Korloy ERM16-AG55 PC9030 Universal 55° External Threading Insert (10pcs)
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The Original Korloy ERM16-AG55 PC9030 is a highly versatile Partial Profile 55° External Threading Insert. Designed for maximum flexibility, the "AG" range allows a single insert to produce various thread pitches ranging from 0.5mm to 3.0mm (48 - 8 TPI). This makes it the ultimate cost-saving solution for job shops handling diverse 55-degree thread standards, such as BSW (British Standard Whitworth) and BSP (British Standard Pipe). Coated with the premium PC9030 PVD grade, it ensures high wear resistance and toughness when machining Stainless Steel, Alloy Steel, and Carbon Steel.
One Insert, Multiple Pitches: Unlike full profile inserts, the AG55 partial profile doesn't cut the crest of the thread. This allows you to use one tool for multiple thread sizes, significantly reducing your inventory costs while maintaining Korloy's legendary precision in tough materials.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | ERM16-AG55 |
| Thread Angle | 55° (Universal) |
| Pitch Range | 0.5 - 3.0 mm (48 - 8 TPI) |
| Grade | PC9030 (Premium PVD for Stainless) |
Core Performance Benefits:
- Extreme Versatility: Covers a wide spectrum of 55° threads, perfect for low-to-medium volume production of various sizes.
- PC9030 PVD Coating: Optimized for stainless steel; features high thermal stability to prevent edge deformation during deep threading passes.
- Industrial Edge Sharpness: Peripheral grinding ensures a sharp, clean cutting action, reducing burr formation on thread flanks.
- Cost-Efficient: Reduces the number of unique inserts required in your tool crib.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Pass Strategy |
|---|---|---|
| Stainless Steel (304/316) | 80 - 140 m/min | 6 - 14 Passes (Adjust for Pitch) |
| Carbon Steel (P) | 100 - 180 m/min | 5 - 12 Passes (Adjust for Pitch) |
| Alloy Steel (SCM440) | 60 - 120 m/min | 8 - 16 Passes (Adjust for Pitch) |
Compatible Tool Holders:
Standard fit for 16-size external threading systems:
- External Threading Bar: SER 1616H16 / SER 2020K16 / SER 2525M16 / SER3232P16
Partial Profile vs. Full Profile: The 55° Guide
When should you choose the AG55 partial profile?
Best for Versatility. Great for general repair or job shop work. Note: You must pre-turn the workpiece to the exact major diameter before threading, as this insert does not "top" the thread.
Best for High-Volume Production. Each insert is dedicated to one specific pitch and "tops" the thread, ensuring the crest is perfectly formed and deburred automatically.
Machinist's Pro Tip: Because the AG55 is a partial profile insert, the tip radius is designed to be small enough for 0.5mm pitch. When cutting 3.0mm pitch with this insert, ensure you use the correct number of passes to avoid excessive wear on the small tip radius.
Packaging: 10 pieces per box.
ERM16-AG55 Korloy price, universal 55 degree threading insert, BSP thread cutting insert stainless steel, partial profile 55 threading tips, PC9030 grade for Whitworth threads
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.