... ,din931size of the product: all sizesurface of the product: yellow zinc plated , zinc plated , black , plain , H.G.Dpacking of the product: ... spring lock washers, wood screws, tapping screws, drilling screws, chipboard screws, drywall screws, furniture screws, rivets, anchors and many ... dip galvanization, and Dacromet. Our products are produced in conformity with DIN, ANSI, AS, BS, JIS, GB and ISO ...