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		                        | National Stock Number:
 5310-01-020-0924
 
 Federal Supply Class:
 5310
 
 National Item Identification Number:
 010200924
 
 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:
 
 | 3-85972-2000 | 17765 | THE BOEING COMPANY |  | 3-85972-2000 | 81205 | THE BOEING COMPANY | 
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 Techincal Specification:
 
 | BEARING SURFACE TYPE | FLAT |  | COUNTERSINK ANGLE | 110.0 DEGREES NOMINAL NUT |  | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-A-225/6,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |  | MATERIAL | ALUMINUM ALLOY 2024 OVERALL |  | NOMINAL THREAD SIZE | 2.500 INCHES |  | NUT HEIGHT | 0.500 INCHES NOMINAL |  | NUT STYLE | HEXAGON |  | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | SRF2.30 FSCM 81205 MFR REF SINGLE TREATMENT RESPONSE OVERALL |  | SURFACE TREATMENT | PAINT OVERALL |  | THREAD CLASS | 2B |  | THREAD DIRECTION | RIGHT-HAND |  | THREAD QUANTITY PER INCH | 12 |  | THREAD SERIES | UN |  | WIDTH ACROSS FLATS | 2.740 INCHES NOMINAL | 
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