4540-01-090-9087 HEATING ELEMENT,ELECTRICAL,NONIMMERSION TYPE Index 5310-01-090-9090 NUT,PLAIN,CLINCH

National Stock Number:
5310-01-090-9088

Federal Supply Class:
5310

National Item Identification Number:
010909088

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:
1/2INUNC3BSS57472ALL MANUFACTURERS, INC.


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
MATERIAL DOCUMENT AND CLASSIFICATIONAMS 5639 ASSN STD SINGLE MATERIAL RESPONSE OR QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 304 OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NUT HEIGHT0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM
NUT STYLEHEXAGON
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH13
THREAD SERIESUNS
WIDTH ACROSS FLATS0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM


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