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
Need Help With ZCC.CT Inserts?
Looking for a ZCC.CT equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This ZCC.CT insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.