AKS4T-420-260 AK-Series Insert AVK – 1/4-20 Thread, Yellow-Zinc, 25pcs

Description

Product Overview

The AKS4T-420-260 AK-Series Insert is engineered by AVK Industrial Products to meet the demanding requirements of modern machining environments. Constructed from high‑grade steel and finished with a yellow‑zinc trivalent coating protected by a clear top layer, this insert provides exceptional wear resistance and corrosion protection. The insert is sized for a 1/4‑20 thread profile and offers a versatile grip range of .165‑.260, making it suitable for a broad spectrum of hole diameters, including the common 25/64 size. Each pack contains 25 pieces, ensuring you have ample inventory for continuous production runs or on‑site repair tasks. The product complies with ROHS standards and is manufactured in the United States, guaranteeing consistent quality and traceability.

Usage

This insert excels in a variety of industrial applications. Whether you are performing precision threading on CNC machines, conducting manual tapping in a workshop, or executing maintenance repairs on equipment, the AKS4T-420-260 delivers reliable performance. Its robust coating allows it to withstand high temperatures and abrasive conditions often encountered in metalworking, aerospace component fabrication, and automotive part production. The insert’s design facilitates quick tool changes, reducing downtime and increasing overall productivity. It is especially valuable for technicians who need a dependable solution for medium‑sized threads where both strength and finish quality are critical.

Why Choose Us

Choosing AVK means selecting a partner committed to engineering excellence and customer satisfaction. Our inserts undergo rigorous testing to verify dimensional accuracy, coating adhesion, and thread integrity. The yellow‑zinc trivalent coating not only extends tool life but also minimizes the risk of galling, ensuring smoother operation and cleaner finishes. As a US‑based manufacturer, we provide rapid support, easy access to replacement parts, and a transparent supply chain. Our dedication to ROHS compliance reflects our responsibility to environmental stewardship and safe workplace practices.

Key Features

• Durable yellow‑zinc trivalent coating with clear protective layer for extended tool life
• Optimized 1/4‑20 thread profile fits a wide range of medium‑size applications
• Versatile grip range .165‑.260 accommodates holes from .165 up to .260 inches
• Pack of 25 inserts ensures you have enough inventory for high‑volume projects
• US‑based manufacturing with responsive customer support and easy part replacement

FAQ

What material is the insert made from?

The insert is fabricated from high‑strength alloy steel, providing the rigidity needed for precise threading while the yellow‑zinc trivalent coating adds corrosion resistance.

Can this insert be used on both CNC and manual machines?

Yes, the AKS4T-420-260 is designed for compatibility with both computer‑controlled and hand‑operated tapping equipment, offering flexibility across different shop floor setups.

What is the recommended coolant for use with this insert?

Standard cutting fluids compatible with steel workpieces are suitable. Using a coolant that contains mild lubricants helps to reduce heat buildup and further extends the insert’s service life.

Is the pack suitable for large‑scale production?

Absolutely. Each pack contains 25 pieces, allowing manufacturers to maintain a steady supply without frequent reordering, which is ideal for high‑volume production lines.

How does the yellow‑zinc coating improve performance?

The coating provides a hard, wear‑resistant surface that protects the underlying steel from oxidation and abrasive wear, resulting in longer intervals between tool changes and consistent thread quality.