Korloy ERM16-3.0ISO PC9030 Metric External Threading Insert, 3.0 Pitch (10pcs)
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The Original Korloy ERM16-3.0ISO PC9030 is a heavy-duty Full Profile External Threading Insert designed for 3.0mm pitch metric ISO threads. This is the largest standard pitch for the 16-size threading system, making it the primary choice for industrial fasteners such as M24 and M27. The full profile design ensures the entire thread form—including the crest—is cut to exact ISO standards in one setup. Utilizing the PC9030 PVD grade, this insert provides the critical edge toughness and heat resistance required for the deep, high-torque passes necessary for a 3.0mm pitch.
Maximum Pitch Performance: Threading a 3.0mm pitch on a 16mm insert pushes the tool to its limits. The ERM16-3.0ISO features a reinforced profile to prevent tip breakage, while the PC9030 coating acts as a thermal barrier against the extreme heat generated during deep-profile machining.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | ERM16-3.0ISO |
| Thread Type | Metric ISO (Full Profile) |
| Pitch | 3.0 mm (Heavy Duty) |
| Grade | PC9030 (Premium PVD) |
Core Performance Benefits:
- Full Form Accuracy: Cuts the thread crest to maintain a perfect outer diameter on M24+ bolts, eliminating manual chamfering or deburring.
- Engineered Edge Strength: Optimized substrate for the high-torque requirements of 3.0mm pitch machining.
- PC9030 Nanostructured Coating: Prevents tool-wear in tough-to-machine 304/316 stainless and high-tensile alloy steels.
- Improved Surface Integrity: Delivers a clean, smooth thread flank, reducing the friction and stress on the finished part.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Number of Passes |
|---|---|---|
| Stainless (304/316) | 50 - 100 m/min | 15 - 22 Passes |
| Medium Carbon Steel | 70 - 130 m/min | 12 - 18 Passes |
| Alloy Steel (Hardened) | 40 - 90 m/min | 18 - 25 Passes |
Compatible Tool Holders:
Ensure your holder can handle the high torque of a 3.0 pitch:
- External Holders: SER 2525M16 / SER 3232P16
Big Pitch Strategy: 16ER vs. 22ER
When machining 3.0mm pitch threads, the physical size of the insert matters:
Ideal for standard CNC lathes using 16mm systems. While efficient, it requires more light passes to manage the load on the smaller insert body compared to larger systems.
If your production involves constant heavy threading of M30+ bolts, consider switching to the 22mm system for even greater rigidity and fewer required passes.
Machinist's Pro Tip: For 3.0 ISO threads, the "Spring Pass" is mandatory. Due to the high cutting pressure, the tool will deflect slightly; one or two passes at the final depth without adding more feed will ensure the thread is true to size.
Packaging: 10 pieces per box.
Korloy ERM16 3.0 ISO price, 3.0mm pitch metric threading insert stainless steel, M24 bolt thread cutting insert, PC9030 grade for heavy metric threading, CNC external thread cutter 3.0 pitch
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.