BS EN ISO 4759-3:2016
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07-31-2016
This part of ISO4759 specifies tolerances for flat washers of product grades A, C and F with nominal diameters of 1mm to 150mm inclusive, designed to be used in bolted joints in combination with bolts, screws, studs and nuts. This part of ISO4759 may be applied to non-flat washers however it does not include all the tolerances related to these washers. It applies to non-captive and captive washers, and to standard and non-standard washers. It does not apply to dynamic disc springs. Washers of product grades F and A are intended to be used with bolts, screws, studs and nuts of product grades A and B; washers of product gradeC are intended to be used with bolts, screws, studs and nuts of product gradeC. NOTE The product grade refers to a specific tolerance range related to dimensional and geometrical characteristics (product gradeF for fine tolerances, product gradeA for precise tolerances, product gradeC for large tolerances). AnnexA presents tolerances taken from ISO286‑1 and ISO286‑2 .
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