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 |
|---|---|
| 57574 | VELAN VALVE CORPORATION DIV VELAN VA |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AATN | SHOULDER DIAMETER | 0.621 INCHES MINIMUM OVERALL AND 0.623 INCHES MAXIMUM OVERALL |
| CRTL | CRITICALITY CODE JUSTIFICATION | ZZZY |
| AASA | THREAD LENGTH | 0.090 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
| AAUB | HOLE DIAMETER | 0.061 INCHES MINIMUM AND 0.067 INCHES MAXIMUM |
| AATX | SHOULDER LENGTH | 3.245 INCHES MINIMUM GRIP AND 3.250 INCHES MAXIMUM GRIP |
| AAJD | THREAD CLASS | 3A |
| AHYM | NOMINAL THREAD DIAMETER | 0.500 INCHES |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| CWYB | SHOULDER SHAPE | ROUND GRIP |
| AASL | HEAD DIAMETER | 0.853 INCHES MINIMUM AND 0.875 INCHES MAXIMUM |
| AASK | HEAD STYLE | BUTTON |
| ASXK | HOLE QUANTITY | 1 |
| AATN | SHOULDER DIAMETER | 0.621 INCHES MINIMUM FASTENER AND 0.623 INCHES MAXIMUM FASTENER |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| AASB | FASTENER LENGTH | 4.000 INCHES NOMINAL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A 574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| MATT | MATERIAL | STEEL UNS K03104 OVERALL |
| BQDM | HOLE TYPE | DRILLED |
| AASU | HEAD HEIGHT | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM |
| CRHC | HOLE CONFIGURATION STYLE | ROUND |
| ASDB | WIDTH ACROSS FLATS | 0.312 INCHES MINIMUM AND 0.316 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 13 |