IS 12689-1989
Small Tools—SUBLAND Twist Drills with Parallel Shanks for Through and Countersunk Holes for Slotted Cylindrical Head Screws—Specifications

Standard No.

IS 12689-1989

Release Date

1990

Published By

IN-BIS

Latest

IS 12689-1989

Scope

This Indian Standard covers dimensions and other requirements for the subland twist drills with parallel shanks for producing clearance holes and counterbores for cheese head screws M3 to M10 — medium series conforming to IS 3406 ( Part 2) : 1986 'Dimensions for countersinks and counterbores : Part 2 Counterbores ( second revision )'.

IS 12689-1989 history

• 1990 IS 12689-1989 Small Tools—SUBLAND Twist Drills with Parallel Shanks for Through and Countersunk Holes for Slotted Cylindrical Head Screws—Specifications