| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
MIL-C-16232 TY 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| FEAT |
SPECIAL FEATURES |
UNDERCUT UNDER HEAD 0.046 IN. W,0.453 IN. DIA AND 32 MICROINCH FINISH ON SHOULDER |
| AATX |
SHOULDER LENGTH |
2.641 INCHES NOMINAL FIRST SHOULDER |
| AASA |
THREAD LENGTH |
0.625 INCHES MINIMUM |
| MATT |
MATERIAL |
STEEL COMP 4340 OVERALL |
| SFTT |
SURFACE TREATMENT |
PHOSPHATE MANGANESE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AATB |
WIDTH BETWEEN FLATS |
0.625 INCHES NOMINAL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| CQFM |
HARDNESS RATING |
240.0 BRINELL STANDARD MINIMUM OVERALL AND 285.0 BRINELL STANDARD MAXIMUM OVERALL |
| AASU |
HEAD HEIGHT |
0.312 INCHES NOMINAL |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AASK |
HEAD STYLE |
HEXAGON |
| AHYM |
NOMINAL THREAD DIAMETER |
0.438 INCHES |
| AATN |
SHOULDER DIAMETER |
0.466 INCHES MINIMUM FIRST SHOULDER AND 0.467 INCHES MAXIMUM FIRST SHOULDER |
| AASB |
FASTENER LENGTH |
3.327 INCHES NOMINAL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR ASTM A331 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| CMLP |
THREAD QUANTITY PER INCH |
20 |