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Part Number

Part Number:
NSN:
NIIN:
Item Name:
BOLT , MACHINE

Definition:

AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION THROUGH HOLES IN ASSEMBLED PARTS AND NORMALLY INTENDED TO BE TIGHTENED OR RELEASED BY TORQUING A NUT. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF ONE NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER OR BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. FOR ITEMS HAVING A GRIP LENGTH PORTION MACHINED TO A TOLERANCE OF 0.0015 INCH (0.038 MM) OR LESS, BOLT, SHEAR. SEE ALSO SCREW, CAP, HEXAGON HEAD AND SCREW, MACHINE.

CAGE Information

Code Company
81343 SOCIETY OF AUTOMOTIVE ENGINEERS INC

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CSYM SURFACE FINISH 32.0 MICROINCHES THREADS
CSYM SURFACE FINISH 32.0 MICROINCHES GRIP
CQHQ MINIMUM YIELD STRENGTH 85000 POUNDS PER SQUARE INCH
AAUB HOLE DIAMETER 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AASU HEAD HEIGHT 0.167 INCHES MINIMUM AND 0.183 INCHES MAXIMUM
CSYM SURFACE FINISH 32.0 MICROINCHES BEARING SURFACE OF HEAD
CQFM HARDNESS RATING 24.0 ROCKWELL C MINIMUM OVERALL AND 35.0 ROCKWELL C MAXIMUM OVERALL
CBBL FEATURES PROVIDED FINISHED HEAD
AAJD THREAD CLASS 3A
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CQBC MINIMUM TENSILE STRENGTH 130000 POUNDS PER SQUARE INCH
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AASA THREAD LENGTH 0.750 INCHES MINIMUM AND 0.810 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL IRON ALLOY 660 OVERALL
ASXK HOLE QUANTITY 1
AASK HEAD STYLE HEXAGON
CRHC HOLE CONFIGURATION STYLE HEXAGON FLATS
AATB WIDTH BETWEEN FLATS 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM
BQDM HOLE TYPE DRILLED
AASB FASTENER LENGTH 0.938 INCHES NOMINAL
ANEE GRIP LENGTH 0.128 INCHES MINIMUM AND 0.188 INCHES MAXIMUM

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