| MRC |
Requirement Statement |
Characteristics |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
1.297 INCHES MINIMUM FIRST HOLE AND 1.329 INCHES MAXIMUM FIRST HOLE |
| AASB |
FASTENER LENGTH |
1.469 INCHES NOMINAL |
| AAVZ |
GROOVE DIAMETER |
0.191 INCHES MINIMUM AND 0.201 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.500 INCHES NOMINAL |
| AASU |
HEAD HEIGHT |
0.125 INCHES NOMINAL |
| AASK |
HEAD STYLE |
BUTTON |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 8630 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4130 OVERALL OR STEEL COMP 4037 OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| FEAT |
SPECIAL FEATURES |
CRES PIN 0.0533 IN. DIA. BY 0.140 IN. LG LOCATED 0.050 IN. TO 0.055 IN. FROM BEARING SURFACE OF HEAD PIN PROTRUDES 0.060 IN. ABOVE SURFACE OF SHANK DIA. |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL OR QQ-C-320 CL 2 FED SPEC 3RD TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL OR CADMIUM OVERALL AND CHROMATE OVERALL OR CADMIUM OVERALL AND PHOSPHATE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.297 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
