| FASTENER LENGTH | 1.563 INCHES MINIMUM AND 1.625 INCHES MAXIMUM |
| HEAD HEIGHT | 0.319 INCHES MINIMUM AND 0.338 INCHES MAXIMUM |
| HEAD STYLE | HEXAGON |
| MATERIAL DOCUMENT AND CLASSIFICATION | G-300-23862 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NOMINAL THREAD DIAMETER | 0.437 INCHES |
| NONSTANDARD THREAD PITCH DIAMETER | +0.3862 TO 0.3901 INCHES |
| SHOULDER DIAMETER | 0.4480 INCHES MINIMUM AND 0.4490 INCHES MAXIMUM FIRST SHOULDER |
| SHOULDER SHAPE | ROUND FIRST SHOULDER |
| SHOULDER LENGTH | 0.781 INCHES MINIMUM AND 0.812 INCHES MAXIMUM FIRST SHOULDER |
| WIDTH BETWEEN FLATS | 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM |
| SURFACE TREATMENT | CADMIUM OR ZINC OVERALL |
| THREAD DIRECTION | RIGHT-HAND |
| THREAD LENGTH | 0.751 INCHES MINIMUM AND 0.844 INCHES MAXIMUM |
| THREAD QUANTITY PER INCH | 14 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |