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Part Number:
NSN:
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Item Name:
SCREW , CLOSE TOLERANCE

Definition:

A SCREW, MACHINE OR SCREW, CAP, SOCKET HEAD WHOSE UNTHREADED PORTION IS OF SPECIFIED GRIP LENGTH, PLATED OR UNPLATED, AND IS MACHINED TO A TOLERANCE OF ONE THOUSANDTH (0.001 IN.) (0.025 MM) OR LESS OF A SPECIFIC DIAMETER FOR ITEMS (1.000 IN.) (25 MM) OR LESS IN DIAMETER. ITEMS OVER (1.000 IN.) (25 MM) IN DIAMETER SHALL HAVE A TOLERANCE OF FIFTEEN TEN THOUSANDTHS (0.0015 IN.) (0.038 MM) OR LESS. THE NOMINAL MAJOR DIAMETER OF THE THREADS SHALL BE AT LEAST ONE THOUSANDTH (0.001 IN.) (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 DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER. IT IS NOT DESIGNED FOR ROTATION BY THE THUMB AND FINGERS. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS.

CAGE Information

Code Company
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.190 INCHES
AAVA POINT DIAMETER 0.189 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
ANEE GRIP LENGTH 0.062 INCHES NOMINAL
AAJD THREAD CLASS 3A
ABQJ POINT STYLE FLAT
AAJF THREAD DIRECTION RIGHT-HAND
AAUR GRIP DIAMETER 0.331 INCHES MINIMUM
CQBC MINIMUM TENSILE STRENGTH 3180 POUNDS PER SQUARE INCH
SFTT SURFACE TREATMENT ALUMINUM OVERALL
AASU HEAD HEIGHT 0.133 INCHES MAXIMUM
AASA THREAD LENGTH 0.338 INCHES NOMINAL
AASB FASTENER LENGTH 0.062 INCHES NOMINAL
MATT MATERIAL TITANIUM OVERALL
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
CMLP THREAD QUANTITY PER INCH 32
AASK HEAD STYLE PAN
AASL HEAD DIAMETER 0.373 INCHES MAXIMUM

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