| FASTENER LENGTH | 0.750 INCHES NOMINAL |
| HEAD DIAMETER | 0.407 INCHES MINIMUM AND 0.425 INCHES MAXIMUM |
| HEAD HEIGHT | 0.139 INCHES MINIMUM AND 0.151 INCHES MAXIMUM |
| HEAD STYLE | PAN |
| INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| MATERIAL DOCUMENT AND CLASSIFICATION | GM 275-M,FSCM 21450 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.216 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.020 INCHES MINIMUM AND 0.025 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.396 INCHES MINIMUM AND 0.408 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | FLAT INTERNAL TEETH |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD CLASS | 2A |
| THREAD LENGTH | 0.667 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 24 |