Tungaloy 16ER 1.5ISO-B AH725 External Threading Carbide Insert (10pcs)

Tungaloy 16ER 1.5ISO-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 1.5ISO-B AH725

External ISO Metric Specialist | 1.5mm Pitch | AH725 Nano-PVD Grade

Product Overview

The Tungaloy 16ER 1.5ISO-B AH725 is a high-performance external threading insert engineered specifically for 1.5mm pitch ISO metric threads, the industrial standard for M10 coarse fasteners. This indexable carbide insert utilizes Tungaloy's premium AH725 PVD coated carbide, a grade famous for its extreme edge toughness and heat resistance during CNC machining. The integrated "-B" chipbreaker geometry is a game-changer for external threading, ensuring that chips are curled and broken instantly to prevent damage to the thread flanks. Made in Japan, this insert is the professional choice for precision machining in stainless steel, carbon steel, and high-strength alloys.

Technical Designation Breakdown

16
Size (IC)
E
External
R
Right Hand
1.5
Pitch (mm)
ISO
Metric
B
Chipbreaker

Technical Specifications: Metric vs. Imperial

Technical Feature Metric (ISO) Imperial (TPI)
Thread Pitch 1.5 mm 16.93 Threads Per Inch
Inscribed Circle (IC) 9.525 mm 3/8 inch
Standard Fastener M10 x 1.5 Coarse Common 16-18 TPI range

Pitch Selection Guidance: The 1.5ISO is a Full Profile insert. This ensures the tool forms the complete 60° thread—cutting the crest and root simultaneously. This is critical for external threading as it guarantees exact minor and major diameters, ensuring perfect interchangeability for M10 fasteners without extra deburring steps.

Material: AH725 PVD High-Grade Carbide

The AH725 grade is Tungaloy's premium choice for stainless steel turning and threading. It features a micro-grain substrate that resists edge chipping, paired with a nano-multilayered PVD coating. This long-tail keywords industry favorite ensures stable tool life and exceptional surface quality even in interrupted cuts or hardened materials.

-B Geometry: Advanced Chip Control (槽型)

External threading often suffers from "bird-nesting" chips that wrap around the workpiece. The -B chipbreaker geometry is engineered to curl chips tightly, breaking them into manageable lengths that fall away from the tool post. This protects the workpiece finish and allows for unmanned CNC machining cycles.

Recommended Cutting Parameters

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

  • Cutting Speed (Vc): 90 - 170 m/min (295 - 560 SFM)
  • Total Radial Depth: 0.92 mm
  • Number of Passes: 8 - 14 passes

*Pro Tip: For 1.5mm pitch, use a constant volume infeed method to distribute the wear evenly across the cutting edge.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Standard for M10 production" - Hans R., Germany
"Consistent 1.5mm pitch. The AH725 grade lasts significantly longer than generic brands in our 316 stainless runs."

⭐⭐⭐⭐⭐ "Excellent edge toughness" - Hiroshi S., Japan
"Very stable results on alloy steel. The surface finish is mirror-like. Original Tungaloy quality is unmatched."

⭐⭐⭐⭐ "Chips break beautifully" - Mark D., USA
"The -B chipbreaker really helps in external work. No more stopping the lathe to clear bird-nests."

⭐⭐⭐⭐⭐ "Best value for precision" - Luca G., Italy
"Flawless thread flanks. Fast delivery and authentic packaging. Highly recommended for CNC shops."

⭐⭐⭐⭐⭐ "Reliable and durable" - Sarah W., UK
"Consistently perfect M10 threads. Fits our SER2020K16 holders perfectly with zero vibration."

Technical Q&A

Q: Which tool holder does this insert fit?

A: It fits all standard **SER** external threading holders with a size 16 pocket (3/8" IC), such as the **SER2020K16**.

Q: Can I use this for internal threads?

A: No. This is an **ER** (External Right) insert. For internal threading, you must use the **IR** series.

Q: Is AH725 good for Titanium?

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

Expert Machining Tip: Grade Selection

For external threading, PVD grades like **AH725** are superior to CVD because they maintain a sharper edge profile. This prevents thread "tearing" in gummy materials, leading to superior accuracy and significantly longer tool life.

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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.