A special taps manufacturer designs and grinds taps to a non-standard thread form, size, material or tolerance that catalog stock can’t deliver. To choose the right one, confirm they build to your drawing or sample, control quality in-house, and can ship fast when production is waiting. This guide covers what to specify, which tap styles fit which jobs, and what to ask before you place an order.
What Does a Special Taps Manufacturer Actually Do?
A special taps manufacturer takes a thread requirement that no catalog tap satisfies and engineers a tool to meet it. That means working from your print or a sample part to define thread form, pitch, length, flute style and substrate, then grinding the tap to suit.
The key distinction is manufacturer versus reseller. A catalog reseller can only offer what’s already on the shelf. A manufacturer controls quality end to end, from material selection through grinding and inspection, and can modify a standard design or build something entirely new. Taylor Tool, a Canadian tap manufacturer established in 1918, designs and produces custom taps to your exact thread form, material and tolerance, from one-off prototypes to repeat production runs.
If you need a tap that doesn’t exist in a catalog, start with our overview of special thread taps.
When Do You Need a Special Tap Instead of a Standard One?
You need a special tap when no catalog tap matches your thread form, pitch, length or workpiece material. If you’re forcing a standard tap to do a job it wasn’t designed for, tool life and thread quality usually suffer.
Common triggers include:
- Unusual pitch that falls outside standard series
- Oversized or large-diameter threads beyond typical catalog ranges
- Left-hand threads for reverse-thread applications
- Multi-lead forms where standard single-lead taps won’t work
- Extended length requirements for deep or recessed features
There are two routes. A modified standard adapts an existing design, for example a different length or relief. A completely unique tool is built from scratch to your drawing. Either way, an engineering team that works directly with you shortens the path from print to tap. For deeper coverage of non-catalog tooling, see special purpose taps.
Special Thread Forms a Specialty Tap Maker Should Cover
A capable specialty tap manufacturer should cover Acme, trapezoidal, buttress, Whitworth, BSPT, BSPP and PG threads, plus unusual pitches and left-hand or multi-lead variants. Taylor Tool manufactures taps for these forms, the ones general suppliers often don’t stock.
| Thread form | Typical context | Notes |
|---|---|---|
| Acme / trapezoidal | Power and motion transmission screws | Ask about pitch and lead |
| Buttress | Loads in one direction | Directional load profile |
| Whitworth | British standard threads | Common on legacy and imported equipment |
| BSPT | Tapered pipe threads | Sealing threads |
| BSPP | Parallel pipe threads | Typically sealed with a washer or O-ring |
| PG (Panzergewinde) | Electrical conduit fittings | See the PG taps PDF |
| Left-hand / multi-lead | Reverse or fast-advance threading | Specify hand and number of starts |
For load-directional forms, see special buttress taps. For non-standard pitches within metric series, see special metric taps.
Tap Types and Materials: Choosing the Right Style
Match the flute style and substrate to your hole type and workpiece material. Hole geometry decides the flute; the material you’re cutting decides the substrate.
| Tap type | Best for | How it works |
|---|---|---|
| Spiral point | Through holes | Pushes chips forward, ahead of the tap |
| Spiral flute | Blind holes, stainless | Pulls chips up and out of the hole for better chip evacuation |
| Form (thread-forming) | Ductile materials | Displaces material to form stronger threads with no chips |
Spiral point vs spiral flute: the difference is chip direction. Spiral point taps push chips forward, so they need a through hole with somewhere for chips to go. Spiral flute taps pull chips back up the flute, which is why they suit blind holes and stainless.
Form taps (also called thread forming taps) cold-form the thread instead of cutting it, producing stronger threads in ductile materials with no chips to manage. See special form taps.
Substrate: HSS is the general-purpose choice. Solid carbide and carbide-tipped taps are for hardened steels and high-silicon aluminum, where an HSS edge won’t last. Powdered metal taps use an exceptionally uniform, tough substrate for heavy machining. Browse the full range on our taps page.
High Performance and Carbide Taps for Demanding Production
Choose carbide or high performance geometries when HSS wears out too quickly and cost per hole drives your decisions. In high-volume work, the purchase price of the tap matters less than how many good holes it cuts.
Taylor Tool’s high performance taps use advanced geometries and premium materials to deliver higher speeds, longer tool life and reduced cost per hole. Carbide taps add wear resistance and rigidity for hardened steels and abrasive materials, with each tap ground to tight tolerances for repeatable thread quality.
These tools see the most use in automotive and aerospace production, where consistency across thousands of parts counts. Explore high performance custom taps and high performance spiral taps.
Questions to Ask Before You Choose a Special Taps Manufacturer
Verify four things: design capability, process control, delivery speed and engineering support. A good answer to each tells you whether the shop can handle your job.
- Do they work from a drawing or a sample? You shouldn’t need a finished print to get started.
- Do they have engineering support? Look for a team that works directly with you on modified standards or unique tools.
- Can they hold your tolerance? Ask about tolerance capability for your specification rather than assuming it.
- How fast can they ship? Ask about delivery speed for both prototypes and repeat runs.
- Do they serve your industry? Taylor Tool supplies automotive, aerospace, power generation and general manufacturing, from the smallest job shops to the largest industrial manufacturers.
For production-critical needs, ask about the 24 HR Jet Tap service, built for situations where downtime is costing you.
How Ordering Works in Canada and the U.S.
In Canada, orders go through an established network of distribution partners; contact the sales team and they’ll direct you to your nearest distributor for pricing and availability. Taylor Tool is currently expanding its U.S. sales representation, so reach out directly for U.S. ordering information and distributor availability in your region.
To get an accurate quote, have this ready:
- Your drawing or a sample part
- Workpiece material
- Thread form, size and pitch (and hand, if left-hand)
- Hole type: blind or through
- Quantity: prototype, one-off or repeat production
Contact the sales team at 1-800-265-2145 (Canada) or 1-855-221-8277 (USA), or use the contact page to send a message or request a quote.
Frequently Asked Questions
What is a special tap?
A special tap is a tap made to a non-standard thread form, size, length, material or tolerance that catalog stock doesn’t cover. It can be a modified standard or a completely unique tool built to your drawing or sample.
How do I find a reliable special taps manufacturer?
Look for a manufacturer, not a reseller, that works from your drawing or sample, offers engineering support, and delivers on time. Ask about tolerance capability for your specification, industries served, and whether expedited service is available.
Can a manufacturer make a custom tap from a drawing or sample?
Yes. Taylor Tool’s engineering team works from your drawing or sample to deliver a tap suited to your application, whether you need a modified standard or a completely unique tool.
What thread forms require special taps?
Forms general suppliers rarely stock: Acme, trapezoidal, buttress, Whitworth, BSPT, BSPP and PG, plus unusual pitches, oversized threads, left-hand threads and multi-lead forms.
When should I choose carbide taps over HSS taps?
Choose carbide when HSS can’t hold an edge, such as in hardened steels, high-silicon aluminum and other abrasive materials, especially in high-volume work where tool life and cost per hole matter most.
What is the difference between spiral point and spiral flute taps?
Spiral point taps push chips forward and suit through holes. Spiral flute taps pull chips up and out, making them the better choice for blind holes and stainless.
What are form taps and when are they used?
Form taps, or thread forming taps, displace material to create threads instead of cutting them. They produce stronger threads with no chips and are used in ductile materials.
What information do I need to provide to get a quote for a special tap?
Provide a drawing or sample, workpiece material, thread form, size and pitch, hole type (blind or through) and quantity. Contact sales for a quote.
Does Taylor Tool ship to the United States?
Yes. Taylor Tool is actively expanding its U.S. distribution network. Call 1-855-221-8277 for U.S. ordering information, lead times and distributor availability in your region.
How do I order Taylor Tool taps in Canada?
Orders go through Taylor Tool’s network of distribution partners across Canada. Call 1-800-265-2145 or email sales@taylortool.com and the sales team will connect you with your nearest distributor.
Can special taps be made as one-off prototypes?
Yes. Taylor Tool produces custom taps from one-off prototypes to repeat production runs. Ask about your specific quantity and specification.
What is a Taylor Tool 24 HR Jet Tap?
It’s Taylor Tool’s 24-hour jet-tap service, aimed at production-critical needs where waiting isn’t an option. Contact sales for details on availability and the tap sizes covered.
Taylor Tool is located at 4 Goebel Avenue, Cambridge, Ontario N3C 1Z1. For a quote on your custom tap, call 519-658-9378 or email sales@taylortool.com.