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Part Number:
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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
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS1263 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS1263 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
AASU HEAD HEIGHT 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
AAJD THREAD CLASS 3A
AATB WIDTH BETWEEN FLATS 1.052 INCHES MINIMUM AND 1.064 INCHES MAXIMUM
AAWB SHANK UNTHREADED HOLE DIAMETER 0.141 INCHES MINIMUM FIRST HOLE AND 0.151 INCHES MAXIMUM FIRST HOLE
ANEE GRIP LENGTH 1.428 INCHES MINIMUM AND 1.448 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
AASB FASTENER LENGTH 1.995 INCHES MINIMUM AND 2.025 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNF
CMLP THREAD QUANTITY PER INCH 16
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 1.857 INCHES MINIMUM FIRST HOLE AND 1.907 INCHES MAXIMUM FIRST HOLE
AASK HEAD STYLE HEXAGON
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
MDCL MATERIAL DOCUMENT AND CLASSIFICATION NAS 4928,ALLOY 4AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATT MATERIAL TITANIUM ALLOY OVERALL
AASA THREAD LENGTH 0.547 INCHES MINIMUM AND 0.597 INCHES MAXIMUM
AAUR GRIP DIAMETER 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM

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