| Reference | Diameter | Thread | Length | Material | Description | Finish | Nmin | Tmin | E | D | ShortName | |
|---|
| 31C400HHD5Z | 31 | 5/16 | 4 | GRADE 5 | 5/16-18 X 4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31C400HHD5Z/US | 31 | 5/16 | 4 | GRADE 5 | 5/16-18 X 4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C400HHD8Y | 31 | 5/16 | 4 | GRADE 8 | 5/16-18 X 4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C400HHT2Z | 31 | 5/16 | 4 | GRADE 2 | 5/16-18 X 4 HEX TAP BOLT GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31F400HHD5Z | 31 | 5/16 | 4 | GRADE 5 | 5/16-24 X 4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31F400HHD5Z/US | 31 | 5/16 | 4 | GRADE 5 | 5/16-24 X 4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F400HHD8Y | 31 | 5/16 | 4 | GRADE 8 | 5/16-24 X 4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C450HHD2Z | 31 | 5/16 | 4 1/2 | GRADE 2 | 5/16-18 X 4 1/2 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C450HHD2Z/F | 31 | 5/16 | 4 1/2 | GRADE 2 | 5/16-18 X 4 1/2 HEX HD FULL THD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C450HHD5Z | 31 | 5/16 | 4 1/2 | GRADE 5 | 5/16-18 X 4 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31C450HHD5Z/US | 31 | 5/16 | 4 1/2 | GRADE 5 | 5/16-18 X 4 1/2 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C450HHD8Y | 31 | 5/16 | 4 1/2 | GRADE 8 | 5/16-18 X 4 1/2 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31F450HHD5Z | 31 | 5/16 | 4 1/2 | GRADE 5 | 5/16-24 X 4 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F450HHD8Y | 31 | 5/16 | 4 1/2 | GRADE 8 | 5/16-24 X 4 1/2 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C500HHD2Z/F | 31 | 5/16 | 5 | GRADE 2 | 5/16-18 X 5 HEX HD FULL THD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C500HHD5Z | 31 | 5/16 | 5 | GRADE 5 | 5/16-18 X 5 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C500HHD5Z/US | 31 | 5/16 | 5 | GRADE 5 | 5/16-18 X 5 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C500HHD8Y | 31 | 5/16 | 5 | GRADE 8 | 5/16-18 X 5 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31F500HHD5Z | 31 | 5/16 | 5 | GRADE 5 | 5/16-24 X 5 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31F500HHD5Z/US | 31 | 5/16 | 5 | GRADE 5 | 5/16-24 X 5 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C550HHD2Z/F | 31 | 5/16 | 5 1/2 | GRADE 2 | 5/16-18 X 5 1/2 HEX HD FULL THD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C550HHD5Z | 31 | 5/16 | 5 1/2 | GRADE 5 | 5/16-18 X 5 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31C550HHD5Z/US | 31 | 5/16 | 5 1/2 | GRADE 5 | 5/16-18 X 5 1/2 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C550HHD8Y | 31 | 5/16 | 5 1/2 | GRADE 8 | 5/16-18 X 5 1/2 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31F550HHD5Z | 31 | 5/16 | 5 1/2 | GRADE 5 | 5/16-24 X 5 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F575HHD5Z | 31 | 5/16 | 5 3/4 | GRADE 5 | 5/16-24 X 5 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C62HHD2B | 31 | 5/16 | 5/8 | GRADE 2 | 5/16-18 X 5/8 HEX HD GRADE 2 BLK (RoHS) | BLK (RoHS) | --- | --- | --- | --- | HHD2 |  |
| 31C62HHD2Z | 31 | 5/16 | 5/8 | GRADE 2 | 5/16-18 X 5/8 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C62HHD5Z | 31 | 5/16 | 5/8 | GRADE 5 | 5/16-18 X 5/8 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | **SEE/US** |  |
