| MRC |
Requirement Statement |
Characteristics |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
1.297 INCHES MINIMUM FIRST HOLE AND 1.328 INCHES MAXIMUM FIRST HOLE |
| AASB |
FASTENER LENGTH |
1.459 INCHES MINIMUM AND 1.479 INCHES MAXIMUM |
| AAVZ |
GROOVE DIAMETER |
0.191 INCHES MINIMUM AND 0.201 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
26.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| AASL |
HEAD DIAMETER |
0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.109 INCHES MINIMUM AND 0.141 INCHES MAXIMUM |
| 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 |
| CQBC |
MINIMUM TENSILE STRENGTH |
125000 POUNDS PER SQUARE INCH |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
SLOT |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.066 INCHES MINIMUM FIRST HOLE AND 0.076 INCHES MAXIMUM FIRST HOLE |
| AAWU |
SINGLE SHEAR STRENGTH |
3680 POUNDS PER SQUARE INCH |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2 CL 3 FED SPEC ALL TREATMENT RESPONSES OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.324 INCHES MINIMUM AND 0.364 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
