DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.493 INCHES MINIMUM AND 1.503 INCHES MAXIMUM FIRST HOLE |
FASTENER LENGTH | 1.600 INCHES MINIMUM AND 1.640 INCHES MAXIMUM |
HEAD DIAMETER | 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |
HEAD HEIGHT | 0.190 INCHES MINIMUM AND 0.210 INCHES MAXIMUM |
HEAD STYLE | FLAT CHAMFER |
INTERNAL DRIVE STYLE | SLOT |
MATERIAL | STEEL COMP 631 OVERALL |
MINIMUM TENSILE STRENGTH | 220000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
SHANK UNTHREADED HOLE DIAMETER | 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM FIRST HOLE |
SHOULDER DIAMETER | 0.3095 INCHES MINIMUM AND 0.3110 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER LENGTH | 1.213 INCHES MINIMUM AND 1.223 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | HRPS161,FSCM 81873 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | PASSIVATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.377 INCHES MINIMUM AND 0.427 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 28 |
THREAD SERIES DESIGNATOR | UNF |