| AASU |
HEAD HEIGHT |
2.250 INCHES MINIMUM AND 2.312 INCHES MAXIMUM |
| AATC |
EXTENDED WASHER DIAMETER |
3.750 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
27.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UN |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AATD |
EXTENDED WASHER THICKNESS |
1.000 INCHES NOMINAL |
| AATN |
SHOULDER DIAMETER |
2.480 INCHES MINIMUM FIRST SHOULDER AND 2.490 INCHES MAXIMUM FIRST SHOULDER |
| MATT |
MATERIAL |
STEEL COMP 4140 OVERALL OR STEEL COMP 8640 OVERALL |
| AAJD |
THREAD CLASS |
2A |
| AASB |
FASTENER LENGTH |
11.813 INCHES MINIMUM AND 11.875 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
PHOSPHATE OVERALL |
| AASK |
HEAD STYLE |
HEXAGON EXTENDED WASHER |
| AATB |
WIDTH BETWEEN FLATS |
2.172 INCHES MINIMUM AND 2.188 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
2.563 INCHES MINIMUM AND 2.641 INCHES MAXIMUM |
| AATX |
SHOULDER LENGTH |
9.234 INCHES MINIMUM FIRST SHOULDER AND 9.250 INCHES MAXIMUM FIRST SHOULDER |