FASTENER LENGTH | 0.395 INCHES MINIMUM AND 0.435 INCHES MAXIMUM |
HARDNESS RATING | 45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM FASTENER |
HEAD DIAMETER | 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
HEAD HEIGHT | 0.100 INCHES MINIMUM AND 0.130 INCHES MAXIMUM |
HEAD STYLE | FLAT CHAMFER |
INTERNAL DRIVE STYLE | HEXAGON |
LOCKING FEATURE | STRIP THREADS |
MATERIAL | PLASTIC POLYAMIDE LOCKING FEATURESTEEL COMP 4037 OR STEEL COMP 4137 OR STEEL COMP 8630 OR STEEL COMP 8740 FASTENER |
NOMINAL THREAD DIAMETER | 0.500 INCHES |
POINT LENGTH | 0.030 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |
POINT STYLE | CHAMFER DOG |
POINT CHAMFER ANGLE | 40.0 DEGREES MINIMUM AND 50.0 DEGREES MAXIMUM |
POINT DIAMETER | 0.320 INCHES MINIMUM AND 0.325 INCHES MAXIMUM |
WIDTH ACROSS FLATS | 0.250 INCHES NOMINAL |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE FASTENER |
SURFACE TREATMENT | CADMIUM AND CHROMATE FASTENER |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.295 INCHES MINIMUM AND 0.305 INCHES MAXIMUM |
THREAD SERIES DESIGNATOR | UNF |
THREAD QUANTITY PER INCH | 20 |