In aerospace, defense, and high-tech manufacturing, even the smallest failure can have big consequences. Electrical interference. Premature corrosion. Mechanical wear. These are the problems that bring operations to a halt—and they’re the exact problems The Lindgren Group was built to solve.

Through precise and performance-driven metal finishing services, we help industries overcome these challenges with proven solutions like gold plating, hardcoat anodizing, zinc nickel plating, silver plating, tin plating, and connector plating.

The Problem: Harsh Environments and High Expectations

Whether you’re manufacturing a flight-critical aerospace component or designing connectors for battlefield communications, your materials must withstand:

  • Corrosive environments
  • Mechanical wear and vibration
  • High or fluctuating temperatures
  • Demands for electrical conductivity
  • Tight regulatory and safety standards

That’s where metal finishing becomes essential—not optional.

The Lindgren Group’s Solution: Purpose-Built Finishes for Demanding Applications

We don’t just coat parts—we engineer finishing solutions that make your products safer, stronger, and longer-lasting. Each metal finish serves a specific purpose depending on your material, function, and environment.

Let’s break it down.

1. Gold Plating: For Precision & Electrical Performance

Gold is unmatched in its conductivity and corrosion resistance. That’s why it’s a top choice for connector plating in:

  • Aerospace avionics
  • Defense communication systems
  • High-reliability electronics
  • Satellites and navigation tech

Our gold plating ensures a stable electrical connection with virtually no signal loss—even after years of use.

2. Hardcoat Anodizing: For Rugged Aluminum Protection

Hardcoat anodize creates a durable, wear-resistant layer on aluminum that resists abrasion, chemicals, and corrosion.

Common uses include:

  • Aircraft structural components
  • Defense-grade gear housings
  • Industrial machinery exposed to heavy wear

This finish maintains dimensional accuracy while offering exceptional surface hardness—ideal for parts that move or get touched.

3. Zinc Nickel Plating: For Long-Term Corrosion Resistance

Zinc nickel plating is a high-performance, cadmium-free finish that offers superior protection in moisture-heavy, high-salt, or extreme environments.

Industries we support with zinc nickel:

  • Automotive underbody and engine systems
  • Aerospace fasteners and fittings
  • Defense vehicles and armor components

This finish is trusted for its consistent performance and compliance with environmental standards.

4. Silver Plating: For High-Current and High-Frequency Applications

Need a finish that handles power? Silver plating delivers the thermal and electrical conductivity required for:

  • RF and microwave connectors
  • High-voltage switching systems
  • Power distribution equipment

Silver also performs well in elevated temperatures, making it a go-to for demanding electrical setups.

5. Tin Plating: For Economical, Everyday Conductivity

Tin plating is ideal when you need:

  • Solderability
  • Oxidation protection
  • Cost-effective solutions for high-volume electronics

We apply tin finishes on everything from consumer electronics to automotive terminals and telecom infrastructure.

6. Connector Plating: Small Parts, Big Responsibility

Connectors are the unsung heroes of any electrical system. Our connector plating services use gold, silver, or tin depending on your spec—ensuring your components stay connected, even under stress.

Applications include:

  • Avionics
  • Satellite communication systems
  • Military-grade radios
  • Electric vehicle connectors

Industries We Serve

The Lindgren Group works with companies that can’t afford guesswork or shortcuts:

  • Aerospace – NADCAP-certified processes for flight-ready parts
  • Defense – Plating solutions that meet MIL-SPEC standards
  • Electronics – From micro-connectors to high-frequency devices
  • Automotive – Engineered protection against the elements
  • Industrial – Durable finishes for heavy machinery and tooling
  • Renewables – Coatings that boost longevity in solar, wind, and storage

Why Companies Trust The Lindgren Group

✔️ Certified & Proven – ISO, NADCAP, and MIL-SPEC certified

✔️ Highly Technical Team – Decades of plating, coating, and industry-specific expertise

✔️ Turnkey Capabilities – From small connector runs to large-scale industrial finishing

✔️ Custom Engineering – We solve problems others don’t want to touch

Our team works closely with engineers, buyers, and production teams to match the right finish to the right part, every time.

Request a Custom Quote

Your parts are only as strong as their finish. Let us help you choose the right metal finishing process for your environment, budget, and performance expectations.