| DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 4.593 INCHES NOMINAL FIRST HOLE |
| DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS | 0.125 INCHES NOMINAL |
| FASTENER LENGTH | 4.812 INCHES NOMINAL |
| HARDNESS RATING | 30.0 ROCKWELL C MINIMUM AND 35.0 ROCKWELL C MAXIMUM OVERALL |
| HEAD HEIGHT | 0.375 INCHES NOMINAL |
| HEAD DIAMETER | 1.875 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 8640 OR STEEL COMP 4140 OR STEEL COMP 3140 OVERALL |
| NOMINAL THREAD DIAMETER | 1.000 INCHES |
| RIB LENGTH | 1.125 INCHES NOMINAL |
| RIB MAJOR DIAMETER | 1.130 INCHES MINIMUM AND 1.135 INCHES MAXIMUM |
| RIB QUANTITY | 72 |
| SHANK UNTHREADED HOLE DIAMETER | 0.203 INCHES MINIMUM AND 0.213 INCHES MAXIMUM FIRST HOLE |
| SHOULDER DIAMETER | 1.122 INCHES MINIMUM AND 1.123 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER LENGTH | 3.578 INCHES NOMINAL FIRST SHOULDER |
| SHOULDER SHAPE | RIBBED FIRST SHOULDER |
| SPECIAL FEATURES | HEAD END DRILLED PARRALLEL TO AXIS 1.125 IN. DEEP 1/12 IN.-20 UNF CL 2B THD 0.875 IN. LG |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 1 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 1.125 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNS |
| THREAD QUANTITY PER INCH | 14 |