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		                        | National Stock Number:
 5310-00-052-2040
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 000522040
 
 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:
 
 | 358-22 | 90454 | COMBUSTION ENGINEERING INC CHATTANOOGA WORKS |  | 820-4529802PC4 | 80064 | NAVAL SHIP SYSTEMS COMMAND |  | 909J147PC5 | 59042 | CBS BROADCASTING INC. |  | 909J147PC5 | 79500 | WESTINGHOUSE ELECTRIC CORP |  | E231-327PC327-9 | 90454 | COMBUSTION ENGINEERING INC CHATTANOOGA WORKS |  | 909J147PC5 | 94259 | BECHTEL MARINE PROPULSION CORPORATION |  | NF42444PC20 | 23230 | AMEC FOSTER WHEELER NORTH AMERICA CORP. DBA FOSTER WHEELER |  | F44245-1-3 PT.1-24 | 50024 | COLTEC INDUSTRIES INC DBA FAIRBANKS MORSE ENGINE FM/ALCO |  | F44245-1-3 PT.1-24 | 7PZX0 | FAIRBANKS MORSE, LLC |  | E231-358PC22 | 90454 | COMBUSTION ENGINEERING INC CHATTANOOGA WORKS | 
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 Techincal Specification:
 
 | CRITICALITY CODE JUSTIFICATION | ZZZY |  | REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS | MATERIAL WILL BE IN ACCORDANCE WITH NAVICP MECH; ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS. | 
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