| MRC |
Requirement Statement |
Characteristics |
| CRSQ |
COUNTERSINK ANGLE |
82.0 DEGREES NOMINAL |
| AASB |
FASTENER LENGTH |
0.500 INCHES NOMINAL |
| AASL |
HEAD DIAMETER |
0.531 INCHES NOMINAL |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
STEEL OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
HEXAGON |
| AAUM |
LOCKING FEATURE |
PATCH LOCKING FEATURE |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
FF-S-86, TY IV FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| CXCY |
PART NAME ASSIGNED BY CONTROLLING AGENCY |
SCREW, SOCKET, FLATHEAD, SELF-LOCKING |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-Z-325, TY II, CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
ZINC OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
