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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
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
THSD THREAD SERIES DESIGNATOR UNJC
MATT MATERIAL PLASTIC POLYAMIDE LOCKING FEATURE
AAWU SINGLE SHEAR STRENGTH 95000 POUNDS PER SQUARE INCH
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE FASTENER
ANEE GRIP LENGTH 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM
AASL HEAD DIAMETER 0.193 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
AASB FASTENER LENGTH 0.433 INCHES MINIMUM AND 0.463 INCHES MAXIMUM
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS7502 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
AAUM LOCKING FEATURE PATCH THREADS OR PELLET THREADS OR STRIP THREADS
AAJF THREAD DIRECTION RIGHT-HAND
AHYM NOMINAL THREAD DIAMETER 0.164 INCHES
AASK HEAD STYLE FLAT COUNTERSUNK
MDCL MATERIAL DOCUMENT AND CLASSIFICATION BAMS 5731 ASSN STD SINGLE MATERIAL RESPONSE FASTENER OR CAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE FASTENER
CRSQ COUNTERSINK ANGLE 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM
SFTT SURFACE TREATMENT PASSIVATE FASTENER
AAUR GRIP DIAMETER 0.1630 INCHES MINIMUM AND 0.1635 INCHES MAXIMUM
MATT MATERIAL IRON ALLOY 660 FASTENER
CMLP THREAD QUANTITY PER INCH 32
AASA THREAD LENGTH 0.323 INCHES MINIMUM

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