IS 6175 : Part 4 : 1991 Screwing Taps - Part 4 : Long Shank Machine Screwing Taps for ISO Metric Screw Threads Sizes from M3 to M24 - Specification

1 Scope

This standard covers the dimensions and requirements for longshank machine screwing taps for ISO metric screw threads in thesize range M3 to M24 with coarse and fine pitches, conforming to IS4218 : Parts 1 to 6 : 1976 and with a relieved shank.

IS4218ISO metric screw threads:

Part 1 :1976 Part 1 Basic and design profiles

Part 2 :1976 Part 2 Diameter pitch combinations

Part 3 :1976 Part 3 Basic dimensions for designprofiles

Part 4 :1976 Part 4 Tolerancing system

Part 5 :1979 Part 5 Tolerances

Part 6 :1978 Part 6 Limits of sizes for commercialbolts and nuts

2 References

IS 6171 :1991Screwing taps - Technical supply conditions

IS 6173 : Part 1 :1991 Screwing taps - Dimensions and tolerancesonthreaded portion of screwing taps:Part 1 For ISO metric screw threads

IS 6175 : Part 3 :1991 Screwing taps : Part 3 Hand and shortmachinescrewing taps for ISO metric screw threads sizesM3 to M68 with coarse pitches and M3 to M100 withfine pitches