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		                             National Stock Number: 5310-00-167-1344
  Federal Supply Class: 5310
  National Item Identification Number: 001671344
  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:
 | 1159 | 00198 | PRATT & WHITNEY CANADA CORP |  | 1159 | R1120 | SATAIR A/S |  | 278-156 | 45934 | ONTIC ENGINEERING & MANUFACTURING, INC |  | 20296 | 55176 | VSE AVIATION, INC. |  | 278-156 | 56705 | DONALLCO INC |  | 404 225 | 77294 | PIPER INDUSTRIAL MANUFACTURING COMPANY, LLC |  | 5W1268FA22 | 11530 | LOCKHEED MARTIN CORPORATION DIV LOCKHEED MARTIN INFORMATION SYSTEMS & GLOBAL SOLUTIONS |  | A1942 | 11599 | TRIUMPH ENGINE CONTROL SYSTEMS LLC |  | 802131-00 | 32345 | DEFENSE REDUCTION AGENCY |  | A63-48 | 74080 | HARVARD INDUSTRIES |  | 5310PL0890270 | 9009H | INSPEKTORAT WSPARCIA SIL ZBROJNYCH |  | AN315-4 | D9182 | ZF INDUSTRIEANTRIEBE WITTEN GMBH |  | 982737 | F0302 | SAFRAN TRANSMISSION SYSTEMS |  | 938.03.27.106 | S4080 | PILATUS AIRCRAFT LTD |  | N521 | 57733 | STEWART-WARNER CORPORATION |  | AN315-4R | 80205 | NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE |  | AN315-4R | 81352 | AIR FORCE-NAVY AERONAUTICAL SPECIFICATIONS PROMULGATED BY AERONAUTICAL STANDARDS GROUP |  | AN315-4R | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |  | FF-N-836 | 88044 | AERONAUTICAL STANDARDS GROUP DEPT OF NAVY AND AIR FORCE |   
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  Techincal Specification:
 | BEARING SURFACE FINISH | 125.0 MICROINCHES |  | BEARING SURFACE TYPE | CHAMFERED OR WASHER FACED |  | MATERIAL | STEEL OVERALL |  | NOMINAL THREAD SIZE | 0.250 INCHES |  | NUT HEIGHT | 0.172 INCHES MINIMUM AND 0.204 INCHES MAXIMUM |  | NUT STYLE | HEXAGON |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |  | SURFACE TREATMENT | CADMIUM OVERALL |  | THREAD CLASS | 3B |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 28 |  | THREAD SERIES | UNF |  | WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM |   
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