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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
99207 GENERAL ELECTRIC COMPANY DBA GE DIV

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATC EXTENDED WASHER DIAMETER 0.312 INCHES NOMINAL
AATD EXTENDED WASHER THICKNESS 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM
AAJD THREAD CLASS 3A
CYAU SCREW MATERIAL STEEL
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
AASU HEAD HEIGHT 0.250 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AHYM NOMINAL THREAD DIAMETER 0.164 INCHES
CQFM HARDNESS RATING 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM
AATB WIDTH BETWEEN FLATS 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AASB FASTENER LENGTH 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
AASA THREAD LENGTH 0.553 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 32
AASK HEAD STYLE DOUBLE HEXAGON W/ HOLE

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