EXTENDED WASHER DIAMETER | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
EXTENDED WASHER THICKNESS | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
FASTENER LENGTH | 0.830 INCHES MINIMUM AND 0.850 INCHES MAXIMUM |
HEAD HEIGHT | 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
HEAD STYLE | DOUBLE HEXAGON W/HOLE |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | IRON ALLOY 660 OVERALL |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
PART NAME ASSIGNED BY CONTROLLING AGENCY | NAVY SPECIAL PROJECT |
SHOULDER DIAMETER | 0.3000 INCHES MINIMUM AND 0.3005 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER LENGTH | 0.348 INCHES MINIMUM AND 0.368 INCHES MAXIMUM FIRST SHOULDER |
WIDTH BETWEEN FLATS | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | PWA 830 FSCM 77445 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | PASSIVATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.390 INCHES MINIMUM AND 0.450 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 28 |
THREAD SERIES DESIGNATOR | UNJF |