COUNTERBORING SERVICES

Our precision counterboring services are designed to create flat-bottomed holes that allow fasteners like bolts, screws, or sockets to sit flush with or below the surface of a part. Whether you're working on machined components, assemblies, or custom fabrications, we provide clean, accurate counterbores to your exact specifications.

Using advanced CNC machinery, we perform counterboring across a wide range of materials, including mild steel, stainless steel, aluminium, and plastics. From small, intricate parts to larger industrial pieces, we deliver consistent depth, alignment, and diameter — ensuring proper fit and finish in critical applications.

Applications of Counterboring Services.

  • Precision Machined Parts

    Precision Machined Parts

    Counterboring is commonly used in machined components that require flush or recessed fasteners. Whether it’s housings, covers, or mounting plates, a precise counterbore ensures the screw head doesn’t protrude, preventing interference with moving parts or adjacent surfaces.

  • Structural Steel Connections

    Structural Steel Connections

    In steel fabrication and construction, counterbores are used to recess bolt heads in beams, brackets, and base plates. This allows for flat surface mounting, better load distribution, and a cleaner, more secure fit when bolting to other structures or equipment.

  • Automotive & Motorsport Components

    Automotive & Motorsport Components

    High-performance parts often require tightly secured fasteners in limited space. Counterboring allows for recessed bolts or screws in control arms, mounting plates, and chassis elements — improving both safety and aerodynamics while maintaining structural integrity.

  • Scientific & Medical Equipment

    Scientific & Medical Equipment

    Precision instruments and medical assemblies often demand flawless alignment and smooth finishes. Counterboring helps integrate fasteners seamlessly into enclosures, frames, or precision mounts without disrupting critical tolerances or aesthetics.

“We needed a series of parts counterbored for a tight assembly and the accuracy was spot on. The depth and finish were exactly what we needed, and the turnaround was quicker than expected. Great service from a reliable team — we’ll definitely be back.”

— Sophie H., Senior Engineer.

 FAQs

  • Counterboring is the process of enlarging the top part of a drilled hole to create a flat-bottomed recess, allowing fasteners to sit flush or below the surface.

  • We machine a variety of materials including steel, stainless steel, aluminium, brass, and engineering plastics.

  • We handle everything from small precision components to larger fabricated parts used in assemblies, machinery, and structural applications.

  • Our CNC machines ensure tight tolerances for diameter and depth, with clean finishes and consistent positioning across batches.

  • Yes — we can create counterbores to your exact specs, including diameter, depth, and chamfering if needed.

  • Absolutely. We often combine counterboring with drilling, tapping, milling, and other CNC services for complete part production.

  • We work from DXF, DWG, and PDF files, and can also help translate hand-drawn sketches into machinable formats.

  • We welcome both single-part jobs and large production batches, with pricing tailored to your needs.

  • Our counterboring services are used across manufacturing, construction, automotive, aerospace, and custom fabrication.

  • Typical turnaround is 2–4 working days, depending on quantity, complexity, and material availability.

CONTACT US

sales@actuationvalve.com
0151 547 1221

Need perfectly aligned, flat-bottomed holes for your assembly? Our counterboring services deliver precision and reliability at every depth.

Send us your part drawings or requirements using the form — we’ll get back to you quickly with a quote or next steps.