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Part Number

Part Number:
NSN:
NIIN:
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
06950 ALCOA GLOBAL FASTENERS INC. DBA ALCO

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
CRSQ COUNTERSINK ANGLE 100.0 DEGREES NOMINAL
MATT MATERIAL TITANIUM ALLOY UNS R56400 OVERALL
THSD THREAD SERIES DESIGNATOR UNJF
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT COUNTERSUNK
ANEE GRIP LENGTH 1.645 INCHES MINIMUM AND 1.665 INCHES MAXIMUM
AASL HEAD DIAMETER 0.376 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AAUR GRIP DIAMETER 0.1890 INCHES MINIMUM AND 0.1895 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 32
AASA THREAD LENGTH 0.345 INCHES NOMINAL
AASB FASTENER LENGTH 1.985 INCHES MINIMUM AND 2.015 INCHES MAXIMUM

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