1720-01-465-1635 PACKING,STEAM Index 1720-01-465-1637 PACKING,STEAM

National Stock Number:
5305-01-465-1636

Federal Supply Class:
5305

National Item Identification Number:
014651636

Description:
SCREW,CAP,SOCKET HEAD

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes items with bevel (conical) heads. See BOLT, INTERNAL WRENCHING. Excludes SCREW, SHOULDER; and SCREW, MACHINE.


Manufacturer Information:
D91906-580020NAVAL AIR WARFARE CENTER AIRCRAFT DIVISION CODE 4.8.8.0.0.B BLDG 148-2


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD LENGTH0.500 INCHES NOMINAL
FASTENER LENGTH0.500 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
HARDNESS RATING80.0 ROCKWELL B MINIMUM OVERALL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.438 INCHES MAXIMUM
HEAD HEIGHT0.312 INCHES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.219 INCHES MAXIMUM
SPECIAL FEATURESMATERIAL IS HEAT TREATED IN ACCORDANCE TO MIL-H-6686


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