Flat washers are used under the head of a bolt or nut across the area of the support to prevent pull through. Description;Made of Zinc plated carbon steel, a replacement for damaged washer in your machine, furniture, or other things.Washers are normally used to distribute loads of threaded bolts, screws, and nuts evenly as the fastener is tightened.Intended for general use under the head of a bolt or nut in order to provide a smooth surface... Intended for general use under the head of a bolt or nut in order to provide a smooth surface. Minerallac Company - 1/2 FLAT CUT WASHER - 100 COUNT (40340J Rubber Washers Diall M3 Carbon Steel Flat Washer, (Dia)3mm, Pack Of 100 Washers For Screws Apply for electrical connections on household and commercial appliances and in threaded bolt connections. Plain Carbon Steel - naintersupply Zinc plated carbon steel for corrosion resistance, for outside applications, easy to install. Size: 70mm x 40mm x 3mm/2., 76 x 1., 57 x 0., 12(Inner Dia x OD x T)