Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN.) (1.5 MM) OR LARGER. IT HAS A ROUND UNTHREADED NECK OR SHANK ALL OR PART OF WHICH IS OF GREATER DIAMETER THAN THE THREADED PORTION. THE HEAD IS DESIGNED TO BE DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) NOMINAL DIAMETER. NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST BE DESIGNED FOR ANY TYPE OF INSERTED DRIVER, BUT MAY ALSO PROVIDE FOR EXTERNAL WRENCHING OF THE HEAD. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS WHICH ARE BOTH SHOULDERED AND HAVE AN EXTERNALLY RELIEVED BODY, USE SCREW, EXTERNALLY RELIEVED BODY. FOR ITEMS WITH A NO. 10 (0.190 IN.) (5 MM) OR LARGER THREAD DIAMETER WITHOUT AN INSERTED DRIVER HEAD, USE BOLT, SHOULDER. EXCLUDES BOLT, INTERNAL WRENCHING AND SCREW, CAP, SOCKET HEAD.
CAGE Information
| Code | Company |
|---|---|
| 53711 | NAVAL SEA SYSTEMS COMMAND |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AASB | FASTENER LENGTH | 3.125 INCHES NOMINAL |
| ASDB | WIDTH ACROSS FLATS | 0.500 INCHES NOMINAL |
| CWYB | SHOULDER SHAPE | ROUND FIRST SHOULDER |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT CHAMFER |
| MATT | MATERIAL | STEEL OVERALL |
| AASL | HEAD DIAMETER | 2.625 INCHES NOMINAL |
| AASU | HEAD HEIGHT | 0.875 INCHES NOMINAL |
| CQBC | MINIMUM TENSILE STRENGTH | 115000 POUNDS PER SQUARE INCH |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AATX | SHOULDER LENGTH | 1.766 INCHES NOMINAL FIRST SHOULDER |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AASA | THREAD LENGTH | 1.109 INCHES MINIMUM AND 1.359 INCHES MAXIMUM |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A193, TYPE B16 OR TYPE B7 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AHYM | NOMINAL THREAD DIAMETER | 1.375 INCHES |
| CMLP | THREAD QUANTITY PER INCH | 6 |
| AATN | SHOULDER DIAMETER | 1.622 INCHES MINIMUM FIRST SHOULDER AND 1.623 INCHES MAXIMUM FIRST SHOULDER |