Delta Coating Nuts

Delta coating nuts are nuts with a new inorganic anti-corrosive zinc/aluminum flake basecoat. Delta coating is suitable for alloyed and unalloyed steel and aluminum. As a more environmental protection surface treatment system, Delta coated nuts are more and more popular in the fasteners industry. And more and more customers prefer Delta coating nuts made in China with high quality and low price. With more advanced test equipment coming and upgrade internally, our factory has more confidence to expand the market of Delta coating nuts and service our customers better.

High performance corrosion protection;
Chromium free;
No hydrogen embrittlement;
Low curing temperature, no risk of loosing the hardness of heat-treated parts;
Colored coatings possible;
Integrated lubricants.

Coefficient of friction is one of the most important requirements for Delta coating nuts. Our own laboratory has 3 sets of equipment to test the coefficient of friction. They are 3000NM, 10000NM and 30000NM. Besides common test report, material cert. and certificate of origin, we can also provide friction coefficient report for nuts size M8-M72.