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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
2N935 BE AEROSPACE INC.

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
THSD THREAD SERIES DESIGNATOR UNJF
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AASA THREAD LENGTH 0.316 INCHES NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
MATT MATERIAL STEEL COMP 4140 OVERALL OR STEEL COMP 4340 OVERALL OR STEEL COMP 8740 OVERALL
AASL HEAD DIAMETER 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM
AASB FASTENER LENGTH 0.754 INCHES NOMINAL
AASU HEAD HEIGHT 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
ANEE GRIP LENGTH 0.428 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
AAUR GRIP DIAMETER 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
AGAV END ITEM IDENTIFICATION CN-235 TRANSPORT AIRCRAFT
SFTT SURFACE TREATMENT CADMIUM OVERALL
AASK HEAD STYLE PAN

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