Best Countersunk Washers in 2026

20 pcs Aluminum Gaskets for M3 Screw

Material: Aluminum Alloy

M3 Special Countersunk Washer for your DIY Drone, make your FPV frame more unique and popular

★Material: Made of alloy steel, good hardness, low temperature strength and corrosion resistant.

★Size: 9 Sizes of the most commonly used flat washers, M2 M2.5 M3 M4 M5 M6 M8 M10 M12.

★Quantity: It contains 9 sizes totally 684pcs, each size comes in a little poly bag organized in a little compartmentalized box. Perfect for having around the house and doing small projects.

Ideal for increasing the load bearing surface under a fastener's head

Prevents a nut, bolt or screw from pulling through the material

Used in applications where a decorative appearance is important

Works on most project items: These U.S.A. designed round top countersunk finishing washers are made from super-durable proprietary nylon. They are excellent for adding a touch of finishing quality to any KYDEX holster, home improvement project, cabinet work, art project, automotive trim, and much more. They hide the edge of counter sunk flat head beveled screws to create a smooth, safe contact surface while hiding the ugly hole created by most drills.

Designed for beveled head screws: These colored round top finishing washers are 0.530 inch in diameter and feature a 0.375 inch inner bevel diameter. Their through-hole is 0.215 inches in diameter and will fit most common flat head decking screws, upholstery screws, computer cabinet screws, automotive trim screws and much more. These can also be used with other types of screw heads and will hide any underside drill hole that is below their outer diameter in size.

Included in this offer: Each package of HolsterSmith USA designed colored nylon round top finishing washers contains 50 washers in the selected color. The color of these washers are vibrant and throughout the nylon material. Their color cannot be rubbed off or smeared. They resist oil, paint, furniture polish, auto cleaners and other common household cleaning solutions.

Finish Washers Are Designed To Accommodate The Heads Of A Countersuck Screw In Order To Provide A Finished Appearance

Prevents A Nut, Bolt Or Screw From Pulling Through The Material

Brass Plated

These Countersunk Washers are made from 100% premium 18-8 (304) stainless steel, one of the best performing corrosion-resistant metals and more environmentally friendly than other metal materials on the market today.  

We put these Countersunk Washers in Sturdy Transparent boxes, and use partitions to distinguish different sizes of Washers, so as to help customers more convenient use and long-term storage of these Countersunk Washers

Cup Countersunk Washer Assortment Set Includes 7 Most Used Sizes: #4 #6 #8 #10 #12 #14 #16；It can be used in a variety of scenarios

MATERIAL: Made of high quality 304 Stainless Stee, not easy to rust, anti-moisture, anti-oxiclation, corrosion resistant, acid/alkali .

PACKING QUANTITY: 160Pcs finishing cup washer 4 sizes: 40Pcs for each 6#, 8#, 10#, 12#, clip-1Pcs.

SUITABLE FOR: Prevents a nut, bolt or screw from pulling through the material, finish washers are designed to accommodate the heads of a countersuck screw in order to provide a finished appearance.

Made of high-quality 304 stainless steel, durable and long service life.

The shiny washer makes the screw recessed in the center, giving a clean, decorative appearance, not easy to slide, and more convenient and quick to use.

The smooth washer is designed to accommodate the head of a countersunk screw to provide a finished appearance. The compact and portable design will bring you more convenience and speed.

Standard hole position, uniform force, not easy to slip, easy to use; smooth surface without burrs, high-quality materials, sturdy and durable

Wide range of applications: For distributing the load of threaded bolts, screws and nuts, providing a smooth bearing surface. Suitable for garden hoses, faucets, washing machines, shower heads, cylinders, pumps and valves, etc

Material: 304 stainless steel

🚗Package Included: The 200 pcs cup countersunk washer kit includes 70pcs #6 washers, 50pcs #8 washers, 40pcs #10 washers, 40pcs #12 washers.

🚌How it Work: Our finishing cup washer kit can prevent nuts, bolts or screws from pulling out of the material, finish washers are designed to accommodate the heads of countersunk screws to provide a finished look.

🚕Storage Case: Comes with storage boxes, each size is neatly placed in a separate compartment, easy to store and won't mix up. This transparent plastic box can be used as a storage box for your convenience use and storage.

Model Number: M3 M4 M5 M6

Screw Cup Washers. Wide range of applications.

Stainless Steel Finishing Cup Countersunk Washers Assortment Kit

Multiple Holes: 32mm robot hole pattern gasket with 4pcs M4 threaded holes and 4pcs 4mm diameter through holes.

Countersunk Hole: The countersunk hole is designed to avoid the protrusion interference of the screw head and ensure the flatness of the installation plane.

With Notch: There is a notch with a diameter of 35mm and a depth of 2.5mm at the bottom of the center hole, which can be used as a bearing housing for flanged ball bearings.

【✔】High Quality 304 Stainless Steel Finishing Cup Washer Assortment Kit

【✔】Made of 304 Stainless Steel Material, Very Good Corrosion Resistance, It Can Be Used in a Humid Environment

【✔】Set Includes 7 Most Used Sizes: #4 #6 #8 #10 #12 #14 #16【Please See Picture 2 for Specific Dimensional Size】

Material:Made of high quality 304 Stainless Steel,corrosion resistant, sturdy and durable.

Shiny stainless washer that allows the screw to recess into the center giving a clean, decorative presentation.

Finish washers are designed to accommodate the heads of a countersunk screw in order to provide a finished appearance.