5310-01-568-1172 WASHER,FLAT Index 5310-01-568-1132 WASHER,LOCK

National Stock Number:
5310-01-568-1142

Federal Supply Class:
5310

National Item Identification Number:
015681142

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:
AEN04C250000BB0A1105047THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
N220N03CADNN56301BAA180204AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED


Techincal Specification:
BEARING SURFACE TYPEFLAT
PART NAME ASSIGNED BY CONTROLLING AGENCYHEX NUT, INCH SERIES
MATERIAL DOCUMENT AND CLASSIFICATIONA563M, PROPERTY CLASS 10S ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL OVERALL
NOMINAL THREAD SIZE0.250 INCHES
NUT HEIGHT0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
NUT STYLEHEXAGON
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIESUNC


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