| AATB |
WIDTH BETWEEN FLATS |
0.312 INCHES NOMINAL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| AATC |
EXTENDED WASHER DIAMETER |
0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
MIL-S-5000 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-5626 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL OR MIL-S-8503 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 6150 OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AASU |
HEAD HEIGHT |
0.300 INCHES NOMINAL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AAUR |
GRIP DIAMETER |
0.249 INCHES NOMINAL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AATD |
EXTENDED WASHER THICKNESS |
0.069 INCHES NOMINAL |
| AASA |
THREAD LENGTH |
0.762 INCHES NOMINAL |
| AASB |
FASTENER LENGTH |
1.137 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
39.0 ROCKWELL C MINIMUM OVERALL AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| ANEE |
GRIP LENGTH |
0.375 INCHES NOMINAL |
| AASK |
HEAD STYLE |
DOUBLE HEXAGON EXTENDED WASHER |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |