Special Length Taps: Custom Extended Reach Tapping Solutions

Setup dimensions on today’s complex CNC machine tools frequently necessitate taps reaching farther from the spindle than standard-length taps can achieve. Whether you are machining deep cavities in mold-making or reaching past interfering fixtures, standard tooling often falls short. As a result, Regal Cutting Tools offers extended sizes that reach up to 12″ directly from our standard catalog. For requirements beyond that, our custom manufacturing capabilities ensure you get the exact special length tap you need to keep your production running smoothly.

Best for: Manufacturers and machinists who require custom taps with an extra-long reach for deep hole tapping or obstructed part features.

Lead Time: Ships in 10 working days.

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Industries & Applications

Extended reach taps are critical for industries that machine large, complex, or deeply recessed components, including:

Aerospace

Deep cavity structural components and landing gear.

Automotive & Heavy Equipment

Engine blocks, transmissions, and deep-flanged parts.

Oil & Gas

Valves, deep-hole flanges, and pipe fittings.

Mold & Die

Tooling blocks requiring deep threaded coolant lines or assembly holes.

Technical Capabilities for Custom Long-Reach Taps

Our capacity to provide special lengths depends on the specific diameter, thread pitch, and thread length your application requires. We engineer and manufacture special length taps tailored to your precise machining environment.

Maximum Length

In larger sizes, we manufacture custom taps up to 12 inches (1 foot) long, with more than half of the overall length threaded.

Base Materials

Available in Premium High-Speed Steel (HSS), Cobalt (HSSE), Powdered Metal (HSSPM) and solid Carbide to suit varying workpiece materials and tool life requirements.

Flute Geometries

Spiral Point: For through-hole applications to push chips forward.
Spiral Flute: For blind-hole applications to extract chips out of deep cavities.
Straight Flute: For general purpose tapping in short chipping materials.

Surface Treatments & Coatings

Custom coatings including TiN, TiCN, TiAlN, and bright finishes are available to increase lubricity, heat resistance, and tool life.

Coolant-Through Options

Highly recommended for deep-hole extended reach applications to assist in chip evacuation and temperature control at the cutting edge.

Frequently Asked Questions

Standard extension taps feature a standard thread length with an elongated shank. Special length taps can be fully customized, meaning both the shank length and the actual threaded portion can be extended based on your specific depth requirements.

For larger diameters, Regal Cutting Tools can manufacture custom taps up to 24 inches (2 feet) in overall length. For smaller diameters, maximum length is dependent on the tool’s structural integrity to prevent deflection or breakage.

Yes we can manufacture tap blanks with smaller necks behind the thread to accommodate deep threaded holes.

Our standard turnaround time for custom special length taps is 10 working days. We pride ourselves on rapid manufacturing to minimize your machine downtime.

Yes. Because these are custom-manufactured tools, we can cut standard UNC/UNF, Metric, Pipe threads (NPT/NPTF), or entirely special pitch diameters and thread limits to meet your blueprint specifications.

Simply tell us your reach requirements, thread size, material being machined, and any special shank dimensions. Click GET A QUOTE to submit your specifications, or call our engineering team directly at 800-435-2948.