... ,din931size of the product: all sizesurface of the product: yellow zinc plated , zinc plated , black , plain , H.G.Dpacking of the ... galvanization, and Dacromet. Our products are produced in conformity with DIN, ANSI, AS, BS, JIS, GB and ... you are interested in cooperating with us or our products, please don't hesitate to contact us. If ... are welcomed to visit us. hexagon bolt DIN933 yellow zinc plated