| MRC |
Requirement Statement |
Characteristics |
| SR-1 |
NON-DEFINITIVE GOVERNMENT SPEC/STD REFERENCE |
FFS85 |
| AAJD |
THREAD CLASS |
2A |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325,TY 2,CL 2 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| CQFM |
HARDNESS RATING |
23.0 ROCKWELL B MINIMUM AND 80.0 ROCKWELL B MAXIMUM OVERALL |
| SR-1 |
SPEC/STD CONTROLLING DATA |
|
| ZZZT |
NONDEFINITIVE SPEC/STD DATA |
2 TYPE AND 1 STYLE AND 2 GRADE |
| AASU |
HEAD HEIGHT |
0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| AASA |
THREAD LENGTH |
0.750 INCHES MINIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| MATT |
MATERIAL |
STEEL OVERALL |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| SR-1 |
MANUFACTURERS CODE |
81348 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
HEXAGON |
| CSYM |
SURFACE FINISH |
125.0 MICROINCHES BEARING SURFACE OF HEAD |
| SFTT |
SURFACE TREATMENT |
CADMIUM OR ZINC OVERALL |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AATB |
WIDTH BETWEEN FLATS |
0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AASB |
FASTENER LENGTH |
0.875 INCHES NOMINAL |
| CQBC |
MINIMUM TENSILE STRENGTH |
74000 POUNDS PER SQUARE INCH |
