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while the black oxide finish helps to protect the screw from corrosion
1/2-13 x 6 Hex Tap Bolt Fully Threaded 18-8 Stainless Steel is a type of bolt with a hexagonal head and a fully threaded shank
It is made from alloy steel and heat-treated to a Grade 8 strength rating
They are zinc plated for corrosion resistance
1/2-20 Serrated Flange Hex Lock Nuts Case Hardened HR15N 78/90 Zinc And Bake M14-2.0 while the black oxide finishThese 1 2 20 Serrated Flange Hex Lock Nuts are made of HR15N case hardened steel and are zinc and bake coated for corrosion resistance. They have a serrated flange that digs into the mating surface to prevent loosening, and a hex head for easy installation. These nuts are ideal for use in high vibration applications, such as automotive and industrial machinery. They meet the specifications of IFI 100 and are available in a variety of sizes and
