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		                        | National Stock Number:
 5310-01-396-0983
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 013960983
 
 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:
 
 | 1DM6 | 12603 | CLARK EQUIPMENT CO |  | 1DM6 | 77237 | DANA OFF HIGHWAY PRODUCTS, LLC | 
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 Techincal Specification:
 
 | BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |  | HARDNESS RATING | 30.0 ROCKWELL C MAXIMUM |  | NOMINAL THREAD SIZE | 6.0 MILLIMETERS |  | NUT HEIGHT | 4.90 MILLIMETERS MINIMUM AND 5.20 MILLIMETERS MAXIMUM |  | NUT STYLE | HEXAGON |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD PITCH IN MILLIMETERS | 1.00 |  | THREAD SERIES | ISO M |  | THREAD TOLERANCE CLASS | 6H INTERNAL |  | WIDTH ACROSS FLATS | 9.78 MILLIMETERS MINIMUM AND 10.00 MILLIMETERS MAXIMUM | 
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