Tungaloy 16ER 2.0ISO-B AH725 External Threading Carbide Insert (10pcs)

Tungaloy 16ER 2.0ISO-B AH725 External Threading Carbide Insert (10pcs)

$94.43 USD

✓ In Stock & Fast Dispatch: Order processing: typically 1–3 business days after confirmation.
✓ Global Shipping: Delivery: generally 5–20 business days, depending on destination and shipping method.
✓ Guaranteed Quality: Check model, dimensions and compatibility before ordering. | Direct Factory Outlet
✓ Technical Support: Need grade selection help? Contact Engineer

💰 Bulk savings 2-9 pcs · 6% OFF | 10+ pcs · 12% OFF

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Description

TUNGALOY 16ER 2.0ISO-B AH725

External ISO Metric Specialist | 2.0mm Pitch | AH725 Nano-PVD Grade

Product Overview

The Tungaloy 16ER 2.0ISO-B AH725 is a high-performance external threading insert designed for 2.0mm pitch ISO metric threads, the standard for M14 and M16 coarse fasteners. This indexable carbide insert features the advanced AH725 PVD coated carbide grade, delivering superior edge toughness and thermal stability for high-reliability CNC machining. The specialized "-B" chipbreaker geometry is essential for external operations, providing aggressive chip curling to prevent surface scratching and "bird-nesting" around the workpiece. Made in Japan, this insert is the professional choice for precision machining in stainless steel, carbon steel, and heat-resistant alloys.

Technical Designation Breakdown

16
Size (IC)
E
External
R
Right Hand
2.0
Pitch (mm)
ISO
Standard
B
Chipbreaker

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (TPI)
Thread Pitch 2.0 mm 12.7 Threads Per Inch
Inscribed Circle (IC) 9.525 mm 3/8 inch
Application External M14/M16 Heavy Duty Coarse

Pitch Selection Guidance: The 2.0ISO is a Full Profile insert. This ensures the insert forms the complete thread profile—crest, root, and flank—in one cycle. This is critical for external threading, as it guarantees the correct major diameter and profile geometry, eliminating the need for separate deburring or secondary OD turning adjustments.

Material: AH725 PVD Nano-Coating

The AH725 grade is Tungaloy's premium choice for stainless steel turning and threading. It features a micro-grain carbide substrate with a multilayered PVD coating. This long-tail keywords industry favorite provides exceptional resistance to notch wear and built-up edge, resulting in significantly extended tool life in tough machining environments.

-B Geometry: Advanced Chip Control (槽型)

Efficient chip evacuation is vital for high-speed external work. The -B chipbreaker forces chips to curl tightly, breaking them into manageable lengths. This prevents surface damage and ensures the mirror-like surface finish required in precision machining.

Recommended Cutting Parameters

Optimized for P (Steel) and M (Stainless Steel):

  • Cutting Speed (Vc): 80 - 150 m/min (260 - 490 SFM)
  • Total Radial Depth: 1.23 mm
  • Number of Passes: 10 - 16 passes (Recommended for 2.0 pitch)

*Pro Tip: For 2.0mm pitches, use a modified flank infeed (29°) to reduce cutting forces and prevent vibration.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Perfect for M16 Bolts" - Stefan K., Germany
"The 2.0 pitch is spot on. The chip control is much better than standard inserts we used before on our CNC lathes."

⭐⭐⭐⭐⭐ "Tough in Stainless" - Takeshi Y., Japan
"Using AH725 on 316 stainless steel. Excellent tool life and consistent profile accuracy. Genuine Tungaloy quality."

⭐⭐⭐⭐ "Great Chip Management" - Robert H., USA
"The -B geometry really helps. No more bird-nesting in my threading cycles. Very clean finish."

⭐⭐⭐⭐⭐ "Smooth Surface Finish" - Giovanni F., Italy
"Thread flanks are incredibly smooth. Perfect for high-pressure industrial fittings."

⭐⭐⭐⭐⭐ "Best Wholesale Value" - Thomas B., UK
"Fast shipping and original Japanese inserts. These last a long time even in high-tensile steel."

Technical Q&A

Q: Which tool holder does this fit?

A: This fits any external threading holder with a 16-size (3/8" IC) pocket, such as the **SER2020K16** or **SER2525M16**.

Q: Can I cut internal threads with this?

A: No. This is a **16ER** (External Right-hand). For internal work, you require the **16IR** series.

Q: Is AH725 suitable for Titanium alloys?

A: Yes! AH725 is a high-toughness PVD grade designed for steel, stainless, and heat-resistant superalloys like Titanium and Inconel.

Expert Machining Tip: Grade Selection

For external threading, PVD grades like **AH725** are superior to CVD grades because they maintain a sharper cutting edge. This sharpness is essential to reduce cutting force and prevent thread "tearing," leading to much better tool life and thread accuracy.

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Technical FAQ & Buying Guide

How do I choose the correct specification?

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.

How can I check compatibility with my existing setup?

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.

What quantity and price unit am I 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.

How should I choose cutting parameters?

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.

Are bulk discounts available?

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.

When will my order ship and arrive?

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.