Helical Insert 304SS 5/16-18 PK12 by Helicoil Threaded Insert

Description

Product Overview

The Helicoil Helical Insert 304SS PK12 is engineered to provide a robust, corrosion‑resistant solution for repairing or reinforcing threaded holes sized 5/16‑18. Constructed from premium 304 stainless steel, this insert offers exceptional durability in demanding environments, from heavy‑duty machinery to precision equipment. Its helical design creates a strong, continuous thread that mimics the original fastener geometry, ensuring a secure grip that can withstand high torque and repeated cycles without stripping. The insert measures 2.6 x 2.6 x 0.7 inches and weighs only 0.63 ounces, making it easy to handle while delivering maximum strength. Made in America, it reflects strict quality control standards and a commitment to reliable performance. The universal fit means it can be used across a wide range of applications, eliminating the need for multiple part numbers and simplifying inventory management. Whether you are a maintenance technician, a manufacturing engineer, or a DIY enthusiast, this helical insert provides a cost‑effective alternative to re‑machining or replacing entire components, reducing downtime and extending the service life of your equipment.

Usage

Designed for versatility, the Helicoil Helical Insert 304SS PK12 excels in a variety of industrial settings. In automotive repair shops, it restores stripped threads in engine blocks, transmission housings, and chassis components, allowing technicians to re‑install original bolts with confidence. In aerospace maintenance, the insert’s stainless‑steel composition meets stringent corrosion‑resistance requirements, making it suitable for aircraft structural repairs where weight and reliability are critical. Manufacturing plants benefit from its quick installation process—simply drill the appropriate pilot hole, tap the insert, and the repaired thread is ready for use. The insert also performs well in marine applications, where exposure to saltwater demands materials that resist rust and degradation. Its universal fit accommodates a range of bolt sizes, so users can standardize on a single insert for multiple part numbers, streamlining procurement and reducing inventory complexity. The product’s compact size enables use in confined spaces, and its lightweight nature minimizes added mass to the assembly, an important factor in precision equipment and robotics.

Why Choose Us

Choosing the Helicoil Helical Insert 304SS PK12 means selecting a product backed by decades of engineering expertise and a reputation for quality. Helicoil, a trusted brand in threaded insert technology, manufactures this insert in the United States, adhering to rigorous ISO standards and employing advanced metallurgical processes to ensure consistent material properties. The 304 stainless‑steel alloy provides superior resistance to oxidation, chemical exposure, and temperature fluctuations, guaranteeing long‑term performance even in harsh environments. Our inserts undergo comprehensive testing, including torque resistance, pull‑out strength, and corrosion simulations, to validate that they meet or exceed industry benchmarks. In addition to the product’s technical merits, we offer responsive customer support and a clear warranty policy, giving you confidence that any issues will be addressed promptly. Our commitment to sustainability is reflected in the use of recyclable materials and efficient manufacturing practices, aligning with corporate responsibility goals. By partnering with us, you gain access to detailed installation guides, technical resources, and a network of experts ready to assist with complex applications, ensuring that you achieve optimal results on every project.

Key Features

• Premium 304 stainless‑steel construction delivers unmatched corrosion resistance for long‑lasting durability.
• Universal fit accommodates multiple bolt sizes, simplifying inventory and reducing part variety.
• Helical design provides a continuous thread that resists stripping under high torque conditions.
• Compact dimensions allow installation in tight spaces without adding excessive weight.
• Backed by Helicoil’s dedicated customer support and warranty for peace of mind.

FAQ

What size pilot hole is required for this insert?

The recommended pilot hole diameter is 0.250 inches (6.35 mm). Drilling to this size ensures proper engagement of the helical threads while maintaining the structural integrity of the surrounding material.

Can this insert be used in aluminum components?

Yes, the 304SS Helical Insert is compatible with aluminum. Its stainless‑steel composition resists galling, and the helical design distributes load evenly, making it suitable for both steel and aluminum substrates.

Is any special tool needed for installation?

Installation requires a standard tap set sized for the insert’s thread pitch (5/16‑18). A torque wrench can be used to achieve the recommended installation torque of 8‑10 Nm for optimal performance.

How does the insert perform under high‑temperature conditions?

The 304 stainless‑steel material retains its mechanical properties up to 870 °C (1600 °F), making the insert suitable for high‑temperature environments such as engine bays and industrial furnaces.

What warranty does Helicoil provide for this product?

Helicoil offers a limited one‑year warranty covering material defects and manufacturing errors. If the insert fails under normal use within this period, a replacement will be provided.