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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
10001 NAVAIR AND NAVSEA MANAGED ORIGINAL D

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
ABQZ INTERNAL DRIVE STYLE SLOT
ABQZ INTERNAL DRIVE STYLE SLOT
MATT MATERIAL STEEL COMP 303 OVERALL
AAWJ DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER 2.843 INCHES MINIMUM AND 2.846 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 18
AAJD THREAD CLASS 3A
AASU HEAD HEIGHT 0.250 INCHES NOMINAL
FEAT SPECIAL FEATURES THREAD RELIEF 0.460 IN. MIN 0.465 IN. MAX DIA,0.187 IN. WIDE
AASL HEAD DIAMETER 0.937 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT CHAMFER
CSNG EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 2
THSD THREAD SERIES DESIGNATOR UNF
AAWD SECOND DIAMETER FROM HEAD 0.681 INCHES MINIMUM AND 0.686 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.562 INCHES
AAWC FIRST DIAMETER FROM HEAD 0.500 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
AASA THREAD LENGTH 0.563 INCHES MINIMUM
AAWH DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 2.000 INCHES NOMINAL
AASB FASTENER LENGTH 3.593 INCHES MINIMUM AND 3.596 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION 66 FED STD SINGLE MATERIAL RESPONSE OVERALL

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