| MRC |
Requirement Statement |
Characteristics |
| AAJD |
THREAD CLASS |
2A |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE FASTENER |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
SAE J429,GRADE 8 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A354,GRADE BD ASSN STD SINGLE MATERIAL RESPONSE FASTENER |
| MATT |
MATERIAL |
STEEL OVERALL PLASTIC POLYAMIDE LOCKING FEATURE STEEL FASTENER |
| CBBL |
FEATURES PROVIDED |
FINISHED HEAD |
| AASU |
HEAD HEIGHT |
0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
20 |
| SFTT |
SURFACE TREATMENT |
ZINC AND CHROMATE FASTENER |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AASA |
THREAD LENGTH |
0.938 INCHES MINIMUM |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASK |
HEAD STYLE |
HEXAGON |
| CQFM |
HARDNESS RATING |
33.0 ROCKWELL C MINIMUM AND 39.0 ROCKWELL C MAXIMUM FASTENER |
| FEAT |
SPECIAL FEATURES |
LOCKING FEATURE IS PLASTIC POLYAMIDE |
| AAUM |
LOCKING FEATURE |
PATCH OR STRIP THREADS |
| AATB |
WIDTH BETWEEN FLATS |
0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| AASB |
FASTENER LENGTH |
1.938 INCHES MINIMUM AND 2.000 INCHES MAXIMUM |
| CQBC |
MINIMUM TENSILE STRENGTH |
150000 POUNDS PER SQUARE INCH |
