| THREAD SERIES DESIGNATOR | M |
| NOMINAL THREAD DIAMETER | 0.164 INCHES |
| THREAD QUANTITY PER INCH | 32.0 |
| NONSTANDARD THREAD PITCH DIAMETER | 0.1437 TO 0.1475 INCHES |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.3520 MILLIMETERS NOMINAL |
| FASTENER LENGTH | 0.3520 MILLIMETERS NOMINAL |
| MATERIAL | STEEL OVERALL |
| SURFACE TREATMENT | ZINC OVERALL |
| HEAD STYLE | HEXAGON EXTENDED WASHER |
| HEAD HEIGHT | 0.133 MILLIMETERS NOMINAL |
| WIDTH BETWEEN FLATS | 0.250 MILLIMETERS NOMINAL |
| EXTENDED WASHER DIAMETER | 0.317 MILLIMETERS NOMINAL |
| EXTENDED WASHER THICKNESS | 0.023 MILLIMETERS NOMINAL |
| INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| WASHER QUANTITY | 1 |
| PRIMARY WASHER STYLE | FLAT EXTERNAL TEETH |
| PRIMARY WASHER OUTSIDE DIAMETER | 0.317 INCHES NOMINAL |
| PRIMARY WASHER MATERIAL THICKNESS | 0.023 INCHES NOMINAL |