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Part Number

Part Number:
NSN:
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Item Name:
BOLT , CLOSE TOLERANCE

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE UNTHREADED PORTION IS OF A SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001) OF AN INCH (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS ONE INCH (25 MM) OR LESS IN DIAMETER. ITEMS OVER ONE INCH (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN-THOUSANDTHS (0.0015) OF AN INCH (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001) OF AN INCH (0.025 MM) BELOW THE MINIMUM SHANK DIAMETER, BUT NOT BELOW THE MINIMUM MAJOR DIAMETER FOR APPLICABLE CLASS OF FIT, AS SHOWN IN THE SCREW THREAD STANDARDS, FED STD H28 AND/OR OTHER NATIONALLY RECOGNIZED STANDARDS. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER, NOR IS IT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. FOR ITEMS HAVING CLOSE TOLERANCE, AND FABRICATED FROM MATERIAL HAVING 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH, SEE BOLT, SHEAR. FOR ITEMS FABRICATED FROM MATERIAL HAVING LESS THAN 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH AND NOT HAVING A CLOSE TOLERANCE, SEE BOLT, MACHINE.

CAGE Information

Code Company
07482 GENERAL ELECTRIC COMPANY DBA GE DIV

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASA THREAD LENGTH 0.520 INCHES NOMINAL
AATB WIDTH BETWEEN FLATS 0.312 INCHES NOMINAL
THSD THREAD SERIES DESIGNATOR UNJF
AAJD THREAD CLASS 3A
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AATD EXTENDED WASHER THICKNESS 0.060 INCHES MINIMUM AND 0.070 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AATC EXTENDED WASHER DIAMETER 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
AASU HEAD HEIGHT 0.293 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL IRON ALLOY 660 OVERALL
ANEE GRIP LENGTH 0.120 INCHES MINIMUM AND 0.130 INCHES MAXIMUM
CRHC HOLE CONFIGURATION STYLE DOUBLE HEXAGON LONGITUDINAL HOLE
AAUB HOLE DIAMETER 0.075 INCHES MINIMUM AND 0.095 INCHES MAXIMUM
ASXK HOLE QUANTITY 4
BQDM HOLE TYPE DRILLED
AAUR GRIP DIAMETER 0.2490 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
AASB FASTENER LENGTH 0.635 INCHES MINIMUM AND 0.655 INCHES MAXIMUM
AASK HEAD STYLE DOUBLE HEXAGON W/HOLE

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