Jis G3539 Pdf [better]

This standard covers carbon steel wires that are intended to be shaped at room temperature. Cold heading involves "upsetting" the metal (pushing it into a die) to form heads on fasteners.

JIS G 3539:1991 Carbon steel wires for cold ... - Intertek Inform jis g3539 pdf

The standard strictly controls the chemical content to ensure cold heading performance. While the exact numbers are protected by copyright, the general requirements are: This standard covers carbon steel wires that are