| AASA |
THREAD LENGTH |
0.370 INCHES MINIMUM AND 0.390 INCHES MAXIMUM |
| AAJD |
THREAD CLASS |
3A |
| AATC |
EXTENDED WASHER DIAMETER |
0.428 INCHES MINIMUM AND 0.443 INCHES MAXIMUM |
| AATD |
EXTENDED WASHER THICKNESS |
0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
| CQFM |
HARDNESS RATING |
32.0 ROCKWELL C MINIMUM OVERALL AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.205 INCHES MINIMUM AND 0.226 INCHES MAXIMUM |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
2 |
| AAWD |
SECOND DIAMETER FROM HEAD |
0.265 INCHES MINIMUM AND 0.266 INCHES MAXIMUM |
| MATT |
MATERIAL |
STEEL OVERALL |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.052 INCHES MINIMUM AND 0.062 INCHES MAXIMUM |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
AMS 2403 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| AATB |
WIDTH BETWEEN FLATS |
0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
B50R270 FSCM 99207 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| AAWJ |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER |
0.188 INCHES MINIMUM AND 0.213 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
0.640 INCHES MINIMUM AND 0.660 INCHES MAXIMUM |
| SFTT |
SURFACE TREATMENT |
NICKEL OVERALL |
| AASK |
HEAD STYLE |
DOUBLE HEXAGON W/HOLE |