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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
55921 CURTIS-TOLEDO INC.

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CQFM HARDNESS RATING 23.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL
CQFM HARDNESS RATING 23.0 ROCKWELL C MINIMUM OVERALL AND 32.0 ROCKWELL C MAXIMUM OVERALL
CQHQ MINIMUM YIELD STRENGTH 85000 POUNDS PER SQUARE INCH
ZZZT NONDEFINITIVE SPEC/STD DATA 2 TYPE AND 10P STYLE
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY2 CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION SAE GR 5 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AASA THREAD LENGTH 1.250 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
CQBC MINIMUM TENSILE STRENGTH 120000 POUNDS PER SQUARE INCH
CMLP THREAD QUANTITY PER INCH 14
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
AASU HEAD HEIGHT 0.272 INCHES MINIMUM AND 0.291 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.438 INCHES
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
AATB WIDTH BETWEEN FLATS 0.612 INCHES MINIMUM AND 0.625 INCHES MAXIMUM
AASB FASTENER LENGTH 1.250 INCHES NOMINAL

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