1/4-20 x 1/2" Button Head Socket Cap Screws, Allen Socket Drive, Black Oxide, Alloy Steel, Fully Threaded, Machine Thread, Quantity 50

1/4-20 x 1/2" Button Head Socket Cap Screws, Allen Socket Drive, Black Oxide, Alloy Steel, Fully Threaded, Machine Thread, Quantity 50

• Thread Diameter 0.250"
• Head Diameter 0.437"
• Head Height 0.132"
• Allen Hex Drive Size 5/32"
• Button socket cap screws offer a wider bearing surface and high tensile strength but are still low profile like other socket cap screws.

<b> Fastenere Button Head Socket Cap Screws</b> <br> Button Head Socket Cap Screws are commonly used in machine parts, die fixturing, and clamping. <br> The socket head enables driving where there is not sufficient space for wrenches or sockets. <br> Button socket cap screws offer a wider bearing surface and high tensile strength but are still low profile like other socket cap screws. <br> Black Oxide, blackening, oxidizing, oxiding, black passivating, gun bluing . . . these terms all refer to the process of forming a black iron oxide on the surface of ferrous metals. <br> Black oxide is a conversion coating formed by a chemical reaction produced when parts are immersed in the alkaline aqueous salt solution operated at approximately 285 degrees F. <br> The reaction between the iron of the ferrous alloy and the hot oxide bath produces a magnitite (Fe3 O4) on the actual surface of the part. <br> The black oxide process is a chemical conversion coating. This means that the black oxide is not deposited on the surface of the substrate like nickel or zinc electroplating. <br> Instead, the black oxide coating is produced by a chemical reaction between the iron on the surface of the ferrous metal and the oxidizing salts present in the black oxide solution. <br> These oxidizing salts include penetrates, catalysts, activators and proprietary additives which all take part in the chemical reaction. <br> The result of this chemical reaction is the formation of black iron oxide, magnetite (Fe3O4), on the surface of the metal being coated. <br> Black oxide has a range of unique properties and benefits that can be applied to a variety of industries. <br>