5305-00-185-2551 SETSCREW Index 5305-00-185-2575 SCREW,MACHINE

National Stock Number:
5305-00-185-2568

Federal Supply Class:
5305

National Item Identification Number:
001852568

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:
1349028005842DYNEX/RIVETT INC.
B1349-02805842DYNEX/RIVETT INC.


Techincal Specification:
FASTENER LENGTH1.000 INCHES NOMINAL
HARDNESS RATING36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL
HEAD DIAMETER0.469 INCHES NOMINAL
HEAD HEIGHT0.312 INCHES NOMINAL
HEAD STYLEKNURLED NO. 1
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
WIDTH ACROSS FLATS0.250 INCHES NOMINAL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.889 INCHES MINIMUM AND 1.000 INCHES MAXIMUM
THREAD QUANTITY PER INCH18
THREAD SERIES DESIGNATORUNC


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