| Reference | Diameter | Thread | Length | Material | Description | Finish | Nmin | Tmin | E | D | ShortName | |
|---|
| 31F250HHD5Z/US | 31 | 5/16 | 2 1/2 | GRADE 5 | 5/16-24 X 2 1/2 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 |  |
| 31F250HHD8Y | 31 | 5/16 | 2 1/2 | GRADE 8 | 5/16-24 X 2 1/2 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C225HHD2Y | 31 | 5/16 | 2 1/4 | GRADE 2 | 5/16-18 X 2 1/4 HEX HD GRADE 2 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD2 | |
| 31C225HHD2Z | 31 | 5/16 | 2 1/4 | GRADE 2 | 5/16-18 X 2 1/4 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C225HHD5Z | 31 | 5/16 | 2 1/4 | GRADE 5 | 5/16-18 X 2 1/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C225HHD5Z/US | 31 | 5/16 | 2 1/4 | GRADE 5 | 5/16-18 X 2 1/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C225HHD8Y | 31 | 5/16 | 2 1/4 | GRADE 8 | 5/16-18 X 2 1/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31F225HHD5P | 31 | 5/16 | 2 1/4 | GRADE 5 | 5/16-24 X 2 1/4 HEX HD GRADE 5 PLN | PLN | --- | --- | --- | --- | HHD5 | |
| 31F225HHD5Z/US | 31 | 5/16 | 2 1/4 | GRADE 5 | 5/16-24 X 2 1/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31F225HHD8Y | 31 | 5/16 | 2 1/4 | GRADE 8 | 5/16-24 X 2 1/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C275HHD2Z | 31 | 5/16 | 2 3/4 | GRADE 2 | 5/16-18 X 2 3/4 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C275HHD5Z | 31 | 5/16 | 2 3/4 | GRADE 5 | 5/16-18 X 2 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C275HHD5Z/US | 31 | 5/16 | 2 3/4 | GRADE 5 | 5/16-18 X 2 3/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C275HHD8Y | 31 | 5/16 | 2 3/4 | GRADE 8 | 5/16-18 X 2 3/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31F275HHD5Z | 31 | 5/16 | 2 3/4 | GRADE 5 | 5/16-24 X 2 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31F275HHD8Y | 31 | 5/16 | 2 3/4 | GRADE 8 | 5/16-24 X 2 3/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C300HHD2Z | 31 | 5/16 | 3 | GRADE 2 | 5/16-18 X 3 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C300HHD5Z | 31 | 5/16 | 3 | GRADE 5 | 5/16-18 X 3 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C300HHD5Z/US | 31 | 5/16 | 3 | GRADE 5 | 5/16-18 X 3 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C300HHD8Y | 31 | 5/16 | 3 | GRADE 8 | 5/16-18 X 3 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C300HHT2Z | 31 | 5/16 | 3 | GRADE 2 | 5/16-18 X 3 HEX TAP BOLT GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C300HHT5Z | 31 | 5/16 | 3 | GRADE 5 | 5/16-18 X 3 HEX TAP BOLT GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C300SQB2P | 31 | 5/16 | 3 | GRADE 2 | 5/16-18 X 3 SQUARE HEAD BOLT GRADE 2 PLN | PLN | --- | --- | --- | --- | HHD2 | |
| 31F300HHD5Z | 31 | 5/16 | 3 | GRADE 5 | 5/16-24 X 3 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31F300HHD8Y | 31 | 5/16 | 3 | GRADE 8 | 5/16-24 X 3 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C350HHD2Z | 31 | 5/16 | 3 1/2 | GRADE 2 | 5/16-18 X 3 1/2 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C350HHD5P | 31 | 5/16 | 3 1/2 | GRADE 5 | 5/16-18 X 3 1/2 HEX HD GRADE 5 PLN | PLN | --- | --- | --- | --- | HHD5 | |
| 31C350HHD5Z | 31 | 5/16 | 3 1/2 | GRADE 5 | 5/16-18 X 3 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* | |
| 31C350HHD5Z/US | 31 | 5/16 | 3 1/2 | GRADE 5 | 5/16-18 X 3 1/2 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C350HHT2Z | 31 | 5/16 | 3 1/2 | GRADE 2 | 5/16-18 X 3 1/2 HEX TAP BOLT GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C350HHT8Y | 31 | 5/16 | 3 1/2 | GRADE 8 | 5/16-18 X 3 1/2 HEX TAP BOLT GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C350SQB2P | 31 | 5/16 | 3 1/2 | GRADE 2 | 5/16-18 X 3 1/2 SQUARE HEAD BOLT GRADE 2 PLN | PLN | --- | --- | --- | --- | HHD2 | |
