| SFTT |
SURFACE TREATMENT |
OXIDE FASTENER |
| AAUM |
LOCKING FEATURE |
PATCH THREADS |
| CQFM |
HARDNESS RATING |
38.0 ROCKWELL C MINIMUM FASTENER AND 42.0 ROCKWELL C MAXIMUM FASTENER |
| AASA |
THREAD LENGTH |
0.500 INCHES MAXIMUM |
| MATT |
MATERIAL |
PLASTIC POLYAMIDE LOCKING FEATURE |
| AATX |
SHOULDER LENGTH |
0.257 INCHES MINIMUM FIRST SHOULDER AND 0.257 INCHES MAXIMUM FIRST SHOULDER |
| CMLP |
THREAD QUANTITY PER INCH |
18 |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
FLAT CHAMFER |
| HUES |
COLOR |
BLACK FASTENER |
| ASDB |
WIDTH ACROSS FLATS |
0.188 INCHES MINIMUM AND 0.190 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
0.752 INCHES MINIMUM AND 0.757 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL COMP 4140 FASTENER |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AAJD |
THREAD CLASS |
2A |
| ABQZ |
INTERNAL DRIVE STYLE |
HEXAGON |
| AATN |
SHOULDER DIAMETER |
0.373 INCHES MINIMUM FIRST SHOULDER AND 0.374 INCHES MAXIMUM FIRST SHOULDER |
| AHYM |
NOMINAL THREAD DIAMETER |
0.312 INCHES |
| AASU |
HEAD HEIGHT |
0.243 INCHES MINIMUM AND 0.248 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.562 INCHES NOMINAL |