Countersinking and Drilling Services
Precision countersink holes drilled into laser cut and fabricated metal parts so fasteners sit flush with the surface. In-house at our Kentucky facility, applied as part of a complete fabrication package or as a standalone service.
Countersinking and Drilling for Metal Fabricated Parts
Countersinking creates a conical hole profile that allows hardware to sit flush when joining parts together. It is one of the most common secondary operations applied to laser cut sheet metal parts, and when done correctly it improves both the appearance and the functional longevity of the finished assembly.
At Metal Workz LLC, we add countersinking to laser cut and fabricated parts as part of a complete in-house workflow. Parts can be laser cut, bent, countersunk, deburred, and powder coated without leaving our Albany, Kentucky facility. We also accept customer-supplied parts for countersinking as a standalone service.
Benefits of Countersinking Your Parts
Flush Appearance
Flat-head fasteners seat completely into the material, leaving a clean, flush surface. No protruding bolt heads to snag clothing, catch on adjacent parts, or create an unfinished look.
Improved Longevity
A fastener that sits flush is less exposed to vibration, corrosion, and mechanical stress at the joint. Countersunk joints stay tighter longer than surface-mounted alternatives.
Better Paint and Coating Adhesion
Flush fasteners eliminate a common point of coating failure. When bolt heads protrude, powder coating and paint thin around the edges and chip. Countersunk joints coat evenly.
Cleaner Assembly
Parts with countersunk holes assemble faster and more accurately. Fasteners locate themselves in the recess during assembly, reducing misalignment and installation time.
Professional Finish
Countersinking is the mark of a finished, professionally fabricated part. It signals quality to end users and customers who receive or handle the finished assembly.
Hardware That Uses Countersunk Holes
Countersinking is used wherever a fastener head needs to sit at or below the material surface. Common hardware types that require countersunk holes include:
Flat-Head Screws
Machine screws and wood screws with a tapered head profile designed to seat flush in a countersunk hole.
Flat-Head Bolts
Structural bolts with a conical underhead that requires a matching countersink in the mating plate or bracket.
Rivets
Countersunk rivets sit flush with the sheet surface, commonly used in aerospace, automotive, and structural panel applications.
Countersunk Washers
Used in combination with standard fasteners to distribute load over a countersunk recess in thinner materials.
PEM Fasteners
Self-clinching PEM hardware often requires a countersunk pilot hole for correct installation and flush seating in sheet metal.
Custom Hardware
Any fastener with a tapered or conical head profile. Contact us with your hardware spec to confirm the correct countersink angle and diameter.
Countersinking Service Specifications
| Specification | Detail |
|---|---|
| Process | Countersinking (conical recess), through-hole drilling |
| Common countersink angles | 82° and 90° (most common); other angles available on request |
| Materials | Mild steel, carbon steel, stainless steel (304, 316), aluminum (6061, 5052) |
| Part types | Laser cut sheet metal, plate, fabricated assemblies, customer-supplied parts |
| Customer-supplied parts | Accepted for countersinking-only orders |
| File formats accepted | DXF, DWG, STEP, IGES, PDF drawings with hole call-outs |
| Combined services | Laser cutting, bending, welding, deburring, powder coating |
| Production volume | Single pieces through production run quantities |
| Location | Albany, Kentucky, shipping nationwide |
| Quote turnaround | Typically 1-2 business days |
Metals We Countersink
Our Countersinking Process
Submit Files and Quote
Send your drawing with hole call-outs specifying countersink angle, diameter, and quantity per part. We review and respond within 1-2 business days.
Laser Cut and Drill
We laser cut your blanks in-house if required, then drill through-holes and apply countersinks to the specified angle and diameter at each location.
Inspect and Verify
Each part is checked to confirm countersink depth, angle, and position match your drawing before proceeding to any downstream operations.
Finish and Ship
Deburring, bending, welding, and powder coating are available in-house before your finished parts ship directly to you anywhere in the US.
Need countersinking added to a larger fabrication order? Most customers combine countersinking with laser cutting, bending, and powder coating as part of a complete part package. One order, one shipment, finished parts ready to assemble. Contact us to get started ›
Combine Countersinking With Our Other Services
Countersinking is most valuable as part of a complete fabrication workflow. We handle every step in-house:
Frequently Asked Questions
Get a Countersinking Quote
Send us your drawing and project details for a fast, competitive quote. We respond within 1-2 business days.
368 KY-90 East, Albany, KY 42602