4540-01-031-1457 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-031-1459 NUT,PLAIN,HEXAGON

National Stock Number:
5310-01-031-1458

Federal Supply Class:
5310

National Item Identification Number:
010311458

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:
12387305-3619207U S ARMY TANK AUTOMOTIVE COMMAND AMSTA-IM-MM
MS51967-3696906MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M


Techincal Specification:
BEARING SURFACE TYPEFLAT
DEPARTURE FROM CITED DOCUMENTNAVORD OD42046
NUT HEIGHT1.062 INCHES NOMINAL
NUT STYLEHEXAGON
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE1.250 INCHES
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH7
WIDTH ACROSS FLATS1.875 INCHES NOMINAL
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B


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