| MRC |
Requirement Statement |
Characteristics |
| CRZS |
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER |
1.323 INCHES MINIMUM FIRST HOLE AND 1.343 INCHES MAXIMUM FIRST HOLE |
| CRSQ |
COUNTERSINK ANGLE |
100.0 DEGREES NOMINAL |
| AASB |
FASTENER LENGTH |
1.418 INCHES MINIMUM AND 1.438 INCHES MAXIMUM |
| AAUR |
GRIP DIAMETER |
0.2487 INCHES MINIMUM AND 0.2492 INCHES MAXIMUM |
| ANEE |
GRIP LENGTH |
1.110 INCHES MINIMUM AND 1.125 INCHES MAXIMUM |
| CQFM |
HARDNESS RATING |
40.0 ROCKWELL C MINIMUM OVERALL AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| AASL |
HEAD DIAMETER |
0.449 INCHES MINIMUM AND 0.502 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
FLAT COUNTERSUNK |
| MATT |
MATERIAL |
STEEL COMP 8740 OVERALL OR STEEL COMP E4340 OVERALL OR STEEL COMP 4340 OVERALL |
| AHYM |
NOMINAL THREAD DIAMETER |
0.250 INCHES |
| ABQZ |
INTERNAL DRIVE STYLE |
OFFSET CRUCIFORM (TORQUE SET) |
| AAUM |
LOCKING FEATURE |
DETENT BALL GRIP |
| AAWB |
SHANK UNTHREADED HOLE DIAMETER |
0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| FEAT |
SPECIAL FEATURES |
RETAINING ELEMENT IN THREADS |
| THSD |
THREAD SERIES DESIGNATOR |
UNJF |
| CSYM |
SURFACE FINISH |
32.0 MICROINCHES GRIP |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE THREADS |
| STDC |
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION |
QQ-P-416,TY2 CL3 FED SPEC SINGLE TREATMENT RESPONSE HEAD |
| SFTT |
SURFACE TREATMENT |
CADMIUM HEAD AND CHROMATE HEAD |
| SFTT |
SURFACE TREATMENT |
CADMIUM THREADS AND CHROMATE THREADS |
| AAJD |
THREAD CLASS |
3A |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AASA |
THREAD LENGTH |
0.293 INCHES MINIMUM AND 0.328 INCHES MAXIMUM |
| CMLP |
THREAD QUANTITY PER INCH |
28 |
