Black Oxide Vs Stainless Steel Bolts

Screws treated with a high quality coating consisting of zinc and aluminum flakes are especially resistant to corrosion.

Black oxide vs stainless steel bolts.

Black oxide fasteners made from stainless steel usually grades 18 8 or 304 have been chemically treated to alter certain qualities of the material most notably the color. Charcoal grey or black. Customers can therefore conveniently buy enough black oxide nuts and bolts to support their businesses and processes. Black oxide or blackening is a conversion coating for ferrous materials stainless steel copper and copper based alloys zinc powdered metals and silver solder.

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. I don t unfortunately know what kinda of stainless. Alloy steel aluminum brass silicon bronze and stainless steel are just some of the materials that fasteners are manufactured in. I m wondering if a black oxide finish on stainless steel is more or less durable then simple stainless steel.

It is used to add mild corrosion resistance for appearance and to minimize light reflection. Truck tool rental. Brass screws brass is very reactive with aluminum and brass screws will cause substantial corrosion of an aluminum. 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.

To achieve maximal corrosion resistance the black oxide must be impregnated with oil or wax. Black oxide stainless steel screws are sold in quantities from the hundreds to the thousands. The combination of material treatment hardening and coating aka plating are essential to determining the strength and appropriate application for each fastener. Carbon steel t bolt black oxide finish 1 1 2 threaded length 2 length partially threaded 1 2 13 unc threads made in us pack of 2 5 0 out of 5 stars 2 misc.

Get free shipping on qualified black oxide stainless steel bolts or buy online pick up in store today in the hardware department. We ve been distributing black oxide fasteners and more since 1947 and we supply fasteners in bulk and in custom packaging and. Usually combined with an oil dip. The treatment also adds a mild corrosion and abrasion resistance in addition to the plain stainless steel s nature and reduces the now black oxide stainless steel.

A chemical discoloration which does not add to part thickness. Ferrous metals and stainless steel. Hardware essentials 1 4 in 20 tpi x 2 in. Set your store.

Rust resistance comes from the oil only. Stainless steel eye bolt with hex nut 10 pack model 320756 15 61 15 61. As is the case with carbon steel screws a plated stainless steel screw is less likely to corrode aluminum. Black oxides on stainless.