| MRC |
Requirement Statement |
Characteristics |
| AAVR |
DISTANCE FROM LARGEST DIAMETER OF BEARING SURFACE OF HEAD TO RIBS |
0.228 INCHES NOMINAL |
| AASB |
FASTENER LENGTH |
3.374 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
39.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| AASU |
HEAD HEIGHT |
0.187 INCHES MINIMUM AND 0.203 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.640 INCHES NOMINAL |
| MATT |
MATERIAL |
STEEL COMP 410 OVERALL |
| CQBC |
MINIMUM TENSILE STRENGTH |
180000 POUNDS PER SQUARE INCH |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CRKB |
RIB INCLUDED ANGLE |
45.0 DEGREES NOMINAL |
| AAVQ |
RIB LENGTH |
1.334 INCHES NOMINAL |
| AAVP |
RIB MAJOR DIAMETER |
0.3720 INCHES MINIMUM AND 0.3740 INCHES MAXIMUM |
| AAVT |
RIB MINOR DIAMETER |
0.3457 INCHES NOMINAL |
| AAVU |
RIB QUANTITY |
36 |
| AATN |
SHOULDER DIAMETER |
0.3720 INCHES MINIMUM FIRST SHOULDER AND 0.3740 INCHES MAXIMUM FIRST SHOULDER |
| AATX |
SHOULDER LENGTH |
1.334 INCHES NOMINAL FIRST SHOULDER |
| CWYB |
SHOULDER SHAPE |
RIBBED FIRST SHOULDER |
| FEAT |
SPECIAL FEATURES |
INDEX MARK ON HEAD INDICATES LOCATION OF 3 SHOULDER RIBS REMOVED |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AATB |
WIDTH BETWEEN FLATS |
0.553 INCHES MINIMUM AND 0.564 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
PASSIVATE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.396 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
