FASTENER LENGTH | 1.953 INCHES MINIMUM AND 1.993 INCHES MAXIMUM |
HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
HEAD HEIGHT | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
HEAD STYLE | HEXAGON |
HOLE CONFIGURATION STYLE | HEXAGON FLATS |
HOLE DIAMETER | 0.070 INCHES NOMINAL |
HOLE TYPE | DRILLED |
HOLE QUANTITY | 1 |
MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-6812 MIL SPEC ALL MATERIAL RESPONSES OVERALL |
MATERIAL | STEEL COMP 4037 OR STEEL COMP 4130 OR STEEL COMP 8630 OR STEEL COMP 8735 OR STEEL COMP 8740 OR STEEL COMP 4140 OVERALL |
MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
NOMINAL THREAD DIAMETER | 0.250 INCHES |
SHOULDER SHAPE | ROUND FIRST SHOULDER |
SHOULDER DIAMETER | 0.309 INCHES MINIMUM AND 0.312 INCHES MAXIMUM FIRST SHOULDER |
SHOULDER LENGTH | 1.510 INCHES MINIMUM AND 1.530 INCHES MAXIMUM FIRST SHOULDER |
WIDTH BETWEEN FLATS | 0.490 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 2,CL 3 ASSN STD 1ST TREATMENT RESPONSE OVERALL |
SURFACE TREATMENT | CADMIUM AND CHROMATE OVERALL |
THREAD CLASS | 3A |
THREAD DIRECTION | RIGHT-HAND |
THREAD LENGTH | 0.423 INCHES MINIMUM AND 0.483 INCHES MAXIMUM |
THREAD QUANTITY PER INCH | 28 |
THREAD SERIES DESIGNATOR | UNJF |