COATINGS & PLATING
One variable to consider when ordering fasteners is the type of coatings & platings to get them in. There are different coatings that can be used for different applications. It is therefore important to always try and match the type of coating to the reason you are getting the fasteners in the first place. If you are interested in protecting the fasteners from corrosion, some of the common coatings you can use for this include:
Victory Bolt & Specialty has always provided a superior chrome-over-stainless product. We are proud to offer Eagle Shield™, a unique development in plating technology that offers decorative chrome performance and appearance with less expense to our customers. Eagle Shield™ offers a non-tarnishing finish that provides superior salt spray performance compared to decorative hexavalent chrome plating solutions. Eagle Shield™ provides superior corrosion resistance to 316 stainless steel fasteners due to free iron transfer rusting. Eagle Shield™ has a bright white color and has a consistent color and corrosion protections for each and every lot produced.
Eagle Shield™ Crush Comparison
Eagle Shield (chrome over) versus 316 Stainless Steel
VictoryKote is a non-seize coating for stainless to stainless fastener assemblies. VictoryKote will prevent gauling even when using nylon insert locknuts.
- MUCH LONGER SALT SPRAY RESISTANCE THAN GALVANIZED TO ASTM A153
- IMPROVED SALT SPRAY RESISTANCE TO ORGANIC ZINC WITH GOOD NUT FIT
- Highly corrosion and abrasion resistant.
- The coating is hard, non magnetic, weld-able, and spark-free.
- It is chip proof and amenable to crimping, bending, and forming.
- Highly heat resistant-working temp to 1200F
- Totally non-toxic and heavy metal free
- Good Anti Galling properties and low co-efficient of friction. It is a replacement for Cadmium
- No Hydrogen embrittlement
Xylan® Coatings are a family of fluoropolymer coatings designed for use on various types of OEM components and fasteners, including xylan coated bolts for added corrosion resistance and color matching. Xylan coating is a dry film lubricant. Available in many colors and will not fade.
The passivation process returns the stainless steel or other metals back to its original specifications by removing unwanted debris and oils from the surface and then submerging the part into a passivating bath. When a part is machined, various particles can permeate the surface of the base metal, weakening it’s resistance to corrosion and making the part more susceptible to environmental factors. Debris, dirt and other particles and residue such as free iron, grease and machining oils all affect the strength of the natural surface and can become embedded in the surface during the machining process. These often go unseen to the human eye and are often the cause of the deterioration.
Zinc Plated Alloy Steel is a common material that fasteners are manufactured in. Zinc plating creates corrosion resistance and gives the bolts a shiny finish. Zinc plated alloy steel is most often available in Grade A, Grade C, Grade 2, Grade 5 and Grade 8.
Teflon coated fasteners, sometimes referred to as xylan coated fasteners, are a fluropolymer coating that offers a 2200 hour resistance to corrosion. Teflon coated fasteners are viewed by many engineers as a cost effective method of keeping corrosion under control, while not substituting for weaker alloys such as stainless steel.
HOT DIP GALVANIZED
Galvanizing is coating involving the application of a layer of zinc. Hot dipped galvanizing puts the thickest possible coating on the metal resulting in superior corrosion resistance. Due to the thickness of the coating hot dipped galvanized bolts are not compatible with other nuts. Galvanized nuts are tapped slightly larger than other nuts to accommodate this coating.