The M30 Thin Fine Pitch Hexagon Nuts - 1.5mm Pitch (DIN 439) - Marine Stainless Steel (A4) has the following features:DIN 439 Manufacturing Standard, Marine Stainless Steel (A4) Material, 316 Marine Grade Stainless Steel (A4) Material Specification, Natural Finish, 1.5mm Thread Pitch, Metric Metric or Imperial?, M30 (30mm) Thread Size, 15mm Nut Thickness (T), +0/-1.1mm Nut Thickness (T) Tolerance, 46mm Socket Size (J), +0/-1mm Socket Size (J) Tolerance. Discover more about the Metric Thin Fine Pitch Hexagon Nuts range. Metric Thin Fine Pitch Hexagon Nuts feature tighter threads for greater thread engagement, as well as a low-profile design for space conservation. Materials Thin Fine Pitch Hexagon Nuts can be manufactured from a wide number of materials, including standard A2 and A4 Stainless Steel, Aluminium, Phosphor Bronze and PEEK. Metric Thin Fine Pitch Hexagon Nuts These components are manufactured according to DIN 439, and are available in metric diameters ranging from M8 to M36. A number of ISO standard thread pitches are also available for each nut size. Imperial Thin Fine Pitch Hexagon Nuts UNF threaded components are available in AccuScrews' imperial Thin Hexagon Nuts range as standard.