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Part Number:
NSN:
NIIN:
Item Name:
SCREW , MACHINE

Definition:

AN EXTERNALLY THREADED FASTENER WHOSE THREADED PORTION IS OF ONE NOMINAL DIAMETER, NO 0 (0.060 IN./1.5 MM) OR LARGER, DESIGNED TO BE HELD OR DRIVEN WITH EITHER A WRENCH OR AN INSERTED DRIVER OR BOTH (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), IN SIZES BELOW NO. 10 (0.190 IN./5 MM). NO. 10 AND LARGER SIZES MUST HAVE A HEAD DESIGNED FOR ANY TYPE INSERTED DRIVER (EXCLUDING INTERNAL SOCKET OR INTERNAL MULTIPLE SPLINE TYPES), BUT MAY ALSO BE DESIGNED FOR EXTERNAL WRENCHING. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, CLEVIS; BOLT, EXTERNALLY RELIEVED BODY; SCREW, EXTERNALLY RELIEVED BODY; AND SCREW, ASSEMBLED WASHER. SEE ALSO, SCREW, INSTRUMENT; BOLT, MACHINE; BOLT, INTERNAL WRENCHING; AND SCREW, CAP SOCKET HEAD.

CAGE Information

Code Company
80205 NATIONAL AEROSPACE STANDARDS COMMITT

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
ZZZK SPECIFICATION/STANDARD DATA 80205-NAS1190 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
AASB FASTENER LENGTH 0.844 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNJF
ABQZ INTERNAL DRIVE STYLE TORQUE SET
AASA THREAD LENGTH 0.773 INCHES MINIMUM AND 0.875 INCHES MAXIMUM
CQBC MINIMUM TENSILE STRENGTH 160000 POUNDS PER SQUARE INCH
AAJD THREAD CLASS 3A
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-5626 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-8844 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-6049 MIL SPEC 2ND MATERIAL RESPONSE
CYBE SCREW SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY2 CL2 FED SPEC SINGLE TREATMENT RESPONSE
CYAV LOCKING FEATURE MATERIAL PLASTIC POLYAMIDE
AHYM NOMINAL THREAD DIAMETER 0.250 INCHES
CMLP THREAD QUANTITY PER INCH 28
AAUM LOCKING FEATURE PATCH
AAJF THREAD DIRECTION RIGHT-HAND
CYBA SCREW SURFACE TREATMENT CADMIUM AND CHROMATE
AASL HEAD DIAMETER 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM
AASU HEAD HEIGHT 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM
CYAU SCREW MATERIAL STEEL COMP 4140 OR STEEL COMP 8740
AASK HEAD STYLE PAN

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