Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , HEXAGON HEAD
Definition:
AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; AND SCREW, CAP, SOCKET HEAD.
CAGE Information
| Code | Company |
|---|---|
| 21450 | ARMY WEAPONS COMMAND ATTN AMSWE-REE- |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASU | HEAD HEIGHT | 0.591 INCHES MINIMUM AND 0.627 INCHES MAXIMUM |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL OR ZINC OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 8 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CQBC | MINIMUM TENSILE STRENGTH | 60000 POUNDS PER SQUARE INCH |
| AASA | THREAD LENGTH | 2.500 INCHES MINIMUM AND 2.812 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 6.500 INCHES NOMINAL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416 TY 1 CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325 TY 1 CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL |
| AATB | WIDTH BETWEEN FLATS | 1.469 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| AHYM | NOMINAL THREAD DIAMETER | 1.000 INCHES |
| CQFM | HARDNESS RATING | 70.0 ROCKWELL B MINIMUM OVERALL AND 100.0 ROCKWELL B MAXIMUM OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | SAE GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL |