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Threading Tools

Complete threading program including taps, solid carbide thread mills and indexable inserts for UN, metric, NPT and BSPP threads.

Threading Tools series

Explore by series

Five threading tool series, each with its own application guide, tool-selection notes and RFQ checklist. Choose the series that matches your part to see configurations, materials and custom options.

01Solid Carbide Tools for Production Threading

Carbide Taps

Solid carbide taps for repeatable internal-thread production in stable machining conditions — engineered around the thread specification, workpiece material, hole preparation, machine, and production target.

9 productsView series 02Tough, Versatile HSS Threading Tools

High-Speed Steel Taps

High-speed steel taps for general machining, fabrication, repair, and production — a tough, serviceable option for standard threads and application-specific geometries.

21 productsView series 03CNC Tools for Internal and External Threads

Thread Milling Cutters

Thread milling cutters for CNC production of internal and external threads — configured around the thread specification, prepared feature, workpiece material, interpolation path, machine, and holder.

23 productsView series 04Drawing-Based Cutters for Orthopedic Component Threads

Orthopedic Thread Milling Cutters

Specialized thread milling cutters for precision thread features in orthopedic-component manufacturing — engineered from the approved component drawing, material specification, machine, and validated production process.

8 productsView series 05Gauges and Inspection Tools for Thread Verification

Thread Measurement Tools

Thread measurement tools for checking internal and external thread features — specified around the thread standard, designation, tolerance class, acceptance method, and quality-system requirements.

Made to your drawingView series

Not sure which series fits? Send your drawing and our engineers will recommend the tool.

11 Products

Carbide Drill Bits

Solid carbide drills with internal coolant for steel, stainless steel, cast iron and high-temperature alloys.

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23 Products

Carbide Milling Cutters

Carbide square and ball end mills for your production requirements.

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9 Products

Carbide Taps

Ultra-fine grain tungsten carbide taps for a wide range of thread standards.

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4 Products

Carbon Fiber Milling Cutters

Ultra-fine grain tungsten carbide end mills for carbon fibre (CFRP) machining.

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5 Products

Custom Drill Bits

Step drills and special-profile drills made to your drawings or samples.

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4 Products

Custom Milling Cutters

Special-profile milling cutters made to your drawings or samples.

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12 Products

Danfoss Cavity Tools

Roughing and finishing cavity tools for Danfoss-compatible cartridge valve cavities.

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3 Products

Deep-Hole Drill Bits

Carbide drills for deep holes with stable chip evacuation and straightness.

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11 Products

Gear Shaper Cutters

Grade A pinion-type and disc-type gear shaper cutters in M35 cobalt HSS with TiAlN coating, for finishing and pre-shaving internal and external gears, per GB/T 6081 and DIN 3968.

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12 Products

High-Precision Reamers

Carbide, cermet and welded reamers for high-precision and deep-hole bores.

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1 Products

HSS Milling Cutters

High-speed steel milling cutters for general and interrupted machining.

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21 Products

HSS Taps

HSS and HSS-E spiral flute, straight flute and forming taps.

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4 Products

HydraForce Cavity Tools

Roughing and finishing cavity tools for HydraForce-compatible cartridge valve cavities.

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8 Products

ISO 1179 Port Tools (BSPP)

Port forming cutters for ISO 1179 BSPP (G thread) ports.

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4 Products

ISO 6149 Port Tools (Metric)

Port contour cutters for ISO 6149 metric thread ports.

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8 Products

Orthopedic Thread Milling Cutters

Thread mills for titanium alloy and stainless steel orthopedic locking plates.

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6 Products

Parker Cavity Tools

Roughing and finishing cavity tools for Parker-compatible cartridge valve cavities.

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2 Products

Plastic Cutting Tools

Carbide and HSSE end mills for engineering plastics, acrylics and composites.

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5 Products

SAE J1926 Port Tools (UNF)

Port contour cutters for SAE J1926 straight thread O-ring ports.

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16 Products

Sun Hydraulics Cavity Tools

Roughing and finishing cavity tools for Sun Hydraulics-compatible cartridge valve cavities.

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3 Products

T-Slot Milling Cutters

T-slot and undercut cutters for slots, grooves and keyways.

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23 Products

Thread Milling Cutters

Tungsten carbide thread mills for a wide range of thread standards.

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11 Products

Ultrasonic Blades

Ultrasonic cutting blades for honeycomb cores, prepregs and soft composites. Made to order to your drawings.

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38 Products

Cavity Tools

Complete range of cavity form tools compatible with Sun Hydraulics, HydraForce, Parker and Bosch Rexroth cartridge valve standards.

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17 Products

Composite Material Machining

PCD tipped and diamond coated tools designed for clean, delamination-free machining of carbon fiber, GFRP and other composite stacks.

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11 Products

Gear Tools

Precision gear cutting tools including hobs, shaper cutters and form milling cutters for spur, helical and spline applications.

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31 Products

Hole Making Tools

Solid carbide drills, indexable drills, reamers and boring bars engineered for tight tolerance hole production in hydraulic manifolds and valve bodies.

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31 Products

Milling Cutters

High performance milling cutters with TiAlN and AlTiN coatings for steel, stainless and superalloy machining.

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17 Products

Port Tools

Single-pass port tools producing complete port form, chamfer and thread relief in one operation. Available in all major hydraulic standards.

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61 Products

Threading Tools

Complete threading program including taps, solid carbide thread mills and indexable inserts for UN, metric, NPT and BSPP threads.

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No products listed in this category yet

We are still adding this range to our online catalog. These tools are available made to order: send your drawing or sample and we will quote sizes, lead time and price, or contact our team for current availability.

Made to Order

Manufactured to your drawing

Tools in this category are produced on request to your drawing, sample or specification. Send us your requirements and our engineers will reply within 24 hours.

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TM535 thread milling cutter series card

TM535 General-Purpose Precision Thread Milling Cutter

60° Metric Thread. The TM535 series consists of professional-grade thread mills specifically designed for machining 60° UNJ aerospace precision threads in accordance with the ANSI B1.1:74 standard. Standard sizes and custom tools made to your drawings.
TM537 thread milling cutter series card

TM537 Whitworth BSF Thread Milling Cutter

British standard fine thread. The TM537 series comprises professional-grade thread milling cutters specifically engineered for the precision machining of 55° BSF (British Standard Fine) threads in accordance with the B.S. Standard sizes and custom tools made to your drawings.
TM539 thread milling cutter series card

TM539 Whitworth BSW Thread Milling Cutter

British Standard Coarse Thread. The TM539 series comprises professional-grade thread milling cutters engineered for the precision machining of 55° British Standard Whitworth (BSW) coarse threads. Standard sizes and custom tools made to your drawings.
TM550 thread milling cutter series card

TM550 British Standard Pipe Thread Milling Cutter

Pipe joint threads. The TM550 series consists of professional-grade thread milling cutters specifically engineered for the precision machining of 55° British Standard Pipe (BSP/G) threads. Standard sizes and custom tools made to your drawings.
TM551 thread milling cutter series card

TM551 British Standard Pipe Thread Milling Cutter

Pipe joint threads. The TM551 series consists of professional-grade thread milling cutters precision-engineered for 55° British Standard Pipe Parallel (BSPP) threads (compliant with B.S.2779:1956). Standard sizes and custom tools made to your drawings.
TM554 thread milling cutter series card

TM554 American Standard Tapered Pipe Thread Milling Cutter

Taper pipe thread. The TM559 series consists of professional-grade thread milling cutters specifically engineered for the precision machining of 60° American Standard Taper Pipe Threads (NPT) in accordance with the USAS B2.1:1968 standard. Standard sizes and custom tools made to your drawings.
TM556 thread milling cutter series card

TM556 British Standard Tapered Pipe Thread Milling Cutter

Sealed pipe joint threads. The TM556 series comprises professional-grade thread milling cutters specifically engineered for the precision machining of 55° British Standard Taper Pipe Threads (BSPT) in accordance with B.S.21:1985. Standard sizes and custom tools made to your drawings.
TM558 thread milling cutter series card

TM558 British Standard Tapered Pipe Thread Milling Cutter

Sealed pipe joint threads. The TM556 series comprises professional-grade thread milling cutters specifically engineered for the precision machining of 55° British Standard Taper Pipe Threads (BSPT) in accordance with B.S.21:1985. Standard sizes and custom tools made to your drawings.
TM559 thread milling cutter series card

TM559 Dry Sealing Tapered Pipe Thread Milling Cutter

NPTF Thread Milling Cutter. The TM559 series is a professional-grade thread end mill designed for precision machining of ANSI B1.20.3-1976 standard 60° dry-seal tapered pipe threads/NPTF threads. Standard sizes and custom tools made to your drawings.
TM565 thread milling cutter series card

TM565 American Standard Dry Seal Pipe Threads

NPSF Thread Milling Cutter. The TM565 series is a professional-grade thread end mill designed for precision machining of B1.20.3 standard 60° American Standard Dry Seal Pipe Threads / NPSF Threads. Standard sizes and custom tools made to your drawings.
TM811 thread milling cutter series card

TM811 German Standard Pg Thread Milling Cutter

Electrical connector threads. The TM811 series is a professional-grade thread end mill specifically designed for precision machining of DIN 40430 standard 80° Pg threads. Standard sizes and custom tools made to your drawings.
TM821 thread milling cutter series card

TM821 British Standard Coarse Pipe Thread Milling Cutter

Sealed pipe joint threads. The TM821 series is a professional-grade fine-bar thread end mill designed for precision machining of DIN 40430 standard 55° imperial pipe threads/BSW threads. Standard sizes and custom tools made to your drawings.
TM851 thread milling cutter series card

TM851 British Standard Coarse Pipe Thread Milling Cutter

Sealed pipe joint threads. The TM851 series is a professional-grade thread end mill designed for precision machining of DIN 40430 standard 55° imperial heavy-duty pipe threads/BSW threads. Standard sizes and custom tools made to your drawings.
FAQ

Threading tools: common questions

Can't find your answer? Send your drawing and application details and our engineers will advise.

Ask an engineer
How do I choose between a straight flute, spiral point, and spiral flute tap for my application?

Tool selection depends primarily on the type of hole you are tapping:

  1. Straight Flute Taps: Ideal for short-chip materials (like cast iron) and suitable for both blind and through holes.
  2. Spiral Point Taps (Plug Taps): Designed for through holes. They push chips forward ahead of the tool, preventing clogging.
  3. Spiral Flute Taps: Crucial for blind holes. The helical flutes pull chips upward and out of the hole, minimizing the risk of chip packing and tap breakage.
What are the primary causes of tap breakage, and how can I prevent it?

Tap breakage is usually caused by inadequate chip evacuation, improper hole sizing, or misalignment. To optimize process reliability, ensure that:

  1. The pre-drill hole diameter is correct (refer to our Tap Drill Chart).
  2. High-quality tapping fluid or soluble oil is used to maximize lubricity.
  3. For tough materials like stainless steel or titanium, consider upgrading to JIAYI SEIKO's premium chipless forming taps (roll taps) or specialized coated cutting taps to eliminate chip-related failures.
What coatings and tool materials are recommended for high-volume tapping in stainless steel?

For stainless steel (such as 304/316) and other gummy materials, standard HSS taps wear out rapidly. JIAYI SEIKO recommends high-vanadium high-speed steel (HSSE-V3) or powder metallurgy cobalt HSS substrate, paired with TiAlN or CrN coatings. These advanced coatings offer exceptional heat resistance and low friction coefficients, effectively preventing built-up edge (BUE) and significantly extending tool life.

Can JIAYI SEIKO customize taps for non-standard thread profiles, tolerances, or special shank sizes?

Yes. We offer comprehensive OEM/ODM engineering services for non-standard threading applications. Whether you need custom thread profiles (e.g., specific pitch combinations, acme threads, multi-start threads), special tolerance classes (such as oversized/undersized GH limits), or extended shank lengths for hard-to-reach areas, our technical team can design and deliver the exact blueprint you need. Request a Custom Tap Consultation & Quote.