FASTENER LENGTH | 1.629 INCHES MINIMUM AND 1.669 INCHES MAXIMUM |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.265 INCHES MINIMUM AND 0.297 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
MATERIAL | STEEL COMP 4140 OR STEEL COMP 8740 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 4130 OR STEEL COMP 4037 OVERALL |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 0.438 INCHES |
SHOULDER LENGTH | 1.010 INCHES MINIMUM AND 1.030 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER DIAMETER | 0.495 INCHES MINIMUM AND 0.499 INCHES MAXIMUM FIRST SHOULDER |
SPECIFICATION/STANDARD DATA | 80205-NAS1297 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
WIDTH BETWEEN FLATS | 0.740 INCHES MINIMUM AND 0.752 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY2CL2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.629 INCHES NOMINAL |
THREAD SERIES DESIGNATOR | UNJF |
THREAD QUANTITY PER INCH | 20 |