Discover the A4-50 HEX BOLT DIN931 M39 X400, made from high-quality 316 stainless steel for superior strength and durability. This metric hex bolt features a hex external drive and a length of 400mm, perfect for a variety of applications. Ideal for Australian consumers seeking reliable stainless fasteners, it is designed to prevent galling and offers impressive breaking strength. Find detailed technical guides on properties, torque specifications, and more.