Carriage Bolt Washers for Square Neck Bolts Washer for Carriage Bolts

Beschrijving

A Carriage Bolt Washer is a flat, circular disc with a central hole, designed to be used with a carriage bolt (also known as a coach bolt). The washer helps distribute the load and prevent damage to the fastened material. Carriage bolts typically have a smooth, domed head and a square section beneath the head that prevents rotation when tightened. The washer ensures a secure fit and improves the bolt’s clamping force.

Materials of Carriage Bolt Washers

Common materials include:

Carbon Steel – Standard for general-purpose applications.
Stainless Steel (e.g., 304, 316) – Offers corrosion resistance for outdoor or marine environments.
Zinc-Plated Steel – Provides basic rust protection.
Galvanized Steel – Enhanced corrosion resistance due to zinc coating.
Brass – Used in electrical and decorative applications.
Aluminum – Lightweight and corrosion-resistant.
Nylon/Plastic – Non-conductive and used in electrical or lightweight assemblies.

Surface Treatments

Plain/Uncoated – No additional finish, suitable for indoor use.
Zinc Plating – Electroplated zinc for rust resistance.
Hot-Dip Galvanizing – Thick zinc coating for harsh environments.
Black Oxide – Provides mild corrosion resistance and a dark finish.
Chrome Plating – Decorative and corrosion-resistant.
Phosphate Coating – Improves paint adhesion and corrosion resistance.

Manufacturing Processes

Stamping/Punching – Washers are cut from sheet metal using dies.
Machining – Precision washers are turned or milled for tight tolerances.
Heat Treatment – Hardening for high-strength applications.
Coating/Plating – Applied for corrosion resistance or aesthetics.

Applications of Carriage Bolt Washers

Construction & Woodworking – Securing beams, decks, and wooden structures.
Furniture Assembly – Used in chairs, tables, and cabinets.
Automotive & Machinery – Fastening components in vehicles and industrial equipment.
Marine & Outdoor Structures – Stainless steel washers prevent rust in wet conditions.
Electrical Installations – Non-conductive washers for grounding or insulation.
Agricultural Equipment – Heavy-duty fastening in farming machinery.

Excellent Case

Golden Gate Bridge (USA) – Stainless steel carriage bolt washers used in corrosion-resistant fasteners.
IKEA Furniture Assembly – Zinc-plated washers ensure durability in flat-pack furniture.
Heavy-Duty Trailer Manufacturing – Galvanized washers prevent loosening under vibration.
Marine Dock Construction – 316 stainless steel washers resist saltwater corrosion.
Solar Panel Mounting Systems – Aluminum washers provide lightweight, weather-resistant fastening.