Midwest Fasteners Class 8 Zinc Plated Steel General-Purpose Flat Washer

Midwest Fasteners Class 8 Zinc Plated Steel General-Purpose Flat Washer

The Midwest Fasteners Class 8 Zinc Plated Steel Flat Washer is a general-purpose load-spreading washer built from Class 8 steel with a zinc-plated finish for corrosion resistance, available across a size range from 10mm x 20mm up to 16mm x 30mm. Flat washers like these seat under the head of a bolt or nut to distribute clamping load over a wider surface area, protect the work surface finish, and provide a smooth, even bearing surface so fasteners torque down consistently. Every size in this family is manufactured to Class 8 material specifications, giving each washer the added strength needed to hold up under higher-torque bolted connections without deforming or spreading out under load. The zinc plating resists surface rust and corrosion in typical indoor and light outdoor use across the full size range, making these washers a practical, repeatable choice for maintenance shops, fabrication work, and general assembly tasks where a dependable washer is needed regardless of the specific size selected.

Key Features

• Product Type: Flat Washer designed to seat under a bolt head or nut and spread clamping load across a wider bearing surface.
• Size Range: Available from 10mm x 20mm through 16mm x 30mm, allowing the correct washer to be selected for the fastener and application at hand.
• Material & Finish: Steel construction with a Zinc Plated finish for added corrosion resistance in general shop and jobsite environments, consistent across every size in the family.
• Grade: Class 8 steel for strength and durability under higher-torque bolted connections, regardless of the washer size chosen.
• Consistent Fit: Flat profile provides an even bearing surface that helps fasteners torque down smoothly and consistently across the size range.
• Surface Protection: Helps protect the work surface finish from marring and distributes clamping load to reduce point-loading damage.

Technical Specifications

• Product Type: Flat Washer
• Product Finish: Zinc Plated
• Grade: Class 8
• Country of Origin: China
• Product Material: Steel
• Size Range: 10mm x 20mm to 16mm x 30mm

Typical Applications

• General equipment assembly and maintenance repairs where a bolted connection needs a load-spreading washer.
• Fabrication and metalworking projects requiring a durable, zinc-plated washer under higher-torque fasteners.
• Jobsite and shop hardware kits for building out bolt-and-nut assemblies across multiple fastener sizes.
• Replacement hardware for worn or missing washers in existing bolted connections.

Why Midwest Fasteners?

Midwest Fasteners builds this flat washer family to Class 8 material standards with a zinc-plated finish across the full 10mm x 20mm to 16mm x 30mm size range, giving contractors, maintenance techs, and fabricators a dependable washer for everyday bolted connections no matter the size required. Consistent sizing, material and finish mean these washers perform predictably whether they're used in a maintenance shop, on a fabrication job, or as replacement hardware in the field, so crews can standardize on one trusted washer family across a wide range of bolted assemblies.