3/8-16 UNC Thread Repair Kit with Stainless Inserts (10PCS)

Product Overview

This 3/8-16 UNC thread repair kit is designed to create a finished 3/8-16 UNC internal thread using 0.520 inch inserts. Prior to ordering, ensure to verify the size and compatibility based on bolt diameter, pitch, insert length, usable hole depth, and wall thickness since the drill and tap dimensions differ from the finished internal thread.

Included Components

The kit comprises:

• 10 solid 304 stainless steel inserts
• 1 HSS drill bit
• 1 HSS tap
• 1 counterbore tool
• 1 installation driver
• 2 threadlockers

Utilise the supplied tools and inserts; components from other systems may not be compatible.

Durability and Construction

The one-piece solid 304 stainless steel inserts are designed to provide a robust and permanent repair solution, superior to traditional wire coils. These inserts resist corrosion and misalignment, eliminating the risk of unraveling during operation, making them suitable for high-stress applications.

Counterbore Depth Control

The counterbore tool helps create a recessed seat, allowing the insert to finish slightly below the mating surface. Be mindful to avoid shallow cuts that may leave the insert proud or excessive cuts that could reduce support. A tap handle is not included; confirm access for tools before proceeding.

Application Guidelines

This kit is intended for repairing stripped internal threads in materials like aluminium, cast iron, and steel that have sufficient surrounding material and access for drilling. Verify the specific requirements for applications such as engine components, transmission housings, ATV/UTV parts, and motorcycles, as well as high-precision bicycle frames.

Pro Tip

To prevent the bushing from loosening upon later removal, apply threadlocker to screw threads before installation. Exercise caution with counterboring to avoid oil leakage; check depth frequently during operation.