The Allied Bolt Flat Washer (vendor part 314107, Millennium part 536689) is a 1/4 in x 1 in stainless steel washer packed 100 to a carton for pole line hardware crews needing corrosion-resistant fasteners in smaller quantities. It distributes bearing load evenly under bolt and screw heads, protecting wood poles and mounting brackets from crushing on aerial installs. The stainless build holds up in coastal and high-moisture environments where standard galvanized parts degrade faster. Stock it with Millennium's stainless lag screws and hex bolts for a matched fastener set.