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National Stock Number: 5310-01-372-3940
Federal Supply Class: 5310
National Item Identification Number: 013723940
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:
5/16-18UNC-2B T YII GR316 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH | 5/16-18UNC-2B TY2 GR316 | 80204 | AMERICAN NATIONAL STANDARDS INSTITUTE INCORPORATED | 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 | DEPARTURE FROM CITED DOCUMENT | AS MODIFIED BY MATERIAL | HARDNESS RATING | 95.0 ROCKWELL B MINIMUM | MATERIAL | STEEL COMP 316 OVERALL | NOMINAL THREAD SIZE | 0.3125 INCHES | NUT HEIGHT | 0.258 INCHES MINIMUM AND 0.273 INCHES MAXIMUM | NUT STYLE | HEXAGON | WIDTH ACROSS FLATS | 0.489 INCHES MINIMUM AND 0.500 INCHES MAXIMUM | THREAD DIRECTION | RIGHT-HAND | THREAD CLASS | 2B | THREAD SERIES | UNC | THREAD QUANTITY PER INCH | 18 |
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