Part Number
Definition:
AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, AND WHOSE UNTHREADED PORTION HAS BEEN MACHINED OR GROUND IN ONE OR MORE PLACES OR OVER ITS ENTIRE LENGTH TO A MAXIMUM DIAMETER LESS THAN THE MINIMUM PITCH DIAMETER OF THE THREAD (EXCLUDES UNDERCUT FOR THREAD RELIEF). IT IS NO. 0 (0.060 IN.) (1.5 MM) OR LARGER, AND IS DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR INSERTED DRIVER (EXCLUDING INTERNAL SOCKET AND MULTIPLE SPLINE TYPES) OR BOTH IN SIZES BELOW NO. 10 (0.190 IN.) (5 MM) AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET AND 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. SEE ALSO BOLT, EXTERNALLY RELIEVED BODY AND BOLT, INTERNAL WRENCHING.
CAGE Information
| Code | Company |
|---|---|
| 04804 | NORTHROP GRUMMAN SYSTEMS CORPORATION |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| CRTL | CRITICALITY CODE JUSTIFICATION | ZZZY |
| MATT | MATERIAL | STEEL COMP 630 OVERALL |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 1.000 INCHES NOMINAL |
| AASA | THREAD LENGTH | 0.375 INCHES NOMINAL |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ABQZ | INTERNAL DRIVE STYLE | W/O INTERNAL DRIVE |
| AASU | HEAD HEIGHT | 0.156 INCHES NOMINAL |
| TEST | TEST DATA DOCUMENT | 81349-MIL-P-23199 SPECIFICATION |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASB | FASTENER LENGTH | 1.375 INCHES NOMINAL |
| SPCL | SPECIAL TEST FEATURES | SPECIAL QUALITY CONTROL TESTING |
| ZZZY | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | AS DIFFERENTIATED BY MATERIAL WHICH MUST CONFORM TO SHIPS PARTS CONTROL CENTER SPECIAL QUALITY CONTROL PROVISIONS |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AASK | HEAD STYLE | HEXAGON |
| AAWC | FIRST DIAMETER FROM HEAD | 0.190 INCHES MINIMUM AND 0.200 INCHES MAXIMUM |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| ZZZW | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY MATERIAL |
| AATB | WIDTH BETWEEN FLATS | 0.437 INCHES NOMINAL |