Purvis Industries

The letter "H" indicates screw conveyor with helicoid flighting. The figures to the left of the letter indicate the nominal outside diameter of the conveyor in inches. The first figure following the letters is twice the diameter of the couplings in inches. The last two figures indicate the nominal thickness of flighting at the outer edge in 1/64 in. Right hand flight helix wraps around the pipe in a clockwise direction.

Martin Conveyor Screw, 18 in Dia, 141 in Length, Steel, Right Hand Flight Type

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  Martin_10H306-R_Catalog.pdf https://www.purvisindustries.com//ASSETS/DOCUMENTS/ITEMS/EN/Martin_10H306-R_Catalog.pdf
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  Catalog https://www.purvisindustries.com//ASSETS/DOCUMENTS/ITEMS/EN/Martin_10H306-R_Catalog.pdf
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  Martin_10CH2203_Specification_Sheet.pdf https://www.purvisindustries.com//ASSETS/DOCUMENTS/ITEMS/EN/Martin_10CH2203_Specification_Sheet.pdf
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  Specification Sheet https://www.purvisindustries.com//ASSETS/DOCUMENTS/ITEMS/EN/Martin_10CH2203_Specification_Sheet.pdf