| AATB |
WIDTH BETWEEN FLATS |
0.312 INCHES NOMINAL |
| MATT |
MATERIAL |
STEEL COMP 630 OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| AATD |
EXTENDED WASHER THICKNESS |
0.060 INCHES MINIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AAJD |
THREAD CLASS |
3A |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.222 INCHES MINIMUM AND 0.232 INCHES MAXIMUM |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
1 |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASU |
HEAD HEIGHT |
0.303 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| AASB |
FASTENER LENGTH |
0.500 INCHES NOMINAL |
| AATC |
EXTENDED WASHER DIAMETER |
0.438 INCHES NOMINAL |
| FEAT |
SPECIAL FEATURES |
32 MICRO-INCH FINISH ON BEARING SURFACE OF HEAD, SHANK, AND THREADS |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.079 INCHES MINIMUM AND 0.099 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
0.401 INCHES MINIMUM AND 0.421 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
DOUBLE HEXAGON W/HOLE |