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 |
|---|---|
| 98230 | NATIONAL SECURITY AGENCY |
Federal Supply Class
Title
SCREWS
Inclusions:
Exclusions:
Characteristics (Decoded)
| MRC | Requirements Statement | Clear Text Reply |
|---|---|---|
| AAWC | FIRST DIAMETER FROM HEAD | 0.073 INCHES MINIMUM AND 0.083 INCHES MAXIMUM |
| AASB | FASTENER LENGTH | 0.437 INCHES NOMINAL |
| ABQZ | INTERNAL DRIVE STYLE | SLOT |
| AASA | THREAD LENGTH | 0.187 INCHES NOMINAL |
| MATT | MATERIAL | STEEL COMP 303 OVERALL |
| AASK | HEAD STYLE | FILLISTER |
| AASU | HEAD HEIGHT | 0.070 INCHES MINIMUM AND 0.078 INCHES MAXIMUM |
| CSNG | EXTERNALLY RELIEVED BODY DIAMETER QUANTITY | 1 |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AHYM | NOMINAL THREAD DIAMETER | 0.112 INCHES |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| AASL | HEAD DIAMETER | 0.166 INCHES MINIMUM AND 0.182 INCHES MAXIMUM |
| THSD | THREAD SERIES DESIGNATOR | UNC |
| AAJD | THREAD CLASS | 2A |
| AAWH | DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER | 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | PASSIVATE OVERALL |
| CMLP | THREAD QUANTITY PER INCH | 40 |