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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
05257 GENERAL DYNAMICS CANADA LTD

Federal Supply Class

Title

SCREWS

Inclusions:

Exclusions:

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.086 INCHES
AHYM NOMINAL THREAD DIAMETER 0.086 INCHES
CYAW SCREW MATERIAL DOCUMENT AND CLASSIFICATION MIL-S-18732 MIL SPEC 2ND MATERIAL RESPONSE OR QQ-S-763 FED SPEC 3RD MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 1ST MATERIAL RESPONSE OR MIL-S-7720 MIL SPEC 4TH MATERIAL RESPONSE
ABQZ INTERNAL DRIVE STYLE CROSS RECESS TYPE 1
CYBA SCREW SURFACE TREATMENT PASSIVATE
AAJF THREAD DIRECTION RIGHT-HAND
AASK HEAD STYLE FLAT COUNTERSUNK
CYAU SCREW MATERIAL STEEL COMP 303 OR STEEL COMP 430 OR STEEL COMP 303SE OR STEEL COMP 302
AASL HEAD DIAMETER 0.150 INCHES MINIMUM AND 0.172 INCHES MAXIMUM
THSD THREAD SERIES DESIGNATOR UNC
AAJD THREAD CLASS 2A
CRSQ COUNTERSINK ANGLE 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
CMLP THREAD QUANTITY PER INCH 56
AASB FASTENER LENGTH 0.156 INCHES MINIMUM AND 0.188 INCHES MAXIMUM
AASA THREAD LENGTH 0.152 INCHES MINIMUM AND 0.188 INCHES MAXIMUM

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