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Part Number

Part Number:
NSN:
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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
K0160 LISTER PETTER LTD

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CSYM SURFACE FINISH 125.0 MICROINCHES GRIP
CSYM SURFACE FINISH 125.0 MICROINCHES GRIP
AASA THREAD LENGTH 0.625 INCHES MINIMUM
SFTT SURFACE TREATMENT CADMIUM OVERALL OR ZINC OVERALL
AATB WIDTH BETWEEN FLATS 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
ZZZT NONDEFINITIVE SPEC/STD DATA 2 TYPE AND 10P STYLE AND 2 GRADE
CQFM HARDNESS RATING 23.0 ROCKWELL C NOMINAL OVERALL
AAJF THREAD DIRECTION RIGHT-HAND
CSYM SURFACE FINISH 125.0 MICROINCHES BEARING SURFACE OF HEAD
MDCL MATERIAL DOCUMENT AND CLASSIFICATION SAE GR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATT MATERIAL STEEL OVERALL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE OVERALL
AASU HEAD HEIGHT 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
AASB FASTENER LENGTH 0.625 INCHES NOMINAL
CQBC MINIMUM TENSILE STRENGTH 74000 POUNDS PER SQUARE INCH
CMLP THREAD QUANTITY PER INCH 20

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