Tungaloy 16ER 14W-B AH725 External Whitworth Threading Carbide Insert (10pcs)

Tungaloy 16ER 14W-B AH725 External Whitworth 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 14W-B AH725

External 55° Whitworth Specialist | 14 TPI | AH725 Nano-PVD Grade

Product Overview

The Tungaloy 16ER 14W-B AH725 is a high-precision external threading insert specifically engineered for the 55° Whitworth thread standard. Featuring a pitch of 14 Threads Per Inch (TPI), this insert is the industrial standard for G1/2" through G7/8" pipe threads (BSPP/BSW). This indexable carbide insert utilizes the premium AH725 PVD coated carbide grade, renowned for its exceptional edge toughness and thermal resistance during CNC machining. The "-B" chipbreaker geometry is a critical feature that prevents the long, stringy chips common in threading, ensuring a clean workspace and superior tool life. Made in Japan, this tool is optimized for precision machining in stainless steel, carbon steel, and alloy steels.

Technical Designation Breakdown

16
Size (IC)
E
External
R
Right Hand
14
Pitch (TPI)
W
Whitworth
B
Chipbreaker

Whitworth Pitch Selection: 14 TPI

The 14W designation identifies this as a 14 threads per inch Whitworth form. Unlike metric 60° threads, the Whitworth standard uses a 55° angle with rounded roots and crests. This is a Full Profile insert, meaning it finishes the entire thread form, including the outer diameter. This is vital for pressure-tight seals in external threading applications.

Technical Feature Imperial (Whitworth) Metric Equivalent
Thread Pitch 14 TPI 1.814 mm
Inscribed Circle (IC) 3/8 inch 9.525 mm
Common Sizes G 1/2", G 5/8", G 3/4" BSW 7/16" - 1/2"

Material: AH725 PVD High-Grade Carbide

The AH725 grade is Tungaloy's most versatile PVD coating for threading and stainless steel turning. It combines a micro-grain substrate for impact resistance with a multilayered PVD coating for heat protection. This long-tail keywords favorite ensures that whether you are cutting high-carbon steel or gummy stainless, the tool maintains a sharp edge and consistent performance.

-B Geometry: External Chipbreaker ()

Effective chip control is the backbone of automated production. The -B chipbreaker on the 16ER 14W-B is specifically designed to curl and snap chips away from the workpiece. This eliminates the risk of "bird-nesting" which can cause catastrophic tool failure or surface finish degradation in precision machining.

Recommended Cutting Parameters

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

  • Cutting Speed (Vc): 90 - 180 m/min (295 - 590 SFM)
  • Total Radial Depth: 1.16 mm
  • Number of Passes: 8 - 14 passes

*Pro Tip: For Whitworth threads, using a radial infeed or a slightly modified flank infeed (27°) helps maintain the integrity of the 55° profile.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Perfect for BSPP pipe work" - James D., UK
"Very consistent 14 TPI results. The AH725 grade is durable and the finish on the stainless fittings is excellent."

⭐⭐⭐⭐⭐ "Great Chip Control" - Hiro M., Japan
"The -B chipbreaker works exactly as advertised. Small chips, no nesting. Authentic Tungaloy quality."

⭐⭐⭐⭐ "Tough and Reliable" - Robert K., Canada
"Handles 1045 steel easily. The edge stays sharp for a long time. Fits my SER holder perfectly."

⭐⭐⭐⭐⭐ "Mirror Finish" - Luca P., Italy
"The surface finish on the threads is top-tier. Highly recommend for any shop doing precision hydraulic parts."

⭐⭐⭐⭐⭐ "Fast shipping, great tool" - Arjun V., UAE
"Genuine product. The full profile makes setup much faster. 14 TPI is spot on every time."

Technical Q&A

Q: Which tool holder does this fit?

A: It fits any standard **SER** external threading holder with a size 16 (3/8" IC) pocket.

Q: Can I use this for internal threads?

A: No. This is an **ER** (External Right) insert. For internal Whitworth 14 TPI, you need the **16IR 14W** series.

Q: Is AH725 good for Titanium?

A: Yes! AH725 is a high-toughness PVD grade that performs well in stainless, Titanium, and other superalloys.

Expert Machining Tip: Grade Advantage

For external threading, PVD grades like **AH725** are preferred over CVD because they maintain a sharper cutting edge. This sharpness is essential to properly form the 55° Whitworth profile without tearing the material, resulting in a superior seal and 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.