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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
13688 MARTIN MARIETTA CORP ELECTRONICS LAB

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
AAWJ DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER 0.500 INCHES NOMINAL
AASK HEAD STYLE KNURLED NO. 1
AASA THREAD LENGTH 0.265 INCHES MINIMUM
ABQZ INTERNAL DRIVE STYLE SLOT
AASB FASTENER LENGTH 0.940 INCHES NOMINAL
AASU HEAD HEIGHT 0.300 INCHES NOMINAL
CSNG EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 1
AAWD SECOND DIAMETER FROM HEAD 0.139 INCHES MINIMUM AND 0.149 INCHES MAXIMUM
AAWC FIRST DIAMETER FROM HEAD 0.300 INCHES NOMINAL
AAWH DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 0.080 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL STEEL COMP 303 OVERALL OR STEEL COMP 303SE OVERALL
AASL HEAD DIAMETER 0.560 INCHES NOMINAL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
FEAT SPECIAL FEATURES CONE POINT 90 DEG OF ANGLE
THSD THREAD SERIES DESIGNATOR UNF
AAJD THREAD CLASS 2A
CMLP THREAD QUANTITY PER INCH 32
SFTT SURFACE TREATMENT PASSIVATE OVERALL

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