| FASTENER LENGTH | 0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| HEAD DIAMETER | 0.208 INCHES MINIMUM AND 0.226 INCHES MAXIMUM |
| HEAD HEIGHT | 0.086 INCHES MINIMUM AND 0.096 INCHES MAXIMUM |
| HEAD STYLE | FILLISTER |
| INTERNAL DRIVE STYLE | SLOT |
| MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A575 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A576 ASSN STD 1ST MATERIAL RESPONSE OR ASTM A108 ASSN STD 1ST MATERIAL RESPONSE OR MIL-S-11310 MIL SPEC 2ND MATERIAL RESPONSE FASTENER |
| MATERIAL | STEEL COMP 1020 OR STEEL COMP 1010 FASTENER |
| MATERIAL | STEEL PRIMARY WASHER |
| NOMINAL THREAD DIAMETER | 0.138 INCHES |
| PRIMARY WASHER STYLE | SPLIT HELICAL RING |
| PRIMARY WASHER MATERIAL THICKNESS | 0.031 INCHES NOMINAL |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.218 INCHES MINIMUM AND 0.231 INCHES MAXIMUM |
| WASHER QUANTITY | 1 |
| SURFACE TREATMENT | CADMIUM AND DICHROMATE OVERALL |
| THREAD CLASS | 2A |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.312 INCHES MINIMUM |
| THREAD QUANTITY PER INCH | 32 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |