double End Stud Bolts | 938 / 939 / 940 / 949 / 835 / 2510 / 2509 | 2693 / 3692 / 4439 | - | - | 1862 |
| Welding Studs | 525 | - | - | - | - |
| Clamping Type Studs | - | - | B18.31.1M | 13178 | |
| Tap End Studs | - | - | B18.31.1M | - | - |
