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		                             National Stock Number: 5310-01-226-4952
  Federal Supply Class: 5310
  National Item Identification Number: 012264952
  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:
 | MIL-DTL-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |  | MIL-S-1222 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |   
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  Techincal Specification:
 | BEARING SURFACE TYPE | WASHER FACED |  | MATERIAL | STEEL OVERALL |  | NOMINAL THREAD SIZE | 0.500 INCHES |  | NUT HEIGHT | 0.427 INCHES MINIMUM AND 0.448 INCHES MAXIMUM |  | NUT STYLE | HEXAGON |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |  | SURFACE TREATMENT | PASSIVATE OVERALL |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 13 |  | THREAD SERIES | UNIFIED NATIONAL COARSE (UNC) |  | WIDTH ACROSS FLATS | 0.736 INCHES MINIMUM AND 0.750 INCHES MAXIMUM |   
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