ZCC.CT RT16.01W-AG55PB YBG205 External Threading Inserts (Partial Profile Whitworth 55°)
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ZCC.CT RT16.01W-AG55PB YBG205 External Threading Inserts (Partial Profile Whitworth 55°)
Nano-TiAlN PVD Coated Laydown Threading Inserts | ISO Size 16ER (ANSI 3/8" IC / 16ER) | PB Precision Chipbreaker | YBG205 Grade for Steel & Stainless Steel
1. Product Overview
Which external threading insert grade and chipbreaker combination guarantees versatile multi-pitch Whitworth 55° thread form accuracy, low cutting forces, and exceptional tool life on stainless steel turning operations?
The ZCC.CT RT16.01W-AG55PB YBG205 Threading Insert is a high-performance external laydown threading solution manufactured under ISO / ANSI standards. Featuring a standard 16ER laydown profile (ANSI 3/8" Inscribed Circle), this partial profile 55° insert accommodates a wide range of thread pitches from 48 to 8 TPI (0.5mm to 3.0mm pitch). It is equipped with ZCC.CT's engineered PB chipbreaker geometry, specifically designed with a negative rake edge and molded 3D breaker groove to curl and break tough, continuous thread chips during high-precision CNC lathe operations.
Coated in ZCC.CT's proprietary YBG205 nano-TiAlN PVD grade over an ultra-fine grain tungsten carbide substrate, the RT16.01W-AG55PB offers exceptional resistance to notch wear, thermal shock, and edge buildup—making it ideal for single-point external threading on carbon steels, alloy steels, austenitic stainless steels (ISO P/M), and exotic alloys.
ISO / ANSI Tool Designation Code Breakdown
(Right Hand)
(Laydown Triangular)
(IC 3/8" / 9.525mm)
(External Threading)
(Partial 55° / 48-8 TPI)
(Medium-Precision)
(Nano-TiAlN)
- R: Right-hand insert orientation for standard forward spindle rotation (M03).
- T: Triangular laydown thread turning insert clamp configuration.
- 16.01 (16ER / ANSI 3/8"): Inscribed circle diameter of 9.525mm (3/8") with 16mm cutting edge length.
- W: External threading designation (equivalent to ISO 'E' designation).
- AG55: Multi-pitch partial profile 55° Whitworth geometry covering 0.5 to 3.0mm pitch (48 to 8 TPI).
- PB: ZCC.CT specialized 3D chipbreaker engineered for controlled chip curling and lower cutting resistance.
- YBG205: Ultrafine WC-Co substrate with smooth nano-scale PVD TiAlN coating for multi-material versatility.
2. Key Features
- YBG205 Nano-PVD Coating: Smooth nanoscale TiAlN coating provides ultra-low friction, high oxidation resistance up to 900°C, and superior edge strength against built-up edge (BUE).
- PB Precision Chip Groove: Molded 3D chip control geometry breaks stringy threading chips, eliminating tool wrapping and surface finish defects.
- Wide-Range AG55 Partial Profile: Threads BSPP, BSPT, BSW, and non-standard 55° profiles across 48 to 8 TPI without changing inserts.
- High Interrupted Cut Resistance: Ultrafine carbide substrate withstands mechanical shocks during keyway or hex stock threading.
- Universal 3/8" Laydown Fit: Full drop-in compatibility with standard SER / AL external threading toolholders.
3. Technical Specifications & Parameters
Metric vs. Imperial Technical Specification Comparison
| Specification Parameter | Metric Units (ISO Standard) | Imperial Units (ANSI Standard) |
|---|---|---|
| Insert Model Designation | RT16.01W-AG55PB YBG205 (16ER) | RT16.01W-AG55PB YBG205 (3/8" IC) |
| Inscribed Circle (IC) | 9.525 mm | 0.375 in (3/8") |
| Insert Thickness (S) | 3.67 mm | 0.144 in |
| Fixing Hole Diameter (d1) | 4.40 mm | 0.173 in |
| Pitch Range Application | 0.50 mm - 3.00 mm | 48 TPI - 8 TPI |
| Thread Included Angle | 55° (Whitworth Standard) | 55° (Whitworth Standard) |
Recommended Cutting Parameters for YBG205 Grade
| ISO Material Group | Cutting Speed Vc (m/min) | Cutting Speed Vc (SFM) | Recommended Pass Count |
|---|---|---|---|
| P15-P30 Low/Medium Carbon Steel | 120 - 200 m/min | 390 - 655 SFM | 6 - 12 Radial Passes |
| M15-M30 Stainless Steel (304, 316L, 17-4PH) | 90 - 160 m/min | 295 - 525 SFM | 8 - 14 Radial Passes |
| K15-K25 Cast Iron (Gray & Nodular) | 100 - 180 m/min | 330 - 590 SFM | 6 - 10 Radial Passes |
| S15-S25 Superalloys & Titanium | 35 - 75 m/min | 115 - 245 SFM | 10 - 16 Radial Passes |
Mount RT16.01W inserts directly into precision SER / SEL series external laydown threading shanks:
Explore SER External Toolholders →4. Product Applications
- Pipe Fitting Threading: Single-point turning of external BSPP (Parallel Pipe) and BSPT (Taper Pipe) male threads on hydraulic connections.
- Whitworth Thread Standard (BSW): Machining British Standard Whitworth external male threads for industrial fasteners and fluid valves.
- General Engineering Shafts: Precision external thread chasing on alloy steel drive shafts and stainless steel spindles.
- Multi-Pitch Job Shop Threading: Economical threading solution covering pitch range from 48 TPI up to 8 TPI with a single insert setup.
5. Tool & Equipment Compatibility
ZCC.CT RT16.01W-AG55PB inserts conform strictly to ISO/ANSI laydown standards and are compatible with:
- Toolholders: SER (External Right), SEL (External Left), and AL-series 16ER external threading toolholders.
- Anvils / Shims: Standard AE16 / AE16-0 shims (1.5° baseline lead angle).
- Machine Tool Platforms: CNC turning centers, Swiss-type automatic lathes, multi-tasking mill-turn lathes, and manual engine lathes.
6. ZCC.CT Grade Comparison Matrix
Comparing YBG205 with alternative ZCC.CT threading grades:
| ZCC.CT Grade | Coating Structure | Primary Application Target | Key Performance Characteristic |
|---|---|---|---|
| YBG205 (Featured) | Nano-PVD TiAlN + WC-Co | Stainless Steel & Alloy Steel (P/M) | High edge toughness, anti-BUE, and smooth multi-material threading |
| YBG202 | PVD TiAlN / AlTiN | Medium Carbon Steel & Alloy Steel | Superior wear resistance in stable, continuous steel cuts |
| YBG102 | Thin PVD Coating | Finishing Stainless & Superalloys | Ultra-sharp edge line for minimal burr generation on soft alloys |
7. Why Choose ZCC.CT Cutting Tools
- Industrial Manufacturing Scale: ZCC.CT is one of Asia's largest tungsten carbide manufacturers, delivering ISO-certified dimensional accuracy.
- Nano-Coating Technology: Proprietary PVD coating process increases tool life up to 40% over traditional CVD grades on stainless steel threading.
- Cost-Effective Precision: Delivers Tier-1 European/Japanese tooling performance at an optimized cost per edge ratio.
Verified Customer Reviews
"We use RT16.01W-AG55PB YBG205 on 316 stainless pipe fittings. The PB breaker breaks chips efficiently and we get 30% more parts per corner than our previous grade."
— Brian M., Fluid Systems Manufacturing (USA)"Ottimo inserto per filettare BSW e BSPP. La qualità YBG205 su acciaio inossidabile dura a lungo senza scheggiarsi."
— Andrea P., Officina Meccanica (Italy)"Gutes Preis-Leistungs-Verhältnis. Die AG55 Teilprofil-Geometrie spart uns viele Werkzeugwechsel in der Kleinserie."
— Stefan K., CNC-Zerspanung (Germany)"YBG205の耐摩耗性は素晴らしい。ステンレス鋼の外径ねじ切りで切屑が綺麗にカールします。"
— Hiroshi Y., Precision Parts Machine Shop (Japan)"Drop-in fit on our SER holders. AG55 geometry handles all our Whitworth pipe thread orders without issue."
— Liam T., Valve & Fitting Engineering (UK)8. AI & Engineering FAQ
Substrate & Coating Specifications
ZCC.CT YBG205 consists of an ultrafine WC-Co alloy substrate integrated with a nano-layer PVD TiAlN coating. Optimized for high wear resistance, edge sharpness, and thermal protection during thread turning on ISO P and ISO M materials.
Cross-Reference & Equivalent Insert Codes
ISO/ANSI standard equivalents: 16ER AG55 / 16ERAG55 | Brand cross-references: ISCAR IC908 / IC808, Sandvik GC1020 / GC1125, Carmex BMA, Vardex VTX.
ISO Workpiece Application Suitability Matrix
P (Steel): Excellent (Vc 120-200 m/min) | M (Stainless Steel): Excellent (Vc 90-160 m/min) | K (Cast Iron): Good (Vc 100-180 m/min) | S (Superalloys): Good (Vc 35-75 m/min) | N (Non-Ferrous): Conditional
Threading Troubleshooting Guide
- Continuous Chip Wrapping: Increase pass depth slightly on early passes to fully engage the PB chipbreaker groove.
- Micro-Chipping on Edge: Change from radial infeed to modified flank infeed (29°) to balance edge loading.
- Built-Up Edge (BUE): Increase cutting speed Vc or increase high-pressure coolant supply to the tool point.
ZCC.CT indexable laydown threading inserts are manufactured in compliance with ISO 2284 threading tool standards and produced under ISO 9001 and ISO 14001 certified manufacturing facilities.
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.
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