ZCC.CT RT16.01N-G55 YBG201 Carbide Insert – 55° BSP Internal Thread 1.75-3.0mm
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RT16.01N-G55 YBG201 Threading Insert
High-Precision 55° Full Profile Internal Threading for BSW and BSPP Applications
Product Overview
"How can I achieve a perfect 55° internal thread form with exact crest truncation in tough stainless steel or alloy pipe fittings?"
The ZCC.CT RT16.01N-G55 YBG201 is a premium internal threading insert designed with a 55° Full Profile (G55). This full-form geometry ensures that the entire thread—including the crest and root—is machined to exact specifications, making it the superior choice for high-pressure sealing standards like BSPP and BSW.
Utilizing the YBG201 PVD Grade, this insert offers an exceptional blend of wear resistance and substrate toughness. It is specifically optimized for internal boring operations where heat dissipation is limited, delivering consistent performance in Steels (P) and Stainless Steels (M).
Key Features
- Full Profile Advantage: Guarantees a correct thread form by machining the crest and root simultaneously, eliminating extra finishing steps.
- YBG201 Versatile Coating: Multi-layer PVD nc-TiAlN coating provides a hard, smooth surface that reduces friction and prevents edge chipping.
- Internal Geometry Focus: Specifically ground to ensure rigid cutting and efficient chip evacuation within the bore of the workpiece.
- High Dimensional Repeatability: Precision grinding of the 55° profile ensures every part meets stringent Whitworth standard gauges.
Technical Specifications
| Parameter | Specification |
|---|---|
| Thread Standard | 55° Whitworth (Internal) |
| Profile Type | Full Profile (G55) |
| Insert Size (I.C.) | 16 (9.525 mm) |
| Grade / Coating | YBG201 / PVD Coated |
| Application Range | Steel, Stainless, Cast Iron |
Pairs with standard ISO internal threading boring bars. Best used with SNR 0016 R16, SNR 0020 R16, or SNR 0025 S16.
Shop SNR Internal Threading Boring Bars →
Typical Applications
- Precision internal BSPP gas threads for hydraulic valves.
- Standard BSW internal fasteners for industrial machinery.
- Critical pipe couplings in chemical and water treatment.
- Ideal for high-volume CNC production in stainless 316.
Performance Edge
The Full Profile G55 is essential for applications where the thread must be airtight or liquid-tight. Because it machines the tooth crest, it ensures that the thread's major and minor diameters are perfectly balanced, reducing the risk of cross-threading or leaks.
Verified User Performance
"Excellent finish on internal BSPP threads. The full profile makes gauging much easier and more consistent."
— Arthur P., UK"Consistent tool life even in 316 stainless. The YBG201 grade is definitely our shop's first choice for internal work."
— Marco S., Italy
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.