4940-00-253-4746 GUN,SPRAY,BORESCOPE PORT Index 5120-00-253-4750 EXTRACTOR,ELECTRON TUBE

National Stock Number:
5305-00-253-4749

Federal Supply Class:
5305

National Item Identification Number:
002534749

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:
MS51018-2996906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
FASTENER LENGTH0.250 INCHES NOMINAL
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEHEADLESS (SETSCREW)
INTERNAL DRIVE STYLEHEXAGON
MATERIALSTEEL OVERALL
NOMINAL THREAD DIAMETER0.138 INCHES
NONDEFINITIVE SPEC/STD DATA3 TYPE AND 4 STYLE
POINT STYLECUP
WIDTH ACROSS FLATS0.625 INCHES MINIMUM AND 0.635 INCHES MAXIMUM
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.250 INCHES MAXIMUM
THREAD QUANTITY PER INCH40
THREAD SERIES DESIGNATORUNF


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