5305-01-201-3788 SCREW,TAPPING Index 5305-01-201-3790 SCREW,CAP,HEXAGON HEAD

National Stock Number:
5305-01-201-3789

Federal Supply Class:
5305

National Item Identification Number:
012013789

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:
0-001-012-47 PIECE 11899193HONEYWELL INTERNATIONAL INC.
LYC491C4H899193HONEYWELL INTERNATIONAL INC.


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.429 INCHES MINIMUM AND
0.500 INCHES MAXIMUM
FASTENER LENGTH0.500 INCHES NOMINAL
MATERIALSTEEL CORROSION RESISTING OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.370 INCHES NOMINAL
HEAD HEIGHT0.247 INCHES NOMINAL
INTERNAL DRIVE STYLEHEXAGON
WIDTH ACROSS FLATS0.188 INCHES NOMINAL


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