| Standard | Material Type &Grade | Normal Size | Screw Thread | Hardness | |
| ANSI/ASME B 18.2.2 ANSI/ASME B18.2.4.6M ANSI/ASME B18.2.4.1M |
A194 | 2HM | 1/4(M6)~2-1/4(M56) according to order |
ASME/ANSI B 1.1 ASME/ANSI B 1.13M |
HB159~HB235 |
| 2H | HB248~HB327 | ||||
| 4 | HB248~HB327 | ||||
| 7 | |||||
| 8/8M | HB126~HB300 | ||||
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