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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
80539 SPS TECHNOLOGIES LLC DBA AEROSPACE F

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASU HEAD HEIGHT 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AAJD THREAD CLASS 3A
CSYM SURFACE FINISH 6.0 MICROINCHES THREADS
AATB WIDTH BETWEEN FLATS 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM
CSYM SURFACE FINISH 63.0 MICROINCHES GRIP
AAJF THREAD DIRECTION RIGHT-HAND
CSYM SURFACE FINISH 63.0 MICROINCHES BEARING SURFACE OF HEAD
ANEE GRIP LENGTH 2.240 INCHES MINIMUM AND 2.260 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 16
AASK HEAD STYLE HEXAGON
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
MATT MATERIAL TITANIUM ALLOY OVERALL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AASA THREAD LENGTH 0.552 INCHES MINIMUM AND 0.592 INCHES MAXIMUM
AAUR GRIP DIAMETER 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM
AASB FASTENER LENGTH 2.812 INCHES MINIMUM AND 2.832 INCHES MAXIMUM
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 2.684 INCHES MINIMUM ALL HOLES AND 2.714 INCHES MAXIMUM ALL HOLES

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