THREAD SERIES DESIGNATOR | UNF |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
THREAD QUANTITY PER INCH | 28 |
THREAD CLASS | 2A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.600 INCHES NOMINAL |
FASTENER LENGTH | 0.787 INCHES NOMINAL |
MATERIAL | STEEL COMP 301 OR |
| STEEL COMP 302 SECONDARY WASHER |
| STEEL CORROSION RESISTING PRIMARY WASHER |
| STEEL COMP 302 SPRING |
| STEEL CORROSION RESISTING STAND-OFF |
| STEEL CORROSION RESISTING FASTENER |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5059 MIL SPEC SINGLE MATERIAL RESPONSE SECONDARY WASHER |
| FF-W-84 FED STD SINGLE MATERIAL RESPONSE PRIMARY WASHER |
| QQ-W-423 FED SPEC SINGLE MATERIAL RESPONSE SPRING |
| QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE STAND-OFF |
| AMS5629 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
MINIMUM TENSILE STRENGTH | 175000 POUNDS PER SQUARE INCH |
HEAD STYLE | HEXAGON |
HEAD HEIGHT | 0.172 INCHES MINIMUM AND |
| 0.190 INCHES MAXIMUM |
WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND |
| 0.375 INCHES MAXIMUM |
INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
MATERIAL ACCOMMODATED THICKNESS | 0.625 INCHES NOMINAL |
SPECIAL FEATURES | APPLY SOLID FILM LUBRICANT TO SCREW THREADS ONLY I/A/W MIL-L-6937 |