Tungaloy 16IR 14W-B AH725 Internal Whitworth Threading Carbide Insert (10pcs)

Tungaloy 16IR 14W-B AH725 Internal 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

Add to WishlistCompare
WhatsApp Inquiry

american expressmasterpaypalvisaapple paygoogle payshopify pay
Description

TUNGALOY 16IR 14W-B AH725

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

Product Overview

The Tungaloy 16IR 14W-B AH725 is a high-performance internal threading insert meticulously engineered for the 55° Whitworth thread standard (BSW/BSPP). Featuring a pitch of 14 Threads Per Inch (TPI), it is the industrial benchmark for G1/2" through G7/8" internal pipe threads. 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 specialized "-B" chipbreaker geometry is essential for internal threading, aggressively curling chips in confined spaces to prevent surface scoring and "bird-nesting." Made in Japan, this tool is optimized for precision machining in stainless steel, carbon steel, and alloy steels.

Technical Designation Breakdown

16
Size (IC)
I
Internal
R
Right Hand
14
Pitch (TPI)
W
Whitworth
B
Chipbreaker

Technical Specifications: Metric vs. Imperial

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"

Pitch Selection Guidance: The 14W is a Full Profile insert. This is critical for internal threading as it forms the complete 55° thread profile—including the crest and root radius—simultaneously. This ensures the minor diameter is perfectly calibrated to BSPP standards, guaranteeing pressure-tight fits for hydraulic and pneumatic components without manual adjustment passes.

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 chipping, paired with a nano-multilayered PVD coating for extreme heat resistance. This long-tail keywords industry favorite ensures stable tool life and exceptional surface quality in both continuous and interrupted internal cuts.

-B Geometry: Aggressive Chip Management (槽型)

In internal boring operations, chip room is scarce. The -B chipbreaker geometry on the 16IR 14W-B is specifically designed to curl and snap chips into small "C" shapes. This is critical for automated CNC machining, as it prevents chip accumulation that could damage the thread or the boring bar.

Recommended Cutting Parameters

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

  • Cutting Speed (Vc): 80 - 160 m/min (260 - 525 SFM)
  • Total Radial Depth: 1.16 mm
  • Number of Passes: 8 - 14 passes

*Pro Tip: For 14 TPI internal work, use a modified flank infeed (27° to 29°) to reduce tool pressure and prevent chatter in long-overhang boring bars.*

Global Verified Reviews

⭐⭐⭐⭐⭐ "Standard for our hydraulic shop" - George L., UK
"Consistent 14 TPI results. The AH725 grade handles the gummy 316 stainless perfectly. No burrs on the internal crests."

⭐⭐⭐⭐⭐ "Great Chip Control" - Hiroshi K., Japan
"The -B chipbreaker is a lifesaver in small bores. Chips come out clean. Genuine Tungaloy quality is always reliable."

⭐⭐⭐⭐ "Tough in Alloy Steel" - Robert M., USA
"Very durable. I've used these for hundreds of internal threads in 4140 steel and they hold up much better than cheaper brands."

⭐⭐⭐⭐⭐ "High Precision" - Lukas H., Germany
"Full profile is perfect for G 1/2" pipe work. Fits our SNR bars exactly. Mirror-like finish inside the threads."

⭐⭐⭐⭐⭐ "Fast shipping, great tool" - Arjun P., UAE
"Original Japanese product. The 14W pitch is spot on. Very happy with the tool life in stainless production."

Technical Q&A

Q: Which boring bar does this insert fit?

A: It fits any standard **SNR** internal threading bar with a size 16 (3/8" IC) pocket.

Q: Can I use this for external Whitworth threads?

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

Q: Is AH725 good for interrupted cuts?

A: Yes! AH725 is a high-toughness PVD grade specifically designed to withstand the impacts of interrupted cuts or scale on the material surface.

Expert Machining Tip: Grade Advantage

For internal threading, PVD grades like **AH725** are superior to CVD because they maintain a sharper cutting edge. This sharpness is essential to properly form the rounded crests and roots of the 55° Whitworth profile, reducing cutting force and improving tool life in confined spaces.

© Technical Content by cnchome-beyond.com - Scraping Protection Active

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.