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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SCREW , MACHINE

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN./1.5 MM) OR LARGER, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL 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. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.

CAGE Information

Code Company
14898 MISSILCRAFT CO DIV OF KAY FACTORS IN

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASA THREAD LENGTH 0.169 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
AASA THREAD LENGTH 0.169 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
ABQZ INTERNAL DRIVE STYLE SLOT
CYAU SCREW MATERIAL STEEL COMP 302 OR STEEL COMP 304
AATB WIDTH BETWEEN FLATS 0.181 INCHES MINIMUM AND 0.187 INCHES MAXIMUM
CYBA SCREW SURFACE TREATMENT PASSIVATE
AAJF THREAD DIRECTION RIGHT-HAND
AHYM NOMINAL THREAD DIAMETER 0.112 INCHES
AASB FASTENER LENGTH 0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
CMLP THREAD QUANTITY PER INCH 40
AASU HEAD HEIGHT 0.049 INCHES MINIMUM AND 0.060 INCHES MAXIMUM

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