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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
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AASU HEAD HEIGHT 0.375 INCHES MINIMUM AND 0.390 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AAUR GRIP DIAMETER 0.748 INCHES MINIMUM AND 0.749 INCHES MAXIMUM
AGAV END ITEM IDENTIFICATION END ITEM NSN: 1427-01-532-0256 CANISTER ASSEMBLY, GUIDED MISSILE, AND LAUNCHING ASSEMBLY; PATRIOT PAC3
AAUB HOLE DIAMETER 0.070 INCHES MINIMUM AND 0.080 INCHES MAXIMUM
AAJD THREAD CLASS 3A
ANEE GRIP LENGTH 3.115 INCHES MINIMUM AND 3.135 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 1.052 INCHES MINIMUM AND 1.065 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
ASXK HOLE QUANTITY 3
AASA THREAD LENGTH 0.666 INCHES NOMINAL
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS6349 ASSN STD 1ST MATERIAL RESPONSE OVERALL OR AMS6415 ASSN STD 2ND MATERIAL RESPONSE OVERALL OR AMS6484 ASSN STD 2ND MATERIAL RESPONSE OVERALL OR AMS6322 ASSN STD 3RD MATERIAL RESPONSE OVERALL OR MIL-S-6049 MIL SPEC 3RD MATERIAL RESPONSE OVERALL
AASB FASTENER LENGTH 3.776 INCHES MINIMUM AND 3.806 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 16
AHYM NOMINAL THREAD DIAMETER 0.750 INCHES
AASK HEAD STYLE DISHED HEXAGON
CRHC HOLE CONFIGURATION STYLE HEXAGON FLATS
MATT MATERIAL STEEL COMP 4340 OVERALL OR STEEL COMP 4140 OVERALL OR STEEL COMP 8740 OVERALL
BQDM HOLE TYPE DRILLED
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416, TY 2, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SFTT SURFACE TREATMENT CADMIUM OVERALL

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