| MRC |
Requirement Statement |
Characteristics |
| AASB |
FASTENER LENGTH |
5.500 INCHES NOMINAL |
| CQFM |
HARDNESS RATING |
104.0 BRINELL STANDARD MINIMUM OVERALL |
| AASU |
HEAD HEIGHT |
0.226 INCHES MINIMUM AND 0.268 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
HEXAGON |
| MATT |
MATERIAL |
STEEL OVERALL |
| CQBC |
MINIMUM TENSILE STRENGTH |
55000 POUNDS PER SQUARE INCH |
| ZZZT |
NONDEFINITIVE SPEC/STD DATA |
B GRADE |
| CTYF |
NONMACHINE NOMINAL THREAD DIAMETER |
0.375 INCHES |
| CRGF |
NONMACHINE THREAD STYLE |
GIMLET POINT (TYPE A, AB OR BA) |
| MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
FF-B-561,GRADE B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| AATN |
SHOULDER DIAMETER |
0.360 INCHES MINIMUM FIRST SHOULDER AND 0.388 INCHES MAXIMUM FIRST SHOULDER |
| AATX |
SHOULDER LENGTH |
0.125 INCHES MINIMUM FIRST SHOULDER |
| CWYB |
SHOULDER SHAPE |
ROUND FIRST SHOULDER |
| AATB |
WIDTH BETWEEN FLATS |
0.544 INCHES MINIMUM AND 0.562 INCHES MAXIMUM |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
ASTM A153 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SFTT |
SURFACE TREATMENT |
ZINC OVERALL |
