Specifications Product Name : Screw Washer Inside Diameter: 10mm/0.39 Split Lock Washers Outside Diameter: 0.63 / 16mm Flat Washers Outside Diameter:0.78 / 20mm Screw Washer Thickness：1.2mm/0.05”; 2mm/0.08” Material: 304 Stainless Steel Color: Sliver tone Weight:200g Package Content : 50 x Flat washer50 x Split Lock Washer Package Included: 50 x Split Lock Washers, 50 x Flat Washers. Split Lock Washers & Flat Washers Inner Dia: 0.39 / 10mm; Split Lock Washers Outer Dia: 0.63 / 16mm; Flat Washers Outer Dia: 0.78 / 20mm . These washers are made of 304 Stainless Steel, resist loosening caused by vibration and corrosion. Washer's surface are smooth can reduces friction between the fasteners, preventing isolates, preventing loosening and dispersion pressure. Flat washers are used to increase the load bearing surface under a fastener's head by distributing the load through the washer.Split Lock washers apply greater bolt tension per unit of applied torque as well as a hardened bearing surface adding to a more uniform torque control. Perfect for applications that require a larger amount of pressure distribution such as drywall, fencing, mounting fixtures and sheet metal.Ideal for electrical connections on household and commercial appliances, automotive and marine uses in which the power source has a threaded/bolt-type connection. UPC 794832955323 ASIN B08HVN337N Brand ZAYI Color Silver Set Name 50-Piece Set Size Name M10 Metal Type Stainless Steel Unit Count 50 Count Item Weight 0.2 kg Thread Size M10 Washer Type Flat, Split Lock Finish Types Polished Manufacturer ZAYI Fastener Size M10 Fastener Type Flat Washer Item Diameter 0.63 inches Material Type Stainless Steel Item Thickness 0.05 inches Exterior Finish Stainless Steel Number Of Items 1 Number of Pieces 100 Outside Diameter 0.63 inches Screw Head Style Flat Washer Compatibility M10 bolts, bolts, screws Compatible Groove Diameter 1E+1 millimeters