Pin: parallel

ISO 2338

ISO 2338 - Parallel pins, of unhardened steel and austenitic stainless steel

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Unhardened parallel pins, made to m6 or h8 and in diameters from 0,6 to 50 mm, a wider range than the hardened ISO 8734 dowel pin; unlike the withdrawn DIN 7, the length l is measured over the ends. The pin is a plain cylinder with a chamfer c of about 15 degrees on both ends; the end shape is left to the manufacturer, and a radius or a dimpled end is permissible instead of the chamfer. The diameter is made in one of two tolerance classes that share one dimension table: m6 with a surface roughness of Ra 0,8 micrometres or h8 with Ra 1,6 micrometres; other tolerances are agreed between customer and supplier. Steel St, 125 HV30 to 245 HV30, and austenitic stainless steel A1 to ISO 3506-1, 210 HV30 to 280 HV30, have the same dimensions. Covers nominal diameters from 0,6 to 50 mm with lengths from 2 to 200 mm.