5360-01-414-8977 SPRING,HELICAL,COMPRESSION Index 5310-01-414-8979 WASHER,SPRING TENSION

National Stock Number:
5305-01-414-8978

Federal Supply Class:
5305

National Item Identification Number:
014148978

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:
27044 FIND 2778062SARGENT AEROSPACE & DEFENSE, LLC
AN565BC428H588044AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE
AN565BC428H5D9182ZF INDUSTRIEANTRIEBE WITTEN GMBH


Techincal Specification:
FASTENER LENGTH0.302 INCHES MINIMUM AND 0.322 INCHES MAXIMUM
HARDNESS RATING45.0 ROCKWELL C MINIMUM AND 53.0 ROCKWELL C MAXIMUM OVERALL
HEAD STYLEHEADLESS (SETSCREW)
INTERNAL DRIVE STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-7720 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 303 OR STEEL COMP 303SE OVERALL
NOMINAL THREAD DIAMETER0.250 INCHES
NONDEFINITIVE SPEC/STD DATA1 TYPE AND 2 STYLE
POINT STYLECONE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS3A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH28
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
WIDTH ACROSS FLATS0.125 INCHES MINIMUM AND 0.127 INCHES MAXIMUM


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