A chemical black finish is also referred to as black oxide or blackening. It is a ‘conversion coating’, which is a coating for metal where the surface of the part is subjected to a chemical or electrochemical process by the coating material, converting it into a decorative or protective substance. Chemical blackening is often used on fasteners made from stainless steel, copper, copper based alloys and zinc. Benefits of the process include the addition of mild corrosion resistance, improves aesthetic appearance and the minimizing of light reflection. Maximal corrosion resistance can be achieved when the oxide is impregnated with oil or wax. A chemical black finish with stainless steel uses hot black oxide which is a mixture of caustic, oxidizing and sulfur salts, and can be used on cast iron and low-carbon steel. There is also room-temperature blackening for stainless steel, which offers less abrasion resistance but similar corrosion protection as a hot blackening process. The process essentially involves embedding a pigment into the fixing which unlike paint or plating, does not alter the precise dimensions or surface texture.
General Description for A2 Grade 304 Stainless Steel Nuts
High quality Stainless Steel hexagon nuts also known as a full nuts made of durable A2 stainless steel and to DIN934 (Full Nuts) , DIN 6923( flange serrated nuts), DIN 982 ( Self-loking Nuts), DIN 315( Wing Nuts) , DIN 1587 ( Dome Nuts) standards. Full details and technical specifications below.
- These nuts can be tightened using a spanner, socket wrench as well as by hand. In addition, these nuts can also be used with bolts, screws and washers.
What is A2 Stainless Steel? A2 stainless steel is commonly referred to as 18-8 since it contains 18% chromium and 8% nickel. A2 is an austenitic stainless steel and is nonmagnetic.
Excellent corrosion resistance.
A2 is used in a wide range of applications in different industries such as the automotive industry for body paneling and bumpers etc. food and catering industries for the corrosion resistance, in the engineering and architecture industries, for the remote control and model making. In addition, it’s a favorite for many different DIY jobs in and around the home and garage for those jobs where a standard BZP fastener will not do. Handles extremely low and high temperatures
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We offer a shipping cost of £10.00 to Northern Ireland, Isle of Wight, Isle of man and the Scottish Islands and Highlands including AB30-38, AB44-56, FK17-99, G83, HS, KA, IV, KW, PH, PA, ZE.Our aim is for you to be 100% satisfied every time you shop with us. Occasionally though, we know you may want to return items. If you are not 100% satisfied with your purchase, we will gladly accept it back for a full refund provided your initial request to return the item is made within 30 days from the date of purchase.
If your initial request to return the item is after 30 days from the date of purchase, unfortunately we would not be able to accept the return request.
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