GB/T 4389-2013
Double-headed open-ended wrenches,double-headed box wrenches and combination wrenches.Maximum widths of heads (English Version)

Standard No.

GB/T 4389-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 4389-2013

Replace

GB/T 4389-1995

Scope

This standard specifies the maximum dimensions of the head shape of double-ended solid wrenches, double-ended torx wrenches, and dual-purpose wrenches. This standard applies to wrenches, torx wrenches and combination wrenches used to wrench bolts and nuts or other fasteners. The nomenclature and terminology of the above-mentioned wrenches are in accordance with the provisions of GB/T 4625.

GB/T 4389-2013 Referenced Document

• GB/T 3104 Fasteners--Widths across flats of hexagon products
• GB/T 4390 Wrench openings.Tolerances for general use
• GB/T 4393 Open end wrenches,box wrenches and combination wrenches.Technical specifications
• GB/T 4625 Assembly tools for screws and nuts—Nomenclature*， 2022-11-08 Update

GB/T 4389-2013 history

• 2013 GB/T 4389-2013 Double-headed open-ended wrenches,double-headed box wrenches and combination wrenches.Maximum widths of heads
• 1995 GB/T 4389-1995 Assembly tool for screws and nuts--open-end double-head engineers wrenches, double-head box wrenches and combination wrenches--Maximum outside dimensions of heads