IS 10952 : 1984/ISO 2306 : 1972 Recommendations for drills for use prior to tapping screw threads (superseding IS:3230 & 5617)

UDC 621.951.4 PGD 32
Reaffirmed 2021

National Foreword

This Indian Standard, which is identical with ISO 2306-1972 `Drills for use prior to tapping screw threads', issued by theInternational Organization for Standardization (ISO) was adopted bythe Indian Standards Institution on the recommendation of the SmallTools Sectional Committee and approved by the Engineering Divisioncouncil.

Cross References

International Standard Indian Standard
ISO/R 7 IS 554 : 1975 Dimensions for pipe threads where pressure tight joints are required on the threads
ISO/R 228 IS 2643 : Part I : 1975 Pipe threads for fastening purpose : Part I Basic profiles and dimensions
ISO/R 235 IS 5100 : 1969 Twist drills, parallel shank, stub series for right hand cutting
IS 5101 : 1969 Twist drills, parallel shank, jobber series
IS 5103 : 1969 Twist drills, morse taper shanks
ISO R 261 IS 4218 : Part 2 : 1976 ISO metricscrewthreads : Part 2 Pitch diameter combinations