The right surface treatment transforms a standard fastener into a high-performance component. We offer 6+ coating and plating options tailored to your application requirements — from extreme corrosion resistance (1000h+ salt spray) to low-friction wear protection. Every treatment is verified through rigorous testing and meets RoHS and REACH environmental standards.
Coating & Plating Options
Select the optimal surface treatment for your application
Dacromet
Zinc-aluminum flake coating with exceptional corrosion resistance. Chrome-free formulation ideal for automotive and outdoor applications.
- Color Silver-gray
- Thickness 5 – 15 μm
- Standard ISO 10683
- Best for Extreme corrosion environments
Zinc-Nickel Plating
Electroplated Zn-Ni alloy offering the best balance of corrosion resistance and cost-effectiveness. Excellent for general-purpose fasteners.
- Color Silver, blue, black passivate
- Thickness 8 – 15 μm
- Standard ISO 19598
- Best for General-purpose corrosion protection
DLC Coating
Diamond-like carbon coating for extreme wear resistance and ultra-low friction. Ideal for high-cycle moving components.
- Color Black
- Thickness 1 – 3 μm
- Hardness 2500 – 4000 HV
- Best for Wear resistance, low friction
TiN Coating
Titanium nitride coating with distinctive gold appearance. High hardness and excellent wear resistance for decorative and functional use.
- Color Gold
- Thickness 2 – 4 μm
- Hardness 2300 – 2500 HV
- Best for Wear resistance, decorative
Passivation
Chemical passivation treatment for stainless steel fasteners. Removes free iron and enhances the natural chromium oxide protective layer.
- Color Natural stainless
- Standard ASTM A967
- Process Citric or nitric acid
- Best for Stainless steel corrosion resistance
Black Oxide
Chemical conversion coating producing a matte black finish with mild corrosion resistance. Often paired with oil for enhanced protection.
- Color Matte black
- Thickness < 1 μm
- Standard MIL-DTL-13924
- Best for Aesthetic finish, light protection
Testing & Quality Verification
Every coating is validated through standardized testing
Salt Spray Test
ASTM B117 neutral salt spray testing to verify corrosion resistance duration. Tested to white rust and red rust thresholds.
Coating Thickness
X-Ray Fluorescence measurement for precise coating thickness verification. Ensures consistent coverage across all surfaces.
Adhesion Test
Cross-hatch method per ISO 2409 to verify coating bond strength. No flaking or delamination accepted.
Not Sure Which Coating to Choose?
Tell us your application requirements — environment, expected lifespan, aesthetic preferences — and we'll recommend the optimal surface treatment for your fasteners.