| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM PRIMARY WASHER |
| HEAD DIAMETER | 0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM |
| HEAD HEIGHT | 0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| NOMINAL THREAD DIAMETER | 0.112 INCHES |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| PRIMARY WASHER MATERIAL THICKNESS | 0.020 INCHES MINIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.171 INCHES MINIMUM AND 0.184 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.660 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 40 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |