Custom Two Hole Washer Sheet Metal Stamping Double Hole Washer

الوصف

What is a Two Hole Washer?

A two hole washer is a specialized type of flat washer featuring two pre-drilled holes instead of the standard single center hole. These holes are typically aligned parallel to each other and are designed to accommodate two separate fasteners, such as screws or bolts. Unlike conventional washers, which primarily distribute load and prevent surface damage, the two hole washer provides enhanced alignment, stability, and resistance to rotation when installed. It is commonly used in applications where precise positioning or securing of multiple components is required.

Materials

• Carbon Steel: Durable and cost-effective, suitable for general industrial use.

• Stainless Steel: Offers corrosion resistance, ideal for outdoor or humid environments (e.g., grades 304 or 316).

• Brass: Provides good corrosion resistance and electrical conductivity, often used in plumbing or electrical applications.

• Aluminum: Lightweight and resistant to corrosion, common in aerospace or automotive industries.

• Plastic (Nylon/PVC): Used for insulation or in environments where metal corrosion is a concern.

Surface Treatments

• Zinc Plating: Enhances corrosion resistance and provides a shiny finish.

• Hot-Dip Galvanizing: Offers thick, durable coating for extreme outdoor conditions.

• Black Oxide: Improves aesthetic appeal and provides mild corrosion resistance.

• Chrome Plating: Adds hardness, wear resistance, and a decorative appearance.

• Phosphating: Improves adhesion for paint or oil and offers rust protection.

Specifications

• Sizes: Outer diameters typically range from 10 mm to 50 mm; inner hole diameters vary based on fastener requirements (e.g., M4 to M12 bolts).

• Thickness: Usually between 1 mm to 5 mm, depending on material and load-bearing needs.

• Hole Spacing: Standardized distances between holes (e.g., 10 mm, 15 mm) to match common fastener patterns.

• Standards: Complies with ISO, DIN, or ASTM specifications for consistency in manufacturing.

Application Fields

• Construction: Securing structural beams, railings, or scaffolding components.

• السيارات: Fastening parts in engines, chassis, or interior assemblies.

• الإلكترونيات: Mounting circuit boards or securing components to prevent short circuits.

• Furniture Manufacturing: Assemblying frames or joints where alignment is critical.

• Agriculture: Used in machinery like tractors or harvesters for durable connections.

Excellent Case: Securing Solar Panel Mounting Systems

In a large-scale solar farm project, two hole washers made from hot-dip galvanized carbon steel were employed to mount solar panels onto aluminum rails. The washers were placed under bolt heads to distribute load and prevent corrosion-induced damage. The two holes allowed for simultaneous fastening of adjacent rail sections, ensuring perfect alignment and eliminating slippage during high winds or vibrations. This design reduced installation time by 20% and enhanced the system’s longevity, demonstrating how two hole washers improve efficiency and reliability in renewable energy infrastructure.