3439-01-508-1808 ROD,WELDING Index 3439-01-508-1810 HOLDER,ELECTRODE,WELDING

National Stock Number:
5310-01-508-1809

Federal Supply Class:
5310

National Item Identification Number:
015081809

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:
6395396-731442NORTHROP GRUMMAN SYSTEMS CORPORATION
6395396-753711NAVAL SEA SYSTEMS COMMAND


Techincal Specification:
BEARING SURFACE TYPECHAMFERED
HOLE CONFIGURATION STYLECONFIGURATION A
NUT HEIGHT0.212 INCHES MINIMUM AND 0.226 INCHES MAXIMUM
NUT STYLEHEXAGON
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-286, FORM 1 OR 2, CLASS A FED SPEC 1ST MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY K-500 OVERALL
NOMINAL THREAD SIZE0.250 INCHES
SPECIAL FEATURESNUT MATERIAL IS ANNEALED AND AGE HARDENED; DRILLED HOLES ARE THROUGH THREE SIDES OF NUT (REFER TO DRAWING SPECIFICATIONS)
THREAD SERIESUNIFIED NATIONAL COARSE (UNC)
THREAD QUANTITY PER INCH20
WIDTH ACROSS FLATS0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2B


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