5310-00-639-1298 NUT,PLAIN,HEXAGON Index 5310-00-639-1300 NUT,PLAIN,HEXAGON

National Stock Number:
5310-00-639-1299

Federal Supply Class:
5310

National Item Identification Number:
006391299

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:
FFN83681348FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC


Techincal Specification:
BEARING SURFACE TYPECHAMFERED OR WASHER FACED
NOMINAL THREAD SIZE1.250 INCHES
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 4 STYLE
NUT STYLEHEXAGON
NUT HEIGHT1.030 INCHES MINIMUM AND 1.094 INCHES MAXIMUM
MATERIALSTEEL OVERALL
THREAD CLASS2B
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH12
THREAD SERIESUNF
WIDTH ACROSS FLATS1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM


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