FASTENERS 101™
Plating, Painting, Coatings & Finishes


Protect Your Fasteners

Fastener Coating, Plating and Finishes can add an extra layer of corrosion protection to your fastener assemblies. Below is everything you will need to know about all the different available options.

Fastener Finishes:

  • Black Oxide

    black oxide stainless steel screw

    Black oxide fasteners are stainless steel fasteners that have been chemically treated to alter certain qualities of the material, most notably the color. The treatment adds a mild corrosion and abrasion resistance and reduces the now black oxide stainless steel fasteners reflective properties. To achieve maximum corrosion and abrasion resistance, the black oxide is sealed with oil and the excess is spun off, which complies with military specifications as a Class 4 finish. Black oxide fasteners are commonly used in the following industries: automotive, motorcycle, guns, knives, archery. Shop our Black Oxide Fasteners by clicking the link.

    What is Black Oxide?

  • Hot Dip Galvanizing

    hot dipped galvanized bolt

    Hot dip galvanizing is a process that adds a layer of corrosion resistance by dipping fabricated steel into a kettle containing molten zinc. The HDG process creates a tightly bonded alloy for superior corrosion resistance and harsh environment applications. HDG products must be used exclusively when applied, meaning that a plain zinc nut or stainless nut cannot be applied to an HDG bolt. HDG nuts are threaded slightly larger than other nuts to make room for the thickness of the galvanized coating. Shop our Hot Dipped Galvanized Fasteners by clicking the link.

  • Zinc Plating

    zinc plated lag screw

    Zinc plated steel is very common in the fastener industry. Zinc adds a layer of corrosion resistance to plain alloy steel. Clear zinc has a light, shiny color and blue zinc has a bright blue hue. Zinc plated steel is not suitable for extreme environment use, as it is not as resistant to corrosion as hot dipped galvanized. Shop our Zinc Plated Fasteners and Grade 8 Zinc Plated Fasteners by clicking the links.

  • Blue Climaseal®

    tapcon masonry screw

    Blue coating applied to masonry anchors that provides extra corrosion resistance. Uniquely applied in multiple stages through dip-spin technology. This finish is used in our Tapcon Masonry Screws.

  • Chrome Plating

    Chrome plating is the process of adding a thin layer of chromium to an object. There are many benefits to chrome plating such as a shiny decorative look and providing an extra layer of corrosion resistance. Chrome comes in two types: decorative and hard. Decorative chrome has a visually pleasing look and is very durable. Base materials for this type of plating include steel, zinc, copper and aluminum alloys. Due to its high level of corrosion resistance it is often used in cars, kitchen utensils and varying other tools. Hard Chrome, on the other hand, is used to minimize friction, increase abrasion resistance and deter wear of parts. It can also help prevent part seizing (referred to galling in the industry) and improve oxidization resistance. This type of chrome is often used in the automotive industry.


Fastener Finishes, Coatings and Plating Chart

While Albany County Fasteners does not currently carry all of these varieties, we want to make sure you are able to make an informed decision on what to choose. Please visit our custom plating page to find out about the different options we offer.

Protective Layer How Resistant to Corrosion Base Material
Aluminum (Hot-Dip) Interior: Very Resistant
Exterior: Very Resistant
Steel
Anodizing Interior: Extremely Resistant
Exterior: Extremely Resistant
Aluminum
Black Oxide Interior: Very Resistant
Exterior: Requires Rust Inhibitor
Steel
Blueing Interior: Semi Resistant
Exterior: Semi Resistant
Steel
Brass (Electroplating) Interior: Semi Resistant
Exterior: Semi Resistant
Steel
Bronze (Electroplating) Interior: Semi Resistant
Exterior: Semi Resistant
Steel
Cadmium (Electroplating) Interior: Extremely Resistant
Exterior: Extremely Resistant
Steel
Chromate (Clear) Interior: Very Resistant
Exterior: Very Resistant
Zinc and Cadium Fasteners
Chromate (Color) Interior: Very Resistant
Exterior: Very Resistant
Zinc and Cadium Fasteners
Chromium (Electroplating) Interior: Fairly Resistant
Exterior: Fairly Resistant
Various Metals
Copper (Electroplating) Interior: Semi Resistant
Exterior: Semi Resistant
Various Metals
Dichromate Interior: Very Resistant
Exterior: Very Resistant
Zinc and Cadium Fasteners
Laquering Interior: Vary
Exterior: Vary
All Metals
Lead-Tin Interior: Semi Resistant
Exterior: Semi Resistant
Steel
Nickel (Bright) Interior: Extremely Resistant
Exterior: Fairly Resistant
Various Metals
Nickel (Dull) Interior: Extremely Resistant
Exterior: Fairly Resistant
Various Metals
Passivating Interior: Extremely Resistant
Exterior: Extremely Resistant
Stainless Steel
Phosphate (Color Coating) Interior: Extremely Resistant
Exterior: Extremely Resistant
Steel
Phosphate (Zinc or Manganese) Interior: Fairly Resistant
Exterior: Fairly Resistant
Steel
Rust Inhibitors Interior: Vary
Exterior: Vary
Steel
Silver (Electroplaing) Interior: Extremely Resistant
Exterior: Extremely Resistant
All Metals
Tin (Electroplating) Interior: Extremely Resistant
Exterior: Extremely Resistant
All Metals
Tin (Hot Dip) Interior: Extremely Resistant
Exterior: Extremely Resistant
All Metals
Zinc (Electroplating) Interior: Very Resistant
Exterior: Very Resistant
Steel
Zinc (Hot Dip Galvanizing) Interior: Very Resistant
Exterior: Very Resistant
Steel
Zinc (Mechanically Deposited) Interior: Very Resistant
Exterior: Very Resistant
Steel

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