| MRC |
Requirement Statement |
Characteristics |
| AASB |
FASTENER LENGTH |
3.940 INCHES MINIMUM AND 4.000 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
HEXAGON |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
QQ-B-637,COMP 1 FED SPEC 1ST MATERIAL RESPONSE OVERALL OR QQ-B-637,COMP 4 FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| MATT |
MATERIAL |
COPPER ALLOY 464 OVERALL OR COPPER ALLOY 462 OVERALL |
| CQBC |
MINIMUM TENSILE STRENGTH |
60000 POUNDS PER SQUARE INCH |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AATB |
WIDTH BETWEEN FLATS |
0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
2A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