| 31C62HHD5Z/US | 31 | 5/16 | 5/8 | GRADE 5 | 5/16-18 X 5/8 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C62HHD8Y | 31 | 5/16 | 5/8 | GRADE 8 | 5/16-18 X 5/8 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C62HWH2Z/W | 31 | 5/16 | 5/8 | GRADE 2 | 5/16-18 X 5/8 HEX WASHER HD WHIZLOK GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31F62HHD5Z | 31 | 5/16 | 5/8 | GRADE 5 | 5/16-24 X 5/8 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F62HHD8Y | 31 | 5/16 | 5/8 | GRADE 8 | 5/16-24 X 5/8 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C600HHD2Z | 31 | 5/16 | 6 | GRADE 2 | 5/16-18 X 6 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C600HHD5Z | 31 | 5/16 | 6 | GRADE 5 | 5/16-18 X 6 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C600HHD8Y | 31 | 5/16 | 6 | GRADE 8 | 5/16-18 X 6 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C600HHT2Z | 31 | 5/16 | 6 | GRADE 2 | 5/16-18 X 6 HEX TAP BOLT GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31F600HHD5Z | 31 | 5/16 | 6 | GRADE 5 | 5/16-24 X 6 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31F600HHD5Z/US | 31 | 5/16 | 6 | GRADE 5 | 5/16-24 X 6 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F600HHD8Z | 31 | 5/16 | 6 | GRADE 8 | 5/16-24 X 6 HEX HD GRADE 8 ZN | ZN | --- | --- | --- | --- | HHD8 |  |
| 31C650HHD2Z | 31 | 5/16 | 6 1/2 | GRADE 2 | 5/16-18 X 6 1/2 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C650HHD5Z | 31 | 5/16 | 6 1/2 | GRADE 5 | 5/16-18 X 6 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C650HHD8P | 31 | 5/16 | 6 1/2 | GRADE 8 | 5/16-18 X 6 1/2 HEX HD GRADE 8 PLN | PLN | --- | --- | --- | --- | HHD8 |  |
| 31C700HHD5Z | 31 | 5/16 | 7 | GRADE 5 | 5/16-18 X 7 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C43SIH2Z | 31 | 5/16 | 7/16 | GRADE 2 | 5/16-18 X 7/16 SLOT IND HX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C87HHD2Z | 31 | 5/16 | 7/8 | GRADE 2 | 5/16-18 X 7/8 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C87HHD5R | 31 | 5/16 | 7/8 | GRADE 5 | 5/16-18 X 7/8 HEX HD GRADE 5 ZN CR3 | ZN CR3 | --- | --- | --- | --- | HHD5 |  |
| 31C87HHD5Z | 31 | 5/16 | 7/8 | GRADE 5 | 5/16-18 X 7/8 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* |  |
| 31C87HHD5Z/US | 31 | 5/16 | 7/8 | GRADE 5 | 5/16-18 X 7/8 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31C87HWH2Z/W | 31 | 5/16 | 7/8 | GRADE 2 | 5/16-18 X 7/8 HEX WASHER HD WHIZLOK GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31F87HHD8Y | 31 | 5/16 | 7/8 | GRADE 8 | 5/16-24 X 7/8 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 |  |
| 31C800HHD2Z | 31 | 5/16 | 8 | GRADE 2 | 5/16-18 X 8 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 31C800HHD8P | 31 | 5/16 | 8 | GRADE 8 | 5/16-18 X 8 HEX HD GRADE 8 PLN | PLN | --- | --- | --- | --- | HHD8 |  |
| 37C100HHD2P | 37 | 3/8 | 1 | GRADE 2 | 3/8-16 X 1 HEX HD GRADE 2 PLN | PLN | --- | --- | --- | --- | HHD2 |  |
| 37C100HHD2R | 37 | 3/8 | 1 | GRADE 2 | 3/8-16 X 1 HEX HD GRADE 2 ZN CR3 | ZN CR3 | --- | --- | --- | --- | HHD2 |  |
| 37C100HHD2Z | 37 | 3/8 | 1 | GRADE 2 | 3/8-16 X 1 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 |  |
| 37C100HHD5/B | 37 | 3/8 | 1 | GRADE 5 | 3/8-16 X 1 HEX HD BLACK ZINC GRADE 5 | --- | --- | --- | --- | --- | HHD5/B |  |
| 37C100HHD5P/LH | 37 | 3/8 | 1 | GRADE 5 | 3/8-16 X 1 HEX HD LEFT HAND GRADE 5 PLN | PLN | --- | --- | --- | --- | HHD5 |  |
| 37C100HHD5R | 37 | 3/8 | 1 | GRADE 5 | 3/8-16 X 1 HEX HD GRADE 5 ZN CR3 | ZN CR3 | --- | --- | --- | --- | HHD5 |  |