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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
73197 HI-SHEAR CORPORATION

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CMLP THREAD QUANTITY PER INCH 24
ANEE GRIP LENGTH 2.490 INCHES MINIMUM AND 2.510 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AAJD THREAD CLASS 3A
AASA THREAD LENGTH 0.441 INCHES MINIMUM AND 0.508 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
ZZZK SPECIFICATION/STANDARD DATA 76301-ST3-453 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
AASB FASTENER LENGTH 2.951 INCHES MINIMUM AND 2.998 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
MATT MATERIAL STEEL COMP XM-13 OVERALL
AAUR GRIP DIAMETER 0.3115 INCHES MINIMUM AND 0.3120 INCHES MAXIMUM
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 2.827 INCHES MINIMUM FIRST HOLE AND 2.884 INCHES MAXIMUM FIRST HOLE
AASU HEAD HEIGHT 0.177 INCHES MINIMUM AND 0.197 INCHES MAXIMUM
AAWB SHANK UNTHREADED HOLE DIAMETER 0.076 INCHES MINIMUM FIRST HOLE AND 0.081 INCHES MAXIMUM FIRST HOLE
AASK HEAD STYLE DOUBLE HEXAGON
AHYM NOMINAL THREAD DIAMETER 0.312 INCHES

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