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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
AASA THREAD LENGTH 0.205 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
ABQZ INTERNAL DRIVE STYLE SLOT
CQBC MINIMUM TENSILE STRENGTH 80000 POUNDS PER SQUARE INCH
AASL HEAD DIAMETER 0.193 INCHES MINIMUM AND 0.211 INCHES MAXIMUM
AASB FASTENER LENGTH 0.230 INCHES MINIMUM AND 0.250 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE
AASK HEAD STYLE ROUND
AHYM NOMINAL THREAD DIAMETER 0.112 INCHES
CYAU SCREW MATERIAL NICKEL ALLOY 400
AASU HEAD HEIGHT 0.075 INCHES MINIMUM AND 0.086 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
CMLP THREAD QUANTITY PER INCH 40

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