| 31F350HHD5Z | 31 | 5/16 | 3 1/2 | GRADE 5 | 5/16-24 X 3 1/2 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31F350HHD8Y | 31 | 5/16 | 3 1/2 | GRADE 8 | 5/16-24 X 3 1/2 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C325HHD5Z | 31 | 5/16 | 3 1/4 | GRADE 5 | 5/16-18 X 3 1/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C325HHD5Z/US | 31 | 5/16 | 3 1/4 | GRADE 5 | 5/16-18 X 3 1/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C325HWH2Z/W | 31 | 5/16 | 3 1/4 | GRADE 2 | 5/16-18 X 3 1/4 HEX WASHER HD WHIZLOK GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31F325HHD5Y | 31 | 5/16 | 3 1/4 | GRADE 5 | 5/16-24 X 3 1/4 HEX HD GRADE 5 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD5 | |
| 31F325HHD5Z | 31 | 5/16 | 3 1/4 | GRADE 5 | 5/16-24 X 3 1/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C375HHD5Z | 31 | 5/16 | 3 3/4 | GRADE 5 | 5/16-18 X 3 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C75HHD2B | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD GRADE 2 BLK (RoHS) | BLK (RoHS) | --- | --- | --- | --- | HHD2 | |
| 31C75HHD2N | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD GRADE 2 NCKL | NCKL | --- | --- | --- | --- | HHD2 | |
| 31C75HHD2P | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD GRADE 2 PLN | PLN | --- | --- | --- | --- | HHD2 | |
| 31C75HHD2R | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD GRADE 2 ZN CR3 | ZN CR3 | --- | --- | --- | --- | HHD2 | |
| 31C75HHD2Z | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31C75HHD2Z/L | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX HD STRIP-LOK GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD | |
| 31C75HHD5B | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-18 X 3/4 HEX HD GRADE 5 BLK (RoHS) | BLK (RoHS) | --- | --- | --- | --- | HHD5 | |
| 31C75HHD5R | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-18 X 3/4 HEX HD GRADE 5 ZN CR3 | ZN CR3 | --- | --- | --- | --- | HHD5 | |
| 31C75HHD5Z | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-18 X 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | **SEE/US** | |
| 31C75HHD5Z/US | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-18 X 3/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31C75HHD8Y | 31 | 5/16 | 3/4 | GRADE 8 | 5/16-18 X 3/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31C75HHDZN | 31 | 5/16 | 3/4 | STL | 5/16-18 X 3/4 HEX HD STL NCKL | NCKL | --- | --- | --- | --- | HHD2 | |
| 31C75HHDZP/A449 | 31 | 5/16 | 3/4 | STL | 5/16-18 X 3/4 HEX HD ASTM A449 STL PLN | PLN | --- | --- | --- | --- | HHD5 | |
| 31C75HWH2Z/W | 31 | 5/16 | 3/4 | GRADE 2 | 5/16-18 X 3/4 HEX WASHER HD WHIZLOK GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |
| 31F75HHD5Z | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-24 X 3/4 HEX HD GRADE 5 ZN | ZN | --- | --- | --- | --- | *SEE/US* | |
| 31F75HHD5Z/US | 31 | 5/16 | 3/4 | GRADE 5 | 5/16-24 X 3/4 HEX HD "U.S.MADE" GRADE 5 ZN | ZN | --- | --- | --- | --- | HHD5 | |
| 31F75HHD8B | 31 | 5/16 | 3/4 | GRADE 8 | 5/16-24 X 3/4 HEX HD GRADE 8 BLK (RoHS) | BLK (RoHS) | --- | --- | --- | --- | HHD8 | |
| 31F75HHD8Y | 31 | 5/16 | 3/4 | GRADE 8 | 5/16-24 X 3/4 HEX HD GRADE 8 ZC YLW | ZC YLW | --- | --- | --- | --- | HHD8 | |
| 31N75FLWT | 31 | 5/16" | 3/4 | TITANIUM | 5/16" X 3/4 FLAT WASHER TITANIUM | --- | --- | --- | --- | --- | HHDT | |
| 31C400HHD2Z | 31 | 5/16 | 4 | GRADE 2 | 5/16-18 X 4 HEX HD GRADE 2 ZN | ZN | --- | --- | --- | --- | HHD2 | |