| AATX |
SHOULDER LENGTH |
1.457 INCHES MINIMUM FIRST SHOULDER AND 1.459 INCHES MAXIMUM FIRST SHOULDER |
| AATC |
EXTENDED WASHER DIAMETER |
0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| MATT |
MATERIAL |
STEEL CORROSION RESISTING OVERALL |
| AAJD |
THREAD CLASS |
3A |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AATB |
WIDTH BETWEEN FLATS |
0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.361 INCHES MINIMUM AND 0.383 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
35.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| AASB |
FASTENER LENGTH |
1.820 INCHES MINIMUM AND 1.840 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM |
| AATD |
EXTENDED WASHER THICKNESS |
0.070 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
DOUBLE HEXAGON EXTENDED WASHER |
| AATN |
SHOULDER DIAMETER |
0.3670 INCHES MINIMUM FIRST SHOULDER AND 0.3690 INCHES MAXIMUM FIRST SHOULDER |