DISTANCE FROM CENTERLINE TO FLAT | 0.260 INCHES MINIMUM AND 0.270 INCHES MAXIMUM |
FASTENER LENGTH | 1.250 INCHES MINIMUM AND 1.260 INCHES MAXIMUM |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD DIAMETER | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |
HEAD HEIGHT | 0.510 INCHES MINIMUM AND 0.520 INCHES MAXIMUM |
HEAD STYLE | DEE CHAMFER |
MATERIAL DOCUMENT AND CLASSIFICATION | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
MATERIAL | STEEL CORROSION RESISTING OVERALL |
NOMINAL THREAD DIAMETER | 0.438 INCHES |
SHOULDER DIAMETER | 0.5045 INCHES MINIMUM AND 0.5050 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER LENGTH | 0.575 INCHES NOMINAL FIRST SHOULDER |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.545 INCHES MINIMUM AND 0.555 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 20 |
THREAD SERIES DESIGNATOR | UNF |