Nord-Lock Wedge Locking Washers – Steel (Delta Protekt) Washer with Zinc Flake Coating, Vibration Resistant Safety Washers for 3/4 Inch Bolts – 4 Pairs

Description

Product Overview

Nord-Lock wedge-locking washers are precision‑engineered components designed to work with 3/4 inch steel bolts and nuts in a wide range of industrial applications. Each washer is fabricated from high‑strength steel and treated with a zinc‑flake coating that delivers exceptional corrosion resistance even in harsh, moisture‑laden environments. The unique wedge‑locking principle creates a tension‑based lock that resists loosening under severe vibration, shock, and dynamic loading, making these washers a trusted solution for critical joint security. The product dimensions of 1.21 x 0.13 x 0.79 inches and a weight of 2.31 pounds per pack of four glued pairs provide a compact yet robust profile that fits easily into standard fastening assemblies. The washers are supplied in pre‑glued pairs, ensuring consistent spacing and alignment while simplifying installation and reducing the risk of human error. This design eliminates the need for additional locking devices, saving both time and material costs while delivering a reliable, repeatable performance across multiple cycles of assembly and disassembly.

Usage

These wedge‑locking washers are ideally suited for applications where vibration and dynamic forces are prevalent. In the energy sector, they secure turbine housings, generator frames, and solar panel mounting brackets, preventing loosening caused by wind‑induced vibrations. Robotics manufacturers rely on the washers to maintain the integrity of robotic arm joints and actuator housings, where rapid acceleration and deceleration generate significant cyclic loads. Transportation equipment, including railcar couplers, truck chassis components, and aircraft structural fasteners, benefits from the washers’ ability to maintain torque without the need for frequent re‑torquing. Offshore platforms and marine vessels use the washers to lock down pipe supports, deck fittings, and ballast tank connections, where saltwater exposure demands superior corrosion protection. In construction and bridge building, the washers secure steel beam connections, truss assemblies, and formwork brackets, ensuring long‑term stability despite wind and traffic‑induced vibrations. The versatility of the product also extends to mining and quarrying equipment, where heavy machinery experiences constant shock and vibration, and to manufacturing lines where precision equipment requires dependable fastening solutions.

Why Choose Us

Choosing Nord-Lock wedge‑locking washers means selecting a product backed by decades of engineering expertise and a global reputation for reliability. The washers are manufactured under strict quality‑control protocols that meet ISO 9001 standards, guaranteeing consistent material properties and coating thickness across every batch. The zinc‑flake coating is applied using a patented process that provides a uniform, dense layer, delivering corrosion resistance that exceeds typical hot‑dip galvanizing performance. Our glued‑pair packaging ensures that each washer set maintains the precise spacing required for optimal tension creation, eliminating the variability that can arise from manual assembly. In addition, Nord-Lock offers comprehensive technical support, including installation guidelines, torque recommendations, and load‑capacity charts, enabling engineers to integrate the washers seamlessly into their designs. We stand behind our products with a responsive after‑sales service team ready to address any questions or concerns, reinforcing our commitment to customer satisfaction and long‑term partnership.

Key Features

• High‑strength steel construction provides robust load‑bearing capacity for demanding applications.
• Zinc‑flake coating offers superior corrosion resistance, extending service life in harsh environments.
• Wedge‑locking design creates tension‑based security that resists loosening from vibration and shock.
• Pre‑glued pairs ensure consistent spacing, quick installation, and reduced assembly errors.
• Dedicated technical support and after‑sales service guarantee reliable performance and customer confidence.

FAQ

What bolt sizes are compatible with these washers?

The washers are specifically sized for 3/4 inch (19.05 mm) steel bolts and nuts, making them ideal for standard fastener dimensions used in many industrial applications.

How does the wedge‑locking mechanism differ from traditional lock washers?

Traditional lock washers rely on friction to prevent rotation, which can slip under high vibration. The wedge‑locking system creates a mechanical tension that locks the bolt in place, providing a more reliable and repeatable locking action that is less susceptible to loosening.

Can these washers be used in corrosive environments?

Yes. The zinc‑flake coating provides excellent protection against moisture, salt spray, and chemical exposure, making the washers suitable for marine, offshore, and chemical processing settings.

Are the glued pairs reusable after removal?

While the washers can be re‑used, the adhesive bond may weaken after multiple cycles. For critical applications, it is recommended to replace the washers with a new glued pair to ensure optimal performance.

What is the load rating for these washers?

The load rating depends on the bolt size, material grade, and installation torque. Detailed load tables are available in the Nord-Lock technical documentation, and our support team can assist in selecting the appropriate configuration for your specific application.