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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
27238 BRISTOL INDUSTRIES

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
AASU HEAD HEIGHT 0.250 INCHES MINIMUM AND 0.270 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AAJD THREAD CLASS 3A
AAJF THREAD DIRECTION RIGHT-HAND
AASA THREAD LENGTH 0.329 INCHES MINIMUM AND 0.349 INCHES MAXIMUM
AATD EXTENDED WASHER THICKNESS 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
MATT MATERIAL NICKEL ALLOY OVERALL
AATC EXTENDED WASHER DIAMETER 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
AASB FASTENER LENGTH 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
AASK HEAD STYLE DOUBLE HEXAGON EXTENDED WASHER
CMLP THREAD QUANTITY PER INCH 32

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