| MRC |
Requirement Statement |
Characteristics |
| CRSQ |
COUNTERSINK ANGLE |
15.0 DEGREES MINIMUM AND 30.0 DEGREES MAXIMUM |
| AASB |
FASTENER LENGTH |
3.306 INCHES MINIMUM AND 3.413 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
HEXAGON |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
SAE J429 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| MATT |
MATERIAL |
STEEL OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AATB |
WIDTH BETWEEN FLATS |
0.428 INCHES MINIMUM AND 0.4375 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL |
| AAJD |
THREAD CLASS |
2A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
1.720 INCHES MINIMUM AND 1.780 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
