BS 949-1-1992 丝锥.第1部分:一般尺寸规格

标准号：BS 949-1-1992
中文标准名称：丝锥.第1部分:一般尺寸规格
英文标准名称：Screwing taps — Part 1: Specification of general dimensions
标准类型：J41
发布日期：1992/1/31 12:00:00
实施日期：1992/1/31 12:00:00
中国标准分类号：J41
国际标准分类号：25.100.50
适用范围：1.1 This Part of this British Standard specifies thegeneral dimensions and tolerances for screwing tapsfor the following threads:a) ISO metric coarse pitch series threadscomplying with BS 3643;b) ISO metric fine pitch series threads complyingwith BS 3643;c) Unified (ISO inch) general-purpose screwthreads, coarse thread series (UNC), from No. 1to No. 12 and from in to 4 in diametercomplying with BS 1580-1, BS 1580-2 andBS 1580-3;d) Unified (ISO inch) general-purpose screwthreads, fine thread series (UNF), from No. 0 toNo. 12 and from in to 1 in diameter complyingwith BS 1580-1, BS 1580-2 and BS 1580-3;e) British Standard Whitworth (BSW) threadsfrom A in to 4 in diameter and British StandardFine (BSF) threads from in to 3 in diametercomplying with BS 84;f) British Association (BA) threads from No. 14 toNo. 0 complying with BS 93.1.2 The sizes of taps specified include those suitablefor the tapped holes for sparkings plugs and thosesuitable for the tapped holes for fittings for steelconduit specified in BS 4568.NOTE The titles of the publications referred to in this standardare listed on the inside back cover.