5305-01-091-3488 SCREW,MACHINE Index 5306-01-091-3491 BOLT,INTERNALLY RELIEVED BODY

National Stock Number:
5305-01-091-3490

Federal Supply Class:
5305

National Item Identification Number:
010913490

Description:
SETSCREW

Detail:
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.


Manufacturer Information:
SC10-429440W. M. BERG INC


Techincal Specification:
FASTENER LENGTH0.234 INCHES NOMINAL
HARDNESS RATING48.0 ROCKWELL C MINIMUM AND 52.0 ROCKWELL C MAXIMUM FASTENER
HEAD STYLEHEADLESS (SETSCREW)
INTERNAL DRIVE STYLEHEXAGON
MATERIALCOPPER ALLOY POINT
MATERIALSTEEL FASTENER
NOMINAL THREAD DIAMETER0.250 INCHES
POINT STYLEHALF DOG
WIDTH ACROSS FLATS0.125 INCHES NOMINAL
SURFACE TREATMENTOXIDE FASTENER
THREAD LENGTH0.188 INCHES NOMINAL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)


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