| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.060 INCHES MINIMUM AND 0.120 INCHES MAXIMUM |
| FASTENER LENGTH | 3.541 INCHES MINIMUM AND 3.601 INCHES MAXIMUM |
| HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 46.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.310 INCHES NOMINAL |
| HEAD DIAMETER | 1.310 INCHES NOMINAL |
| HEAD STYLE | FLAT CHAMFER |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A322 ASSN STD ALL MATERIAL RESPONSES OR ASTM A331 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| MATERIAL | STEEL COMP 8637 OR STEEL COMP 8640 OVERALL |
| NOMINAL THREAD DIAMETER | 0.875 INCHES |
| SHOULDER LENGTH | 1.160 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| RIB LENGTH | 1.040 INCHES MINIMUM AND 1.100 INCHES MAXIMUM |
| RIB MAJOR DIAMETER | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM |
| RIB MINOR DIAMETER | 0.880 INCHES MINIMUM AND 0.930 INCHES MAXIMUM |
| RIB QUANTITY | 28 |
| SHOULDER DIAMETER | 0.995 INCHES MINIMUM AND 1.005 INCHES MAXIMUM FIRST SHOULDER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.200 INCHES MINIMUM AND 1.300 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNF |
| THREAD QUANTITY PER INCH | 14 |