4540-01-144-5140 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5340-01-144-5143 STANDOFF,THREADED,SPACING

National Stock Number:
5310-01-144-5141

Federal Supply Class:
5310

National Item Identification Number:
011445141

Description:
NUT,PLAIN,HEXAGON

Detail:
A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see LOCKNUT, ELECTRICAL CONDUIT. See also LOCKNUT, TUBE FITTING. For items having a thickness (or height) exceeding two times the width across the flats, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. (When height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)


Manufacturer Information:
1304776718876U S ARMY AVIATION AND MISSILE COMMAND
1304776734313L & P MACHINE INCORPORATED


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
MATERIALSTEEL COMP 440C OVERALL
NOMINAL THREAD SIZE0.688 INCHES
NUT HEIGHT0.156 INCHES NOMINAL
NUT STYLEHEXAGON
WIDTH ACROSS FLATS1.000 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUN
THREAD QUANTITY PER INCH32


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