For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. The following normative documents contain provisions which, through reference in this text, constitute provisions of ISO 7091. When soft material pieces are clamped, or large clearance holes in the workpiece are used, the user should check the technical suitability of this type of washer. If dimensions other than those listed in this International Standard are required, they should be selected from those given in ISO 887. 一hexagon nuts of product grade C in property classes up to and including 6 一hexagon bolts and screws of product grade C in property classes up to and including 6.8 Washers of hardness class 100 HV are suitable for ISO 7091 specifies the characteristics of normal-series, product-grade-C plain washers in the 100 HV hardness class and of nominal sizes (nominal thread diameters) ranging from 1,6 mm to 64 mm inclusive. ISO 7091:2000 pdf free.Plain washers一Normal series一Product grade C
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