Extension Taps

WESTport manufactures Special Extension Taps in both left-hand and right-hand configurations for threading applications that require greater reach than standard taps can provide. Designed with an extended shank and overall length, these taps allow machinists to produce accurate internal threads in deep recesses, counterbored components, restricted work areas, and other difficult-to-access locations. When standard-length tooling cannot reach the workpiece safely or efficiently, WESTport's custom Extension Taps provide a dependable, precision-engineered solution.

Every WESTport Special Extension Tap is manufactured to customer specifications using premium High-Speed Steel (HSS), cobalt, powdered metal, or carbide materials selected to match the workpiece material and machining environment. Each tool is precision ground to ensure accurate thread geometry, smooth cutting performance, and consistent dimensional repeatability. Whether your application requires Unified, Metric, ACME, Pipe Thread, or another specialty thread form, WESTport can manufacture Extension Taps from customer drawings, blueprints, or sample parts.

The extended shank design improves accessibility without sacrificing cutting accuracy or tool strength. WESTport can customize overall length, shank diameter, thread length, chamfer style, square dimensions, coatings, and other critical features to optimize performance for your specific machining process. This flexibility makes our Extension Taps ideal for both prototype work and high-volume production where specialized tooling is often required.

Special Extension Taps are widely used throughout aerospace, automotive, hydraulic, defense, energy, medical device manufacturing, mold making, and heavy industrial equipment production. They are particularly valuable when threading deep cavities, recessed bores, complex castings, manifolds, valve bodies, and large fabricated components where conventional taps cannot provide adequate reach.

Since 1989, WESTport has supplied precision thread tooling, thread gages, hardness testing equipment, calibration services, and metrology solutions to manufacturers throughout North America and around the world. Our experienced engineering team works directly with customers to develop custom tooling that improves machining efficiency, increases productivity, and consistently delivers high-quality threads.

Benefits

• Threads deep or hard-to-reach holes with confidence
• Eliminates the need for costly secondary operations
• Produces accurate, repeatable internal threads
• Improves operator accessibility
• Reduces setup challenges
• Extends tool life through premium materials and coatings
• Custom engineered for your exact application
• Supports efficient production machining

Typical Applications

• Deep-hole threading
• Recessed bores
• Hydraulic manifolds
• Valve bodies
• Aerospace components
• Automotive parts
• Mold and die manufacturing
• Heavy industrial equipment
• Energy industry components
• OEM production machining

Technical Information

WESTport Special Extension Taps feature an extended overall length and shank to provide access where standard taps cannot reach. Available in left- and right-hand designs, these taps can be manufactured in Unified, Metric, ACME, Pipe Thread, and other specialty thread forms. WESTport customizes thread dimensions, overall length, chamfer style, shank configuration, coatings, and other design features to match each customer's specific application and machining requirements.

Why Choose WESTport?

Since 1989, WESTport has been a trusted supplier of precision thread gages, custom taps, hardness testing equipment, metrology products, and ISO/IEC 17025 calibration services. Our engineering expertise, precision manufacturing capabilities, and commitment to customer satisfaction allow us to provide custom thread-cutting solutions that improve productivity and consistently deliver exceptional results. Whether you require one prototype or a large production order, WESTport delivers the quality and technical support manufacturers rely on worldwide.