| MRC |
Requirement Statement |
Characteristics |
| AAJD |
THREAD CLASS |
2A |
| SR-1 |
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE |
MILB857TYPE2GRADE2 |
| SR-1 |
SPEC/STD CONTROLLING DATA |
|
| SFTT |
SURFACE TREATMENT |
CADMIUM AND CHROMATE OVERALL |
| AASB |
FASTENER LENGTH |
4.000 INCHES NOMINAL |
| AATB |
WIDTH BETWEEN FLATS |
0.425 INCHES MINIMUM AND 0.437 INCHES MAXIMUM |
| CBBL |
FEATURES PROVIDED |
FINISHED HEAD |
| CQBC |
MINIMUM TENSILE STRENGTH |
69000 POUNDS PER SQUARE INCH |
| AASU |
HEAD HEIGHT |
0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
0.750 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| MATT |
MATERIAL |
STEEL OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| SR-1 |
MANUFACTURERS CODE |
81349 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
HEXAGON |
| ZZZT |
NONDEFINITIVE SPEC/STD DATA |
2 TYPE AND 2 GRADE |
| CQFM |
HARDNESS RATING |
100.0 ROCKWELL B NOMINAL OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
