IS 12687-1989
Small Tools—Specification for SUBLAND Twist Drills with Morse Taper Shafts for Drilling Prior to Tapping

Standard No.

IS 12687-1989

Release Date

1990

Published By

IN-BIS

Latest

IS 12687-1989

Scope

This standard covers dimensions and other requirements for the subland twist drills with morse taper shanks for producing holes and countersinks prior to tapping screw threads M 8 to M 30 ( coarse pitch ) conforming to IS 10952 : 1984.

IS 12687-1989 history

• 1990 IS 12687-1989 Small Tools—Specification for SUBLAND Twist Drills with Morse Taper Shafts for Drilling Prior to Tapping