| COUNTERSINK ANGLE | 81.0 DEGREES NOMINAL81.0 DEGREES NOMINAL |
| FASTENER LENGTH | 3.250 INCHES NOMINAL3.250 INCHES NOMINAL |
| HEAD DIAMETER | 1.594 INCHES MINIMUM AND 1.594 INCHES MINIMUM AND 1.700 INCHES MAXIMUM1.700 INCHES MAXIMUM |
| HEAD STYLE | FLAT COUNTERSUNKFLAT COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL OVERALL |
| NECK WIDTH | 1.000 INCHES MINIMUM AND 1.000 INCHES MINIMUM AND 1.031 INCHES MAXIMUM1.031 INCHES MAXIMUM |
| NOMINAL THREAD DIAMETER | 1.000 INCHES1.000 INCHES |
| THREAD CLASS | 2A2A |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 2.000 INCHES MINIMUM2.000 INCHES MINIMUM |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL COARSE (UNC) |
| THREAD QUANTITY PER INCH | 88 |