GB/T 70.2-2008

Hexagon socket button head screws

GB/T 70.2-2015

Hexagon socket button head screws

ISO 7380-2004

Hexagon socket button head screws

JIS B1174-1994

Hexagon socket button head screws

JIS B1174-2006

Hexagon socket button head screws

NF E25-109-2001

Hexagon socket button head screws

NF E25-126-2004

Hexagon socket button head screws

NF E25-126-1997

Hexagon socket button head screws

NF E25-109-1983

Hexagon socket button head screws

NF E25-109-2011

Hexagon socket button head screws

GB/T 70.2-2000

Hexagon socket button head screws

ISO 7380-1997

Hexagon socket button head screws

JIS B1174-2017

Hexagon socket button head screws

JIS B1174-2000

Hexagon socket button head screws

ISO 7380-1-2022

Hexagon socket button head screws

ISO 7380-1-2023

Hexagon socket button head screws

ISO 7380-1-2011

Hexagon socket button head screws