| MRC |
Requirement Statement |
Characteristics |
| CRSQ |
COUNTERSINK ANGLE |
99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| AASB |
FASTENER LENGTH |
0.515 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.1889 INCHES MINIMUM AND 0.1894 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| AASL |
HEAD DIAMETER |
0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 8740 OVERALL OR STEEL COMP 4037 OVERALL |
| CQBC |
MINIMUM TENSILE STRENGTH |
160000 POUNDS PER SQUARE INCH |
| AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| SFTT |
SURFACE TREATMENT |
CADMIUM THREADS |
| SFTT |
SURFACE TREATMENT |
CADMIUM TOP OF HEAD |
| TEST |
TEST DATA DOCUMENT |
18349-MIL-I-6868 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE |
