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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
17446 HUCK INTERNATIONAL INC. DBA ALCOA FA

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
THSD THREAD SERIES DESIGNATOR UNJF
AASA THREAD LENGTH 0.888 INCHES MINIMUM AND 0.955 INCHES MAXIMUM
AAJD THREAD CLASS 3A
AAWB SHANK UNTHREADED HOLE DIAMETER 0.141 INCHES MINIMUM FIRST HOLE AND 0.146 INCHES MAXIMUM FIRST HOLE
AAJF THREAD DIRECTION RIGHT-HAND
AASB FASTENER LENGTH 3.086 INCHES MINIMUM AND 3.133 INCHES MAXIMUM
MATT MATERIAL STEEL COMP XM-13 OVERALL
CMLP THREAD QUANTITY PER INCH 16
CQBC MINIMUM TENSILE STRENGTH 125000 POUNDS PER SQUARE INCH
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
AATB WIDTH BETWEEN FLATS 1.064 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AASK HEAD STYLE DOUBLE HEXAGON
CRZS DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER 2.948 INCHES MINIMUM FIRST HOLE AND 3.005 INCHES MAXIMUM FIRST HOLE
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
AAUR GRIP DIAMETER 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM
SFTT SURFACE TREATMENT PASSIVATE OVERALL
AASU HEAD HEIGHT 0.390 INCHES MINIMUM AND 0.410 INCHES MAXIMUM
ANEE GRIP LENGTH 2.178 INCHES MINIMUM AND 2.198 INCHES MAXIMUM

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