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High-performance 55° single-tooth thread mill for G/BSPP/PF parallel threads and RC/BSPT tapered threads. Made from solid carbide, ideal for CNC machining of internal & external, left & right-hand threads. Supports multiple pitches with one tool. Coating options available for steel, stainless steel, aluminum, cast iron, titanium, and heat-resistant alloys.
Product Overview
The G / RC Single-Tooth Thread Mill is a solid carbide CNC threading tool designed for high-precision pipe threads. Its 55° thread angle makes it versatile for both:
G / BSPP / PF parallel threads (straight threads)
RC / BSPT tapered threads (requires pre-machined tapered hole)
Internationally, G threads are also called BSPP, PF, ISO 228, while RC threads are also known as BSPT, PT, ISO 7/1 tapered pipe threads.
The single-tooth universal profile design allows one tool to machine a range of pitches, providing high flexibility, cost efficiency, and reduced tooling inventory.
Key Features
Material: Solid tungsten carbide for maximum durability and rigidity
Thread Standard: Supports G/BSPP/PF (parallel) and RC/BSPT/PT (tapered) threads
Universal Pitch Range: One tool can cover multiple thread pitches
Threading Flexibility: Can machine internal & external threads, left-hand & right-hand threads
CNC Optimized: High-speed, high-precision milling for professional CNC centers
Cost-Effective: Versatile single-tooth design reduces the need for multiple tools
Material & Coating Recommendations
| Workpiece Material | Recommended Coating | Benefits |
|---|---|---|
| Copper / Aluminum | DLC / TiB₂/ no coating | Prevents built-up edge, smooth chip evacuation |
| 45# Steel / Carbon Steel | TiN / TiCN | Balanced hardness and toughness |
| Stainless Steel | AlTiN / AlCrN | High oxidation resistance, long tool life |
| P20 Tool Steel | TiCN / AlTiN | Enhanced wear resistance |
| Cast Iron | TiN / TiCN | Improves edge stability, reduces chipping |
| Titanium Alloys | AlTiN / AlCrN | Handles high cutting temperatures |
| Heat-Resistant Alloys | AlCrN / AlTiSiN | Maximum heat resistance, extended service life |
Tip: Choosing the right coating is crucial for tool life and machining efficiency.
Machining Tips
For G / BSPP / PF parallel threads (straight): Drill a straight hole to the correct minor diameter before thread milling.
For RC / BSPT tapered threads: Pre-machine the hole to match the taper of the thread. The single-tooth thread mill then cuts the thread accurately.
💡 Use a stable CNC program with correct interpolation settings to achieve best accuracy and surface finish.
Single-Tooth vs Full-Form Thread Mills
| Feature | Single-Tooth Thread Mill | Full-Form Thread Mill |
|---|---|---|
| Pitch Range | One tool can cut multiple pitches | Fixed pitch size only |
| Cost Efficiency | Lower cost, fewer tools needed | Higher cost, requires multiple tools |
| Cycle Time | Longer (threads cut tooth by tooth) | Faster (multiple teeth cut simultaneously) |
| Flexibility | Highly versatile, ideal for small batches | Best for mass production of one pitch |
| Tool Inventory | Minimal | Larger inventory required |
| Thread Quality | Excellent if programmed well | Very consistent for high-volume production |
Applications
Aerospace & Aviation: Hydraulic and fuel line fittings requiring high-precision threads.
Automotive: Engine components, transmission parts, and brake systems.
Oil & Gas: Tapered and parallel pipe connections for valves, pipelines, and joints.
Hydraulics & Pneumatics: Cylinders, pumps, and connectors with internal/external threads.
General Engineering & Machinery: Custom machinery, molds, and equipment assemblies needing accurate threaded connections.
Technical Specifications (Customizable)
| Applicable thread/A55° | P | d1/mm | L1/mm | D/mm | L/mm | F |
|---|---|---|---|---|---|---|
| G/RC 1/16-28 & 1/8-28 | 0.5-1.0 | 4 | 12 | 4 | 50 | 4 |
| G/RC 1/8-28 | 0.5-1.25 | 4.6 | 16 | 6 | 50 | 4 |
| G/RC 1/8-28 | 0.5-1.25 | 4.8 | 16 | 6 | 50 | 4 |
| G/RC 1/8-28 | 0.5-1.25 | 5 | 16 | 6 | 50 | 4 |
| G/RC 1/8-28 | 0.5-1.25 | 6 | 16 | 6 | 50 | 4 |
| G/RC 1/4-19 & 3/8-19 | 1.0-2.0 | 8 | 25 | 8 | 60 | 4 |
| G/RC 1/4-19 & 3/8-19 | 1.0-2.0 | 8 | 30 | 8 | 75 | 4 |
| G/RC 1/4-19 & 3/8-19 | 1.0-2.0 | 8 | 30 | 8 | 100 | 4 |
| G/RC 1/2-14 & 3/4-14 | 1.0-2.5 | 10 | 30 | 10 | 75 | 5 |
| G/RC 1-11 & 2-11 | 2.0-2.5 | 12 | 35 | 12 | 75 | 5 |
| G/RC 1-11 & 2-11 | 2.0-3.0 | 15.95 | 45 | 16 | 100 | 6 |
| G/RC 1/8-28 (R corner) | 0.5-1.25 | 5.95 | 15 | 6 | 50 | 4 |
| G/RC 1/4-19 & 3/8-19 (R corner) | 1.0-2.0 | 7.95 | 25 | 8 | 60 | 4 |
| G/RC 1/2-14 & 3/4-14 (R corner) | 1.0-2.5 | 9.95 | 30 | 10 | 75 | 4 |
| G/RC 1-11 & 2-11 (R corner) | 2.0-2.5 | 11.95 | 35 | 12 | 75 | 4 |
Frequently Asked Questions (FAQ)
Q1: Should I choose a single-tooth or full-form thread mill?
Single-tooth thread mill: Flexible, can cover multiple pitches. Ideal for small-batch production or universal use.
Full-form thread mill: Faster for high-volume production, very consistent thread quality.
Q2: Do I need to pre-drill the hole before using a single-tooth thread mill?
G / BSPP / PF threads: Drill a straight hole of correct minor diameter.
RC / BSPT / PT threads: Pre-machine a tapered hole to match the thread profile before milling.
Q3: Can I use the same tool for left-hand and right-hand threads?
Yes. The single-tooth thread mill supports both directions.
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