6850-01-441-3221 ANTIFREEZE Index 6850-01-441-3223 ANTIFREEZE

National Stock Number:
5305-01-441-3222

Federal Supply Class:
5305

National Item Identification Number:
014413222

Description:
SCREW,CAP,HEXAGON HEAD

Detail:
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. The threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. The thread length being the controlled dimension, the grip length is not specified. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; and SCREW, CAP, SOCKET HEAD.


Manufacturer Information:
PWA80635-277445RTX CORPORATION


Techincal Specification:
EXTENDED WASHER DIAMETER0.750 INCHES NOMINAL
EXTENDED WASHER THICKNESS0.062 INCHES NOMINAL
FASTENER LENGTH1.000 INCHES NOMINAL
HEAD STYLEHEXAGON EXTENDED WASHER
MATERIALCOPPER ALLOY PRIMARY WASHER
MATERIALSTEEL FASTENER
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)


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