| FASTENER LENGTH | 0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM |
| HEAD DIAMETER | 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
| HEAD HEIGHT | 0.126 INCHES MINIMUM AND 0.156 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES FASTENER |
| MATERIAL DOCUMENT AND CLASSIFICATION | 66 FED STD ALL MATERIAL RESPONSES PRIMARY WASHER |
| MATERIAL | STEEL COMP 1008 OR STEEL COMP 1018 FASTENER |
| MATERIAL | STEEL COMP 1008 OR STEEL COMP 1018 PRIMARY WASHER |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| PRIMARY WASHER MATERIAL THICKNESS | 0.031 INCHES MINIMUM AND 0.041 INCHES MAXIMUM |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.257 INCHES MAXIMUM |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT | ZINC OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD SERIES DESIGNATOR | UNC |
| THREAD QUANTITY PER INCH | 32 |