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		                             National Stock Number: 5310-00-167-1355
  Federal Supply Class: 5310
  National Item Identification Number: 001671355
  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.) 
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  Manufacturer Information:
 | 218-20 | 99167 | HAMILTON SUNDSTRAND CORPORATION |  | AN345B1 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |   
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  Techincal Specification:
 | BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |  | COUNTERSINK ANGLE | 110.0 DEGREES NOMINAL NUT |  | MATERIAL | COPPER ALLOY OVERALL |  | NOMINAL THREAD SIZE | 0.073 INCHES |  | NUT HEIGHT | 0.043 INCHES MINIMUM AND 0.050 INCHES MAXIMUM |  | NUT STYLE | HEXAGON |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 72 |  | THREAD SERIES | UNF |  | WIDTH ACROSS FLATS | 0.150 INCHES MINIMUM AND 0.156 INCHES MAXIMUM |   
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