EXTENDED WASHER DIAMETER | 0.423 INCHES MINIMUM AND 0.443 INCHES MAXIMUM |
EXTENDED WASHER THICKNESS | 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
FASTENER LENGTH | 0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM |
HARDNESS RATING | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
HEAD STYLE | DOUBLE HEXAGON W/HOLE |
MATERIAL | NICKEL ALLOY 718 OVERALL |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
NONSTANDARD THREAD PITCH DIAMETER | +0.2213 TO 0.2238 INCHES |
SHOULDER DIAMETER | 0.2804 INCHES MINIMUM AND 0.2807 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER LENGTH | 0.138 INCHES MINIMUM AND 0.168 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
WIDTH BETWEEN FLATS | 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | AMS 2403 ASSN STD 1ST TREATMENT RESPONSE OR +16-TE3E CL A FSCM 99207 MFR REF 2ND TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | NICKEL OR NICKEL AND PHOSPHATE OVERALL |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.350 INCHES MINIMUM AND 0.410 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 28 |
THREAD SERIES DESIGNATOR | UNF |