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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
AASA THREAD LENGTH 9.0 MILLIMETERS NOMINAL
AASK HEAD STYLE PAN NO. 2
CQWR EXTERNAL THREAD TOLERANCE CLASS 4H6H
AHYM NOMINAL THREAD DIAMETER 5.0 MILLIMETERS
CQQR THREAD PITCH IN MILLIMETERS 0.8
ANEE GRIP LENGTH 12.00 MILLIMETERS NOMINAL
AAUR GRIP DIAMETER 4.9785 MILLIMETERS NOMINAL
AAJF THREAD DIRECTION RIGHT-HAND
AASL HEAD DIAMETER 9.7 MILLIMETERS MINIMUM AND 10.0 MILLIMETERS MAXIMUM
CQFM HARDNESS RATING 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL
ZZZK SPECIFICATION/STANDARD DATA 80205-NA0035 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THSD THREAD SERIES DESIGNATOR MJ
MATT MATERIAL STEEL OVERALL
AASU HEAD HEIGHT 2.8 MILLIMETERS MINIMUM AND 3.0 MILLIMETERS MAXIMUM
ABQZ INTERNAL DRIVE STYLE OFFSET CRUCIFORM (TORQUE SET)
SFTT SURFACE TREATMENT CADMIUM OVERALL
AASB FASTENER LENGTH 21.00 MILLIMETERS NOMINAL

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