DU-BRO Bolt Sets with Lock Nuts – High-Strength RC Hardware Kits

The DU-BRO Bolt Sets With Lock Nuts provide strong, dependable hardware for RC aircraft, cars, boats, and many other hobby projects. Made from aircraft-quality, high-strength steel, these bolt sets give builders confidence when assembling critical components where reliability truly matters. Each package includes everything you need for secure, vibration-resistant fastening: four bolts, four flat washers, and four lock nuts.

These bolt sets are ideal for mounting landing gear, engine firewalls, servo trays, control horns, wheel pants, and many other parts that experience stress and vibration. The included nylon-insert lock nuts help prevent loosening during flight or high-RPM operation, making them a smarter choice than standard nuts when durability is important.

The flat washers protect your mounting surfaces and help spread the load, reducing the chance of wood compression or damage to thin materials. DU-BRO’s consistent machining and quality control ensure that every bolt, washer, and nut fits correctly and holds tightly.

Available in several sizes and weights to match different project needs:

• #174 – 4 grams per package

• #175 – 6 grams per package

• #176 – 8 grams per package

• #177 – 14 grams per package

These bolt sets are perfect for pilots who want dependable hardware for new builds, repairs, or upgrades. Whether you're mounting your engine, reinforcing key structures, or replacing old hardware, DU-BRO’s Bolt Sets With Lock Nuts offer professional-grade strength in a convenient, ready-to-use package.

Built for durability and trusted by hobbyists worldwide, these bolt sets ensure your model stays securely assembled and ready for safe, confident performance.