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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
80064 NAVAL SHIP SYSTEMS COMMAND

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281,CLASS A FED SPEC SINGLE MATERIAL RESPONSE
AASA THREAD LENGTH 0.400 INCHES MINIMUM AND 0.500 INCHES MAXIMUM
AASL HEAD DIAMETER 0.389 INCHES MINIMUM AND 0.414 INCHES MAXIMUM
AASK HEAD STYLE FILLISTER
ZZZT NONDEFINITIVE SPEC/STD DATA 1 TYPE AND 4S STYLE
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
AASU HEAD HEIGHT 0.155 INCHES MINIMUM AND 0.170 INCHES MAXIMUM
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
ZZZX DEPARTURE FROM CITED DESIGNATOR AS MODIFIED BY MATERIAL
AAJF THREAD DIRECTION RIGHT-HAND
CYAU SCREW MATERIAL NICKEL ALLOY 400
AASB FASTENER LENGTH 0.500 INCHES NOMINAL
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
CMLP THREAD QUANTITY PER INCH 20

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