| THREAD SERIES DESIGNATOR | UNC |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32 |
| THREAD CLASS | 3A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.750 INCHES MAXIMUM |
| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| MATERIAL | STEEL COMP 4340 OR |
| STEEL COMP 8630 OR |
| STEEL COMP 8740 OR |
| STEEL COMP 2340 OR |
| STEEL COMP 3135 OR |
| STEEL COMP 4037 OR |
| STEEL COMP 4140 OVERALL |
| MATERIAL DOCUMENT AND CLASSIFICATION | QQ-S-624 FED SPEC 1ST MATERIAL RESPONSE OR |
| QQ-S-624 FED SPEC 2ND MATERIAL RESPONSE OR |
| QQ-S-624 FED SPEC 3RD MATERIAL RESPONSE OR |
| SAE ASSN STD 4TH MATERIAL RESPONSE OR |
| SAE ASSN STD 5TH MATERIAL RESPONSE OR |
| QQ-S-624 FED SPEC 6TH MATERIAL RESPONSE OR |
| QQ-S-624 FED SPEC 7TH MATERIAL RESPONSE OR |
| SAE ASSN STD 8TH MATERIAL RESPONSE OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND |
| 53.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD STYLE | HEADLESS (SETSCREW) |
| INTERNAL DRIVE STYLE | HEXAGON |
| WIDTH ACROSS FLATS | 0.078 INCHES MINIMUM AND |
| 0.079 INCHES MAXIMUM |
| POINT STYLE | CUP |
| FEATURES PROVIDED | CASEHARDENED |