| AATD |
EXTENDED WASHER THICKNESS |
0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM |
| BZRR |
THREAD SERIES |
UNF COUNTERBORE |
| AATC |
EXTENDED WASHER DIAMETER |
0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AAXC |
CONCENTRIC HOLE DIAMETER |
0.213 INCHES NOMINAL |
| AAJD |
THREAD CLASS |
3A |
| CWWR |
INTERNAL THREAD CLASS |
3B COUNTERBORE |
| MATT |
MATERIAL |
STEEL COMP 8740 OVERALL OR STEEL COMP 8735 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 6150 OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAEL |
THREADS PER INCH |
28 COUNTERBORE |
| AASA |
THREAD LENGTH |
0.460 INCHES MINIMUM AND 0.510 INCHES MAXIMUM |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| ABXT |
INTERNAL THREAD LENGTH |
0.195 INCHES MINIMUM COUNTERBORE AND 0.205 INCHES MAXIMUM COUNTERBORE |
| CQJX |
NOMINAL THREAD SIZE |
0.250 INCHES COUNTERBORE |
| AASU |
HEAD HEIGHT |
0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416 TY 2 CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| STYL |
STYLE DESIGNATOR |
COUNTERBORE THREADED |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL AND CHROMATE OVERALL |
| AATB |
WIDTH BETWEEN FLATS |
0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
0.970 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
DOUBLE HEXAGON W/HOLE |