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Master Precision Finishing in Stainless Steel and Exotic Alloys
Product Overview
"Which insert provides the smoothest surface finish and best chip breaking when finishing 304 or 316 stainless steel at high speeds?"
The TaeguTec TNMG 160404R-FS TT8020 is a premier PVD-coated insert specifically crafted for high-accuracy finishing in ISO M (Stainless Steel) and ISO S (Exotic Alloys). The TT8020 grade features a sub-micron substrate with advanced PVD technology for incredible edge sharpness and thermal stability. The FS (Finishing) chipbreaker is designed for low depth-of-cut applications, featuring a positive rake angle that slices through gummy materials to prevent work hardening and built-up edge (BUE). The Right-hand (R) orientation and 0.4mm corner radius ensure tight tolerances and a mirror-like Ra finish.
Key Core Advantages
PVD TT8020 Technology
Ultra-sharp edge retention and high resistance to chemical wear, making it ideal for medical and aerospace-grade alloys.
FS Chipbreaker Precision
Specifically engineered to break chips even at very low feed rates and small depths of cut, ensuring machine safety.
0.4mm Finishing Radius
Minimizes vibration and cutting force, allowing for superior dimensional accuracy on thin-walled components.
Technical Specifications
Insert Code Decoding: TNMG 160404R-FS
T Triangle
N Negative
M Tolerance
G Hole/Chip
160404 0.4 Rad
R-FS RH-Finish
Feature
Metric (ISO)
Imperial (ANSI)
Standard Designation
TNMG 160404R-FS
TNMG 331R-FS
I.C. / Thickness
9.525 mm / 4.76 mm
3/8" / 3/16"
Corner Radius
0.40 mm
1/64"
Recommended Cutting Data (TT8020 Grade)
Material Group
Vc (m/min)
fn (mm/rev)
Stainless Steel (ISO M)
140 - 250
0.05 - 0.20
Heat Resistant Alloys (ISO S)
40 - 80
0.05 - 0.18
Right-Hand Tool Matching
Applications & Tool Compatibility
Medical Devices: High-precision turning of surgical instruments in biocompatible stainless alloys.
Aerospace: Critical finishing of small fasteners and turbine components in titanium.
Compatibility: Standard ISO-compliant triangular holder pocket (16 size) such as MTJNR or PSSNR.
TaeguTec Stainless Grade Comparison
Grade
Coating
Primary Application
Tool Strength
TT8020
PVD
Precision Finishing
Edge Sharpness
TT9080
PVD
General Stainless Turning
High Versatility
TT9225
CVD
Heavy Stainless Cut
Thermal Stability
Why Choose TaeguTec TT8020?
Finishing stainless steel requires more than just a sharp edge; it requires a grade that can resist the intense heat and chemical reactions of exotic alloys. The TT8020 is TaeguTec’s answer to high-tolerance requirements. The FS chipbreaker acts like a precision blade, curling and breaking chips away from the workpiece to protect the freshly machined surface. By utilizing the triangular TNMG geometry with its 6 cutting edges, you achieve unmatched efficiency and a significantly lower cost-per-part compared to semi-finishing inserts forced into a finishing role.
★★★★★
"Mirror-like finish on 304 stainless. The FS geometry is a lifesaver for small diameter work."
— Robert M., USA
★★★★★
"Hervorragende Oberflächenqualität. Der Spänefluss ist auch bei geringer Zustellung perfekt."
— Stefan H., Germany
★★★★★
"Eccellente per il titanio. La precisione dimensionale è rimasta costante per tutto il lotto."
— Alessio P., Italy
★★★★☆
"Predictable tool life. Very high quality finishing grade."
— Kenzo W., Japan
Frequently Asked Questions
Q: Is this insert suitable for roughing? A: No. The FS chipbreaker is designed specifically for finishing (ap < 1.5mm). For roughing, we recommend the EM or ET chipbreakers in the TT9080 grade.
Q: Can I use this for dry machining? A: While the PVD coating can handle heat, we strongly suggest high-pressure coolant to prevent built-up edge when machining stainless steel.
Q: What does the "R" stand for in 160404R? A: "R" denotes Right-Hand orientation. This is critical for the specific geometry of the FS chipbreaker to function correctly with right-hand holders.
Looking for a TaeguTec 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.
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.
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