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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
83843 SUNDSTRAND CORP ELECTRIC POWER SYSTE

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
AASU HEAD HEIGHT 0.105 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
AASB FASTENER LENGTH 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
AASA THREAD LENGTH 0.433 INCHES MINIMUM AND 0.505 INCHES MAXIMUM
AAJD THREAD CLASS 3A
AATB WIDTH BETWEEN FLATS 0.305 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL STEEL OVERALL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-N-291,CL1-SB,GRADE G FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD THREAD SERIES DESIGNATOR UNC
AASK HEAD STYLE HEXAGON
CMLP THREAD QUANTITY PER INCH 32
SFTT SURFACE TREATMENT NICKEL OVERALL

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