| MATERIAL | STEEL COMP 4140 OR |
| STEEL COMP 4340 |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR |
| ASTM 331 ASSN STD ALL MATERIAL RESPONSES |
| SURFACE TREATMENT | CADMIUM AND |
| CHROMATE UNDERCUTS |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE UNDERCUTS |
| LENGTH OF RECESSED PORTION OF SHANK | 0.231 INCHES NOMINAL |
| DIAMETER OF RECESSED PORTION OF SHANK | 0.399 INCHES NOMINAL |
| OVERALL LENGTH | 2.260 INCHES NOMINAL |
| THREAD SERIES DESIGNATOR | UNC NUT THREAD |
| UNF STUD THREAD |
| NOMINAL THREAD SIZE | 0.500 INCHES NUT THREAD |
| 0.625 INCHES STUD THREAD |
| THREAD CLASS | 2A NUT THREAD |
| 2A STUD THREAD |
| THREAD QUANTITY PER INCH | 13 NUT THREAD |
| 18 STUD THREAD |
| THREAD DIRECTION | RIGHT-HAND NUT THREAD |
| RIGHT-HAND STUD THREAD |
| THREAD LENGTH | 0.750 INCHES MINIMUM NUT THREAD |
| 0.810 INCHES NOMINAL STUD THREAD |
| SPECIAL FEATURES | EXTERNAL WRENCHING DEVICE ON NUT END; 0.369 IN. MIN AND 0.375 IN. MAX SQUARE,0.380 IN. LG |