| CQBC |
MINIMUM TENSILE STRENGTH |
180000 POUNDS PER SQUARE INCH |
| AAJD |
THREAD CLASS |
3A |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AATB |
WIDTH BETWEEN FLATS |
0.500 INCHES NOMINAL |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AASU |
HEAD HEIGHT |
0.156 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASB |
FASTENER LENGTH |
2.281 INCHES NOMINAL |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
2.165 INCHES NOMINAL FIRST HOLE |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AATN |
SHOULDER DIAMETER |
0.3104 INCHES MINIMUM FIRST SHOULDER AND 0.3110 INCHES MAXIMUM FIRST SHOULDER |
| AATX |
SHOULDER LENGTH |
1.218 INCHES NOMINAL FIRST SHOULDER |
| CQFM |
HARDNESS RATING |
39.0 ROCKWELL C MINIMUM OVERALL AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| AASK |
HEAD STYLE |
HEXAGON |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TYPE 2 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| AASA |
THREAD LENGTH |
0.296 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL COMP 4130 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 6150 OVERALL OR STEEL COMP 1095 OVERALL OR STEEL COMP 8740 OVERALL |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.077 INCHES MINIMUM FIRST HOLE AND 0.082 INCHES MAXIMUM FIRST HOLE |