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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
80204 AMERICAN NATIONAL STANDARDS INSTITUT

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
MDCL MATERIAL DOCUMENT AND CLASSIFICATION QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
AAJF THREAD DIRECTION RIGHT-HAND
ZZZT NONDEFINITIVE SPEC/STD DATA 1 TYPE
AASA THREAD LENGTH 1.025 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 16
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
AATB WIDTH BETWEEN FLATS 0.551 INCHES MINIMUM AND 0.562 INCHES MAXIMUM
MATT MATERIAL NICKEL ALLOY 400 OVERALL
AHYM NOMINAL THREAD DIAMETER 0.375 INCHES
AASB FASTENER LENGTH 1.220 INCHES MINIMUM AND 1.250 INCHES MAXIMUM
AASU HEAD HEIGHT 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM

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