Part Number
Part Number:
NSN:
NIIN:
Item Name:
SCREW , EXTERNALLY RELIEVED BODY
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 |
| 80063 |
US ARMY COMMUNICATIONS & ELECTRONICS |
Characteristics (Decoded)
| MRC |
Requirements Statement |
Clear Text Reply |
| SUPP |
SUPPLEMENTARY FEATURES |
ALTERED FROM MS51957-20B,NSN 5305-00-822-4520 |
| AASA |
THREAD LENGTH |
0.275 INCHES MAXIMUM |
| AASL |
HEAD DIAMETER |
0.205 INCHES MINIMUM AND 0.219 INCHES MAXIMUM |
| AASU |
HEAD HEIGHT |
0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM |
| CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
1 |
| AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
0.600 INCHES NOMINAL |
| ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
| AAJF |
THREAD DIRECTION |
RIGHT-HAND |
| AHYM |
NOMINAL THREAD DIAMETER |
0.112 INCHES |
| MATT |
MATERIAL |
STEEL OVERALL |
| AASB |
FASTENER LENGTH |
0.875 INCHES NOMINAL |
| THSD |
THREAD SERIES DESIGNATOR |
UNC |
| AAJD |
THREAD CLASS |
2A |
| AAWC |
FIRST DIAMETER FROM HEAD |
0.079 INCHES MINIMUM AND 0.084 INCHES MAXIMUM |
| AASK |
HEAD STYLE |
PAN |
| CMLP |
THREAD QUANTITY PER INCH |
40 |
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