HeliCoil R1185-4 1/4-20 Thread Repair Insert R-Pack 1/4-20 1-1/2″ DIA

Description

Product Overview

The HeliCoil R1185-4 R‑Pack is a precision‑engineered helical threaded insert designed to restore damaged 1/4‑20 inch coarse threads with complete coverage. Constructed from high‑grade alloy steel, the insert offers exceptional tensile strength and resistance to wear, ensuring that repaired components perform at or above original specifications. Each unit includes a single hexagonal, countersunk insert that measures 2.69 inches in length, providing ample thread engagement for robust load distribution. The unfinished, machined exterior finish allows for easy installation using standard hand‑powered tools, while the internal thread matches the original 1/4‑20 size, guaranteeing a perfect fit.

Manufactured by Stanley Engineered Fastening, a trusted name in industrial fastening solutions, the R1185‑4 benefits from rigorous quality control processes and is fully compliant with industry standards for thread repair kits. Its compact packaging (one piece per pack) makes inventory management simple, and the product is proudly made in the USA, reflecting a commitment to domestic manufacturing excellence.

Usage

This insert is ideal for a wide range of industrial and scientific environments where thread integrity is critical. Whether you are maintaining heavy‑duty machinery, repairing equipment housings, or refurbishing structural components, the R1185‑4 provides a reliable solution for restoring thread functionality without the need for costly part replacement. The hand‑powered installation process requires only a standard tap wrench and a matching tap, making it accessible to technicians, maintenance crews, and DIY enthusiasts alike.

Because the insert offers complete coverage of the thread length, it eliminates the common issue of partial repairs that can lead to premature failure. The hexagonal head design ensures a secure grip during installation, while the countersunk shape allows the insert to sit flush with the surrounding material, preserving the original surface profile. This makes the R1185‑4 especially suitable for applications where space constraints or aesthetic considerations are important.

Why Choose Us

Choosing the HeliCoil R1185‑4 means selecting a product backed by decades of engineering expertise and a reputation for durability. Our inserts are forged from alloy steel that undergoes heat treatment to achieve optimal hardness, providing resistance to stripping and deformation even under high cyclic loads. Each insert is inspected for dimensional accuracy, guaranteeing that the internal thread matches the specified 1/4‑20 coarse profile.

In addition to material quality, we offer comprehensive customer support. Our technical team can assist with installation guidance, tap selection, and troubleshooting, ensuring that you achieve a successful repair on the first attempt. We also provide a straightforward return policy for any defective units, reinforcing our confidence in product reliability.

Key Features

• High‑strength alloy steel construction delivers long‑lasting thread repair.
• Complete coverage of the 2.69‑inch thread length prevents weak points.
• Hexagonal, countersunk head provides easy hand‑powered installation.
• Machined, unfinished finish allows for seamless integration with existing components.
• Dedicated technical support and hassle‑free returns for peace of mind.

FAQ

What size threads does the R1185‑4 repair?

The insert is designed for 1/4‑20 inch coarse threads, providing a full‑length repair for that specific size.

Can I install the insert without special equipment?

Yes. The R1185‑4 is hand‑powered and requires only a standard tap wrench and the matching 1/4‑20 tap, both of which are commonly found in most tool kits.

Is the insert compatible with both steel and aluminum substrates?

While the insert itself is made of alloy steel, it can be installed in both steel and aluminum base materials, provided the hole is properly prepared and the appropriate tap is used.

How many inserts come in each package?

Each R‑Pack contains a single insert, allowing you to order exactly the quantity you need without excess inventory.

What warranty does HeliCoil offer for this product?

HeliCoil provides a limited warranty against manufacturing defects, and our customer service team is ready to address any concerns you may have during the product’s lifecycle.