| COUNTERSINK ANGLE | 99.5 DEGREES MINIMUM AND 99.5 DEGREES MINIMUM AND 100.5 DEGREES MAXIMUM100.5 DEGREES MAXIMUM |
| FASTENER LENGTH | 0.989 INCHES NOMINAL0.989 INCHES NOMINAL |
| HEAD DIAMETER | 0.592 INCHES NOMINAL0.592 INCHES NOMINAL |
| HEAD STYLE | FLAT COUNTERSUNKFLAT COUNTERSUNK |
| MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD DIAMETER | 0.2500 INCHES0.2500 INCHES |
| SPECIAL FEATURES | ITEM USED AS PANEL FASTENERITEM USED AS PANEL FASTENER |
| SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SURFACE TREATMENT | PASSIVATE OVERALL |
| THREAD CLASS | 3B3B |
| THREAD DIRECTION | RIGHT-HANDRIGHT-HAND |
| THREAD LENGTH | 0.460 INCHES NOMINAL0.460 INCHES NOMINAL |
| THREAD QUANTITY PER INCH | 2828 |
| THREAD SERIES DESIGNATOR | UNIFIED NATIONAL JOINT FINE (UNJF) |