| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.219 INCHES MINIMUM FIRST HOLE AND 0.235 INCHES MAXIMUM FIRST HOLE |
| FEAT |
SPECIAL FEATURES |
HEAD SLANTED 45 DEGREES; ROCKWELL C HARDENED 1.250 IN. MIN. TO 1.750 IN. MAX ON HEAD |
| CQFM |
HARDNESS RATING |
43.0 ROCKWELL C MINIMUM HEAD AND 48.0 ROCKWELL C MAXIMUM HEAD |
| AASU |
HEAD HEIGHT |
2.250 INCHES NOMINAL |
| AASA |
THREAD LENGTH |
1.375 INCHES NOMINAL |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
4.000 INCHES NOMINAL FIRST HOLE |
| AATB |
WIDTH BETWEEN FLATS |
0.907 INCHES MINIMUM AND 0.938 INCHES MAXIMUM |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AASK |
HEAD STYLE |
SQUARE |
| AHYM |
NOMINAL THREAD DIAMETER |
0.500 INCHES |
| MATT |
MATERIAL |
STEEL COMP 4140H OVERALL OR STEEL COMP 4142H OVERALL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AATX |
SHOULDER LENGTH |
1.250 INCHES NOMINAL FIRST SHOULDER |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AAJD |
THREAD CLASS |
2A |
| AATN |
SHOULDER DIAMETER |
0.500 INCHES MINIMUM FIRST SHOULDER AND 0.562 INCHES MAXIMUM FIRST SHOULDER |
| CQFM |
HARDNESS RATING |
33.0 ROCKWELL C MINIMUM THREADS AND 38.0 ROCKWELL C MAXIMUM THREADS |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| AASB |
FASTENER LENGTH |
4.250 INCHES NOMINAL |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| CQFM |
HARDNESS RATING |
33.0 ROCKWELL C MINIMUM GRIP AND 38.0 ROCKWELL C MAXIMUM GRIP |
| CMLP |
THREAD QUANTITY PER INCH |
13 |