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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
53711 NAVAL SEA SYSTEMS COMMAND

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
CMLP THREAD QUANTITY PER INCH 24
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE
AASU HEAD HEIGHT 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
ABQZ INTERNAL DRIVE STYLE W/O INTERNAL DRIVE
AAJF THREAD DIRECTION RIGHT-HAND
CYAU SCREW MATERIAL NICKEL ALLOY 400
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
FEAT SPECIAL FEATURES SELF-LOCKING
AASB FASTENER LENGTH 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
AASA THREAD LENGTH 0.667 INCHES MINIMUM

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