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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
81755 LOCKHEED MARTIN CORPORATION DBA LOCK

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
MDCL MATERIAL DOCUMENT AND CLASSIFICATION AMS 6487 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
AAUR GRIP DIAMETER 0.4985 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM
AASU HEAD HEIGHT 0.130 INCHES MINIMUM AND 0.143 INCHES MAXIMUM
AASL HEAD DIAMETER 0.690 INCHES MINIMUM AND 0.710 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
AASK HEAD STYLE FILLISTER COUNTERSUNK
AAJD THREAD CLASS 3A
AHYM NOMINAL THREAD DIAMETER 0.500 INCHES
AAJF THREAD DIRECTION RIGHT-HAND
CQBC MINIMUM TENSILE STRENGTH 220000 POUNDS PER SQUARE INCH
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION NAS 672 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
MATT MATERIAL STEEL OVERALL
AASA THREAD LENGTH 0.779 INCHES MINIMUM AND 0.809 INCHES MAXIMUM
AAWU SINGLE SHEAR STRENGTH 132000 POUNDS PER SQUARE INCH
CMLP THREAD QUANTITY PER INCH 20
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
ANEE GRIP LENGTH 0.615 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
AASB FASTENER LENGTH 1.419 INCHES NOMINAL
SFTT SURFACE TREATMENT CADMIUM OVERALL

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