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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
24446 GENERAL ELECTRIC CO

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATC EXTENDED WASHER DIAMETER 0.312 INCHES NOMINAL
AASA THREAD LENGTH 0.438 INCHES MAXIMUM
CYAU SCREW MATERIAL IRON ALLOY 660
CYBG HEAD HOLE CONFIGURATION STYLE HEXAGON FLATS
AAJD THREAD CLASS 3A
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
AASU HEAD HEIGHT 0.250 INCHES NOMINAL
CYBA SCREW SURFACE TREATMENT PASSIVATE
AATD EXTENDED WASHER THICKNESS 0.035 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AHYM NOMINAL THREAD DIAMETER 0.164 INCHES
ASXK HOLE QUANTITY 1
AATB WIDTH BETWEEN FLATS 0.216 INCHES NOMINAL
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION AMS 5735 ASSN STD SINGLE MATERIAL RESPONSE
CQFM HARDNESS RATING 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AAUB HOLE DIAMETER 0.047 INCHES NOMINAL
AASB FASTENER LENGTH 0.438 INCHES NOMINAL
AASK HEAD STYLE DOUBLE HEXAGON EXTENDED WASHER
CMLP THREAD QUANTITY PER INCH 32

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