M3-M12 Countersunk Washers | Stainless Steel & Brass Decorative Finishing Washers

Precision-engineered M3-M12 Countersunk Washers (also known as Finishing Washers or Cup Washers) designed to provide a clean, professional look when used with countersunk screws. These decorative washers distribute the load while allowing the screw head to sit flush or recessed within the washer’s “cup.” Available in 304/316 Stainless SteelSolid Brass, and Anodized Aluminum. Ideal for furniture, marine interiors, and high-end cabinetry.

  • Sizes: Metric M3, M4, M5, M6, M8, M10, M12
  • Material: Stainless Steel / Brass / Aluminum / Steel
  • Process: CNC Turned (Precision) / Stamped (Economy)
  • Feature: Enhances aesthetics and prevents screw pull-through in soft materials.
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Premium M3-M12 Countersunk Washers: The Ultimate Decorative Fastening Solution

Our M3-M12 Countersunk Washers, frequently referred to as Finishing Washers or Cup Washers, are engineered to combine structural integrity with an elegant aesthetic finish. Designed specifically to complement countersunk (CSK) head screws, these decorative washers feature a recessed center that allows the screw head to sit perfectly flush or neatly nested. Whether you are assembling luxury furniture or outfitting a marine vessel, our finishing washers protect the substrate surface while providing a high-end, professional appearance.

As a leading countersunk washer factory, we offer both CNC turned precision washers for high-end projects and stamped cup washers for high-volume industrial applications, available in 316 Stainless Steel and Polished Brass.

Key Advantages of Our Finishing & Cup Washers

  • Aesthetic Excellence: Hides rough edges of pre-drilled holes and provides a smooth, rounded trim around the screw head.
  • Load Distribution: Increases the bearing surface area, preventing the screw from pulling through or damaging soft materials like wood, plastic, or leather.
  • Precision Fit: Our CNC machined series offers tight tolerances and a mirror-like polish, ideal for visible hardware in high-end cabinetry.
  • Material Versatility: Available in Solid Brass for antique styles and Anodized Aluminum for lightweight, colorful modern designs.

Technical Data: M3 – M12 Countersunk Washer Dimensions

Select the correct metric finishing washer size based on the outer diameter (OD) and screw head compatibility.

Screw SizeInner Dia (mm)Typical OD (mm)Height (mm)
M33.2 mm9.0 – 10.0 mm2.0 mm
M44.3 mm11.0 – 13.0 mm2.5 mm
M55.3 mm14.0 – 16.0 mm3.0 mm
M66.4 mm16.0 – 18.0 mm3.5 mm
M88.4 mm20.0 – 25.0 mm4.5 mm

Applications in High-End Finishing & Design

Our M3-M12 Finishing Washers are essential for various visible fastening sectors:

  • High-End Furniture: Securing panels and decorative trims in luxury wardrobes and desks.
  • Marine Interiors: Using SS316 finishing washers for mounting hardware on yacht dashboards and cabins.
  • Automotive Restoration: Providing a period-correct decorative look for classic car interiors.
  • Architectural Signage: Mounting plaques and glass panels where the fastener is a key design element.

Countersunk Washer Frequently Asked Questions

Q: What is the difference between Turned and Stamped washers?
A: Turned washers are CNC machined from solid bar stock, offering a thicker profile and superior finish. Stamped washers (Pressed) are thinner and more cost-effective for large-scale production.

Q: Can I get these in custom colors?
A: Yes, our Aluminum Countersunk Washers can be anodized in Red, Blue, Black, Gold, and other custom colors for high-performance tuning or branding.

Source M3-M12 Countersunk Washers from a Professional Manufacturer

Seeking bulk finishing washers with premium polishes and guaranteed quality? We support global wholesale and OEM projects. Contact us today for a free quote and technical samples!

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Common Names

Finishing Washers, Cup Washers, Recessed Washers

Size Range

M3, M4, M5, M6, M8, M10, M12

Material Options

SS304, SS316, Brass (C3604), Aluminum

Manufacturing

CNC Machined / Pressed

Surface Finish

Polished, Nickel Plated, Anodized, Plain

Application

Furniture, Marine, Automotive Interiors, DIY