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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
53711 NAVAL SEA SYSTEMS COMMAND

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CRTL CRITICALITY CODE JUSTIFICATION ZZZW
SFTT SURFACE TREATMENT ZINC OVERALL
ZZZW DEPARTURE FROM CITED DOCUMENT MATERIAL WILL BE IN ACCORANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS
MDCL MATERIAL DOCUMENT AND CLASSIFICATION SAE GRADE 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AASB FASTENER LENGTH 5.375 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
ZZZT NONDEFINITIVE SPEC/STD DATA 1 TYPE
AASA THREAD LENGTH 1.000 INCHES NOMINAL
MATT MATERIAL STEEL OVERALL
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
AHYM NOMINAL THREAD DIAMETER 0.375 INCHES
AASU HEAD HEIGHT 0.226 INCHES MINIMUM AND 0.243 INCHES MAXIMUM

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