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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
06725 SPS TECHNOLOGIES LLC DBA AIR INDUSTR

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CSYM SURFACE FINISH 32.0 MICROINCHES GRIP
AASB FASTENER LENGTH 1.701 INCHES MINIMUM AND 1.731 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AATC EXTENDED WASHER DIAMETER 0.807 INCHES MINIMUM AND 0.817 INCHES MAXIMUM
CSYM SURFACE FINISH 32.0 MICROINCHES BEARING SURFACE OF HEAD
AASA THREAD LENGTH 0.966 INCHES NOMINAL
AAJD THREAD CLASS 3A
AASK HEAD STYLE SPLINE EXTENDED WASHER
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AAJF THREAD DIRECTION RIGHT-HAND
AAUR GRIP DIAMETER 0.4360 INCHES MINIMUM AND 0.4370 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 220000 POUNDS PER SQUARE INCH
AATB WIDTH BETWEEN FLATS 0.514 INCHES MINIMUM AND 0.521 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.438 INCHES
AASU HEAD HEIGHT 0.320 INCHES MINIMUM AND 0.340 INCHES MAXIMUM
SFTT SURFACE TREATMENT CADMIUM OVERALL AND CHROMATE OVERALL
CQFM HARDNESS RATING 46.0 ROCKWELL C MINIMUM OVERALL AND 50.0 ROCKWELL C MAXIMUM OVERALL
MATT MATERIAL STEEL COMP H11 OVERALL
CMLP THREAD QUANTITY PER INCH 20
ANEE GRIP LENGTH 0.750 INCHES NOMINAL
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION MIL-C-8837,TY 2,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
AATD EXTENDED WASHER THICKNESS 0.053 INCHES MINIMUM AND 0.073 INCHES MAXIMUM

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