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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , HEXAGON HEAD

Definition:

AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; AND SCREW, CAP, SOCKET HEAD.

CAGE Information

Code Company
43689 HUNTINGTON INGALLS INCORPORATED DIV

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATB WIDTH BETWEEN FLATS 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
AASB FASTENER LENGTH 1.940 INCHES MINIMUM AND 2.000 INCHES MAXIMUM
MATT MATERIAL PLASTIC POLYAMIDE LOCKING FEATURE
AASA THREAD LENGTH 1.250 INCHES MINIMUM AND 1.635 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 130000 POUNDS PER SQUARE INCH
AHYM NOMINAL THREAD DIAMETER 0.500 INCHES
CQHQ MINIMUM YIELD STRENGTH 90000 POUNDS PER SQUARE INCH
AAJF THREAD DIRECTION RIGHT-HAND
ZZZT NONDEFINITIVE SPEC/STD DATA 1 TYPE
MATT MATERIAL NICKEL ALLOY K-500 FASTENER OR NICKEL ALLOY 502 FASTENER
AAUM LOCKING FEATURE PATCH THREADS OR STRIP THREADS
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
MDCL MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-286 FED SPEC ALL MATERIAL RESPONSES FASTENER
CQFM HARDNESS RATING 24.0 ROCKWELL C MINIMUM FASTENER AND 35.0 ROCKWELL C MAXIMUM FASTENER
AASU HEAD HEIGHT 0.302 INCHES MINIMUM AND 0.323 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 13

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