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 |
|---|---|
| 53711 | NAVAL SEA SYSTEMS COMMAND |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTMF593 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AAVA | POINT DIAMETER | 0.185 INCHES NOMINAL |
| AAUB | HOLE DIAMETER | 0.052 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| ASXK | HOLE QUANTITY | 2 |
| FEAT | SPECIAL FEATURES | ITEM IS ALTERED FROM PART NUMBER MS16995-49. LOCKING HOLE IS DRILLED INTO SIDE OF HEAD, THROUGH INTERNAL DRIVE AND OUT THE OTHER SIDE OF HEAD |
| MATT | MATERIAL | STEEL COMP 304 OVERALL |
| AATB | WIDTH BETWEEN FLATS | 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM |
| AAWC | FIRST DIAMETER FROM HEAD | 0.185 INCHES NOMINAL |
| AGAV | END ITEM IDENTIFICATION | MK95MOD1,MOUN |
| AAJD | THREAD CLASS | 3A |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| AASU | HEAD HEIGHT | 0.250 INCHES NOMINAL |
| ABQJ | POINT STYLE | FLAT |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CLASS4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| AASA | THREAD LENGTH | 0.210 INCHES NOMINAL |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| HUES | COLOR | BLACK OVERALL |
| AASK | HEAD STYLE | DISHED HEXAGON |
| CRHC | HOLE CONFIGURATION STYLE | HEXAGON FLATS |
| ABQZ | INTERNAL DRIVE STYLE | HEXAGON |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.370 INCHES NOMINAL |
| BQDM | HOLE TYPE | DRILLED |
| AASB | FASTENER LENGTH | 0.830 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| ASDB | WIDTH ACROSS FLATS | 0.185 INCHES NOMINAL |