BoltsandNuts.com is a family owned full-line fastener distributor located in Perry, Ohio. We stock over 16,000 sku’s and operate out of a 30,000sqft facility. Our company was founded in 2013 with the boom of internet e-commerce. We can supply items like Hex Bolts, Flange Bolts, Socket Products, Screws, Nuts, Washers, Assortments, and much more. We have proven to be a reputable supplier to many different industries, and can supply anything from a single piece to full truck loads of fasteners. Our operations and dedicated team have over 100+ years of combined existing fastener experience. We look forward to serving you! 50 Pieces Total Provides Protection Against Loosening From Vibration Material: Alloy Steel | Finish: Zinc Yellow Inside Diameter: 0.512 Outside Diameter: 0.869 ASIN B0D77463B2 Brand BoltsandNuts.com Color Yellow Size Name 1/2 Metal Type Carbon Steel Unit Count 50 Count Part Number 50MLW8Y-50 Thread Size 1/2 Washer Type Split Lock Grade Rating Grade 8 Manufacturer BoltsandNuts.com Fastener Size 1/2 Material Type Alloy Steel Exterior Finish Zinc Number Of Items 50 Outside Diameter 0.87 inches