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, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), BUT MAY ALSO BE DESIGNED FOR EXTERNAL WRENCHING. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.
CAGE Information
| Code | Company |
|---|---|
| 80205 | NATIONAL AEROSPACE STANDARDS COMMITT |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CYAW | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B121 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B36 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B16 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B124 ASSN STD SINGLE MATERIAL RESPONSE |
| CYAW | SCREW MATERIAL DOCUMENT AND CLASSIFICATION | ASTM B121 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B36 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B16 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM B124 ASSN STD SINGLE MATERIAL RESPONSE |
| AASL | HEAD DIAMETER | 0.452 NOMINAL MILS AND 0.507 NOMINAL CENTIMETERS |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ABQZ | INTERNAL DRIVE STYLE | CROSS RECESS TYPE 1 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASK | HEAD STYLE | FLAT COUNTERSUNK |
| CYAU | SCREW MATERIAL | COPPER ALLOY |
| CQBC | MINIMUM TENSILE STRENGTH | 57000 POUNDS PER SQUARE INCH |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| CRSQ | COUNTERSINK ANGLE | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| CYBA | SCREW SURFACE TREATMENT | OXIDE |
| AASB | FASTENER LENGTH | 1.500 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| AASA | THREAD LENGTH | 1.400 INCHES MINIMUM AND 1.500 INCHES MAXIMUM |
| CYBE | SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-F-495 MIL STD SINGLE TREATMENT RESPONSE |