ISO 5421:1977

Overview

ISO 5421:1977 specifies the dimensions and tolerances for ground high speed steel (HSS) tool bits used in metal cutting and machining operations. Developed by ISO Technical Committee ISO/TC 29 (Small Tools), this international standard provides uniform specifications for various shapes of HSS tool bits, including round, square, rectangular, and trapezoidal sections. The standard was first published in August 1977 and is intended to ensure consistency, interchangeability, and quality in the manufacture of high speed steel tool bits.

Key Topics

• Scope: Defines dimensions for ground high speed steel tool bits in multiple cross-section shapes.