Flat Washer Form C - A2 (304) Grade Stainless Steel

Our Form C Flat Washers in A2 (304) Grade Stainless Steel are high-quality metric fastening components designed to provide effective load distribution and reliable support when used with compatible nuts, bolts and threaded fasteners.

Manufactured from A2 (304) grade stainless steel, these washers offer excellent resistance to corrosion in many indoor and outdoor environments, making them a popular choice for engineering, fabrication, construction, maintenance and general assembly applications.

Featuring the Form C large outside diameter design, these flat washers provide a wider bearing surface than standard Form A washers of the same nominal thread size. This helps distribute clamping pressure over a larger area, reducing the risk of damage to softer materials and supporting secure fastening arrangements.

Available in metric sizes from M4 to M16, these stainless steel washers are suitable for a wide range of fastening applications where durability, corrosion resistance and a larger bearing surface are required.

Whether used in machinery assembly, structural fabrication, stainless steel installations or general engineering work, A2 Stainless Steel Form C Washers provide a practical and dependable fastening solution.

Key Features

• Form C flat washer design

• Manufactured from A2 (304) grade stainless steel

• Excellent corrosion resistance in suitable environments

• Large outside diameter for improved load distribution

• Available in metric sizes M4 to M16

• Designed for use with compatible metric bolts and nuts

• Helps spread clamping loads over a wider surface area

• Suitable for engineering, fabrication and construction

• Ideal for stainless steel fastening applications

• Suitable for indoor and many outdoor applications

• Durable and long-lasting fastening component

• Available in a range of sizes to suit different requirements

Available Sizes

• M4

• M5

• M6

• M8

• M10

• M12

• M14

• M16

Select the required washer size from the available product options.

Typical Applications

Ideal for:

• Engineering and machinery assembly

• Stainless steel fabrication

• Construction and installation

• Metalworking and fabrication

• General mechanical fastening

• Equipment maintenance and repairs

• Automotive and agricultural applications

• Brackets and mounting assemblies

• Outdoor fastening applications

• General workshop and industrial use

Technical Specification

Product Type: Flat Washer
Washer Form: Form C
Material: Stainless Steel
Stainless Steel Grade: A2 (304)
Nominal Sizes: M4–M16
Washer Profile: Flat / Large Outside Diameter
Finish: Natural Stainless Steel
Corrosion Resistance: Suitable for Many Indoor and Outdoor Environments
Application: Load Distribution & Fastening Support
Thread Compatibility: Corresponding Metric Bolts and Nuts

What Is a Form C Flat Washer?

A Form C flat washer features a larger outside diameter than a standard Form A washer of the same nominal size.

This increased bearing surface helps distribute the clamping load over a wider area, making Form C washers particularly useful when fastening components where a standard washer may provide insufficient support.

Common applications include securing brackets, sheet metal, fabricated components and machinery assemblies.

Benefits of A2 (304) Stainless Steel

A2 stainless steel, commonly associated with 304-grade stainless steel, is widely used in fastening applications because of its combination of durability and corrosion resistance.

Its advantages include:

• Good resistance to atmospheric corrosion

• Suitable for many indoor and outdoor installations

• Durable performance in general engineering applications

• Attractive natural stainless steel finish

• Low maintenance requirements

• Compatibility with suitable stainless steel nuts and bolts

For highly corrosive, marine or chloride-rich environments, A4 (316) stainless steel may be more appropriate.

Why Choose Form C Stainless Steel Washers?

The A2 (304) Stainless Steel Form C Flat Washer is an excellent choice for professional engineers, fabricators, installers and maintenance personnel requiring a corrosion-resistant washer with a larger bearing surface.

With sizes available from M4 to M16, these washers provide a versatile solution for a wide range of mechanical fastening and assembly applications.

Please Note: Always select the correct washer size for the bolt or threaded fastener being used. Confirm outside diameter, thickness and applicable dimensional standard where precise fitment is required. A2 stainless steel is not recommended for every marine or highly corrosive environment. Washers are supplied in the selected size and quantity.

Delivery Information

Fast, Reliable Delivery We understand that getting your orders promptly is important to you. That's why we partner with our trusted delivery services Fedex to ensure your order is delivered to your doorstep in a timely and efficient manner.

Delivery Options You can choose from a range of delivery options, including standard and express shipping, to suit your needs. Shipping costs and estimated delivery times will be displayed during the checkout process, so you can make the choice that best fits your requirements.

Order Tracking For your convenience, we provide order tracking information so you can monitor the status of your shipment in real-time. You'll receive an email with tracking details once your order is on its way.

Returns & Refunds

Our Satisfaction Guarantee:  We stand behind the quality of our products. If you're not completely satisfied with your items, you can return them within 14 days of purchase for a full refund or exchange. Please make sure the item is in its original condition, with all packaging and accessories included.

Special Order Items: If an item is marked as special order, then this order cannot be cancelled or returned. Please see our Terms and Conditions for more information.

Easy Return Process: To initiate a return, simply contact our customer support team. They will guide you through the process and provide you with a return authorisation number. Returns are processed promptly, and you'll receive your refund or replacement as soon as possible.

Return Shipping:  If you're returning an item due to a defect or an error on our part, we will cover the return shipping costs. If you're returning an item for other reasons, the cost of return shipping will be your responsibility.

Contact Us

Your satisfaction is our top priority. If you have any questions or concerns about our Delivery & Returns policy, please don't hesitate to get in touch with our dedicated customer support team. We're here to assist you and ensure your Tec Products experience is exceptional.

We appreciate your trust in Tec Products, and we look forward to serving you with top-quality products and outstanding customer service.

Thank you for choosing Tec Products!

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