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Part Number

Part Number:
NSN:
NIIN:
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
06725 SPS TECHNOLOGIES LLC DBA AIR INDUSTR

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AAUR GRIP DIAMETER 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
AASL HEAD DIAMETER 0.959 INCHES MINIMUM AND 1.017 INCHES MAXIMUM
MATT MATERIAL TITANIUM ALLOY UNS R56400 OVERALL
THSD THREAD SERIES DESIGNATOR UNJF
ANEE GRIP LENGTH 0.865 INCHES MINIMUM AND 0.885 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 4928 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 4967 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AHYM NOMINAL THREAD DIAMETER 0.500 INCHES
AAJF THREAD DIRECTION RIGHT-HAND
SFTT SURFACE TREATMENT ALUMINUM OVERALL
AASK HEAD STYLE FLAT COUNTERSUNK
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
AASA THREAD LENGTH 0.725 INCHES MINIMUM AND 0.745 INCHES MAXIMUM
CSYM SURFACE FINISH 32.0 MICROINCHES OVERALL
AASB FASTENER LENGTH 1.610 INCHES MINIMUM AND 1.625 INCHES MAXIMUM
CMLP THREAD QUANTITY PER INCH 20
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION NAS 4006 ASSN STD SINGLE TREATMENT RESPONSE OVERALL

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