| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 2,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
CADMIUM OVERALL OR ZINC OVERALL |
| AATB |
WIDTH BETWEEN FLATS |
0.798 INCHES MINIMUM AND 0.812 INCHES MAXIMUM |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AASA |
THREAD LENGTH |
0.610 INCHES MINIMUM |
| AASB |
FASTENER LENGTH |
0.980 INCHES MINIMUM AND 1.040 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
23.0 ROCKWELL C NOMINAL OVERALL |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AATN |
SHOULDER DIAMETER |
0.660 INCHES NOMINAL FIRST SHOULDER |
| THSD |
THREAD SERIES DESIGNATOR |
UNF |
| AAJD |
THREAD CLASS |
2A |
| AASK |
HEAD STYLE |
HEXAGON |
| AHYM |
NOMINAL THREAD DIAMETER |
0.438 INCHES |
| FEAT |
SPECIAL FEATURES |
STRIP TYPE LOCKING ELEMENT IN THREADS 0.440 IN. LONG |
| AATX |
SHOULDER LENGTH |
0.310 INCHES NOMINAL FIRST SHOULDER |
| MATT |
MATERIAL |
STEEL COMP 1541 OVERALL |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
ASTM A576 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AASU |
HEAD HEIGHT |
0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM |