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Part Number:
NSN:
NIIN:
Item Name:
BOLT , SHEAR

Definition:

A HIGH STRENGTH, 160,000 POUNDS PER SQUARE INCH (1100 MEGAPASCALS) MINIMUM TENSILE STRENGTH EXTERNALLY THREADED FASTENER DESIGNED FOR USE IN APPLICATIONS INVOLVING GREAT SHEAR STRESS. THE HEAD IS DESIGNED TO ACCOMMODATE AN EXTERNAL WRENCH OR DRIVER. 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. THE UNTHREADED PORTION IS OF SPECIFIC 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. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. SEE BOLT, MACHINE AND BOLT, CLEVIS.

CAGE Information

Code Company
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

BOLTS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AATD EXTENDED WASHER THICKNESS 0.059 INCHES MINIMUM AND 0.079 INCHES MAXIMUM
AATC EXTENDED WASHER DIAMETER 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS1271 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AASA THREAD LENGTH 0.460 INCHES MINIMUM AND 0.510 INCHES MAXIMUM
AAJF THREAD DIRECTION RIGHT-HAND
AASU HEAD HEIGHT 0.290 INCHES MINIMUM AND 0.310 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNF
AAUR GRIP DIAMETER 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION NAS621,COMP 6AL-4V ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATT MATERIAL TITANIUM ALLOY UNS R54520 OVERALL
AASB FASTENER LENGTH 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
AATB WIDTH BETWEEN FLATS 0.306 INCHES MINIMUM AND 0.315 INCHES MAXIMUM
ANEE GRIP LENGTH 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
AASK HEAD STYLE DOUBLE HEXAGON W/HOLE

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