Team Losi Racing 4-40 x 5/8 RC Car Part - LOