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		                        | National Stock Number:
 5310-01-556-5557
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 015565557
 
 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:
 
 | 0162320 | 0Y3H3 | FASTENAL COMPANY |  | 10039382 | 61C19 | MIL-COTS CORPORATION |  | 12759-00533 | 0Y3H3 | FASTENAL COMPANY |  | 31085R1 | 338X5 | ND DEFENSE LLC | 
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 Techincal Specification:
 
 | MATERIAL | STEEL OVERALL |  | III PART NAME ASSIGNED BY CONTROLLING AGENCY | NUT, M16 CLASS 10 PHC FLG |  | PROPRIETARY CHARACTERISTICS | PACS |  | SPECIAL FEATURES | NOMINAL SIZE: M16; FINISH: PHC |  | SURFACE TREATMENT | ZINC OVERALL | 
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