JIS B 0403:1995 English Edition

Castings - System of dimensional tolerances and machining allowances

Abstract

This Standard specifies a system of tolerance grades and required machining allowance grades for the dimensions of castings. It is applicable to the dimensions of cast metals and their alloys produced by various casting manufacturing processes [but see also Introduction g) and clause 5]. This Standard applies both to general tolerances and/or required machining allowances given on a drawing and to individual tolerances and/or required machining allowances which are shown immediately following a specific dimension (see clause 12). The system specified applies when the foundry provides the pattern or die equipment or accepts responsibility for providing it.

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