| MRC |
Requirement Statement |
Characteristics |
| CRSQ |
COUNTERSINK ANGLE |
114.0 DEGREES NOMINAL |
| AASB |
FASTENER LENGTH |
2.500 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
79.0 ROCKWELL B MINIMUM OVERALL AND 90.0 ROCKWELL B MAXIMUM OVERALL |
| AASL |
HEAD DIAMETER |
0.750 INCHES MINIMUM AND 0.770 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
STEEL OVERALL |
| CQBC |
MINIMUM TENSILE STRENGTH |
48000 POUNDS PER SQUARE INCH |
| CQHQ |
MINIMUM YIELD STRENGTH |
40000 POUNDS PER SQUARE INCH |
| AGQB |
NECK LENGTH |
0.344 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| CWXQ |
NECK WIDTH |
0.307 INCHES MINIMUM AND 0.324 INCHES MAXIMUM |
| AHYM |
NOMINAL THREAD DIAMETER |
0.312 INCHES |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
GM 255M,GENERAL MOTORS CORP MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
24617 4252-M ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND ZINC OVERALL |
| AAJD |
THREAD CLASS |
2A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.875 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
18 |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
