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 |
18876 |
U S ARMY AVIATION AND MISSILE COMMAN |
Characteristics (Decoded)
MRC |
Requirements Statement |
Clear Text Reply |
AHYM |
NOMINAL THREAD DIAMETER |
0.190 INCHES |
CMLP |
THREAD QUANTITY PER INCH |
24 |
AAWH |
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER |
1.625 INCHES NOMINAL |
AASK |
HEAD STYLE |
PAN NO. 2 |
AASA |
THREAD LENGTH |
2.000 INCHES MINIMUM |
AASU |
HEAD HEIGHT |
0.099 INCHES MINIMUM AND 0.110 INCHES MAXIMUM |
AASB |
FASTENER LENGTH |
3.625 INCHES NOMINAL |
CSNG |
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY |
1 |
ABQZ |
INTERNAL DRIVE STYLE |
CROSS RECESS TYPE 1 |
AASL |
HEAD DIAMETER |
0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM |
AAJF |
THREAD DIRECTION |
RIGHT-HAND |
THSD |
THREAD SERIES DESIGNATOR |
UNC |
AAJD |
THREAD CLASS |
2A |
MDCL |
MATERIAL DOCUMENT AND CLASSIFICATION |
QQ-B-626,COMP 1 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
MATT |
MATERIAL |
COPPER ALLOY 268 OVERALL |
AAWC |
FIRST DIAMETER FROM HEAD |
0.139 INCHES NOMINAL |
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