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 TYPECHAMFEREDCHAMFERED
MATERIALSTEEL COMP 440C OVERALL
NOMINAL THREAD SIZE0.688 INCHES0.688 INCHES
NUT HEIGHT0.156 INCHES NOMINAL0.156 INCHES NOMINAL
NUT STYLEHEXAGONHEXAGON
WIDTH ACROSS FLATS1.000 INCHES NOMINAL1.000 INCHES NOMINAL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTPASSIVATE OVERALLPASSIVATE OVERALL
THREAD CLASS2B2B
THREAD DIRECTIONRIGHT-HANDRIGHT-HAND
THREAD QUANTITY PER INCH3232
THREAD SERIESUNUN


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