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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

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
CXCY PART NAME ASSIGNED BY CONTROLLING AGENCY BOLT, TENSION, HEX HEAD, CLOSE TOLERANCE, A286 CRES, LONG THREAD, RDUCED MAJOR THREAD DIAMETER, NON-LOCKING, 160 KSI FTU
CMLP THREAD QUANTITY PER INCH 24
THSD THREAD SERIES DESIGNATOR UNJF
MATT MATERIAL STEEL CORROSION RESISTING OVERALL
AASU HEAD HEIGHT 0.156 INCHES MINIMUM AND 0.186 INCHES MAXIMUM
AAJD THREAD CLASS 3A
ANEE GRIP LENGTH 0.812 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION AMS-QQ-P-416, TYPE II. CLASS 2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
AAUR GRIP DIAMETER 0.311 INCHES MINIMUM AND 0.312 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
AASK HEAD STYLE HEXAGON
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AASB FASTENER LENGTH 1.422 INCHES MINIMUM AND 1.452 INCHES MAXIMUM
AHYM NOMINAL THREAD DIAMETER 0.312 INCHES
AASA THREAD LENGTH 0.469 INCHES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL

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