| SFTT |
SURFACE TREATMENT |
ZINC OVERALL |
| AATC |
EXTENDED WASHER DIAMETER |
0.850 INCHES MINIMUM AND 0.890 INCHES MAXIMUM |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
SAE J429 GRADE 8 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.840 INCHES MINIMUM AND 0.850 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.306 INCHES MINIMUM AND 0.330 INCHES MAXIMUM |
| AATB |
WIDTH BETWEEN FLATS |
0.698 INCHES MINIMUM AND 0.722 INCHES MAXIMUM |
| AATN |
SHOULDER DIAMETER |
0.850 INCHES MINIMUM FIRST SHOULDER AND 0.890 INCHES MAXIMUM FIRST SHOULDER |
| MATT |
MATERIAL |
STEEL OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AAJD |
THREAD CLASS |
2A |
| AHYM |
NOMINAL THREAD DIAMETER |
0.4375 INCHES |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
ASTM B633 FE/ZN 5 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AASK |
HEAD STYLE |
HEXAGON EXTENDED WASHER |
| AATX |
SHOULDER LENGTH |
0.210 INCHES MINIMUM FIRST SHOULDER AND 0.220 INCHES MAXIMUM FIRST SHOULDER |
| AATD |
EXTENDED WASHER THICKNESS |
0.070 INCHES MINIMUM AND 0.115 INCHES MAXIMUM |
| AASB |
FASTENER LENGTH |
1.050 INCHES MINIMUM AND 1.070 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |