Countersinking

Countersinking is a popular and inexpensive way to improve both the aesthetics and longevity of your assembled sheet metal parts. The process itself involves drilling conical holes that allow your hardware to embed and lay flush with the outside surface.

Applications for Countersinking
Flush Fastener Seating
Machine holes so screws sit flush with the surface for a smooth, finished appearance.
Clean Panel Surfaces
Prepare panels for applications where protruding fasteners would interfere with function or aesthetics.
Assembly Ready Components
Deliver parts that require no additional prep before fastener installation and final assembly.

Why OSH Cut for

Countersinking

Things to note

Since countersinking is a sub-surface feature, the deburring process may or may not reach all the minute edges or blemishes within the hole. If your part is being bent and/or powder coated, know that holes place near bend die lines can become deformed and hardware may fit tighter-than-expected fitting if there's the added layer of paint.

Materials and Hole Specifications

Most competitors only offer countersinking for aluminum, but with OSHCut you can add these features to regular steels, stainless steels, and of course aluminum. Our current tooling provides you with 82-degree holes (Imperial) or 90-degree holes (Metric). Typically, as long as the metal is 18-gauge or thicker, the integrity of the hole / depth stop should remain intact. Our range of hole sizes are quite compatible with the different hardware options offered by popular vendors.

Easy Online Ordering

Our online DFM checker will automatically detect coutersunk features in your part model and program those holes into the production file. This technology is completely unique to OSHCut, giving engineers and organizations a serious leg up when it comes to project efficiency.

OSH CutCustomer Reviews

5 Star Review
“Good prices, great service, and amazing quality.”
Dennis E
5 Star Review
“Pricing was very reasonable and made much more sense than competitors. The quality of our parts was also excellent!”
Anonymous
5 Star Review
“OSH Cut’s design evaluation and forming simulation works is SO useful for ensuring my parts are manufacturable. I also love the sharp price reduction when I order multiple parts.”
Anthony B
Available Materials for Countersinking
Sheet Thicknesses
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Resources & Guidelines
Explore essential resources to help you design smarter, choose the right materials, and get the most out of your metal parts.

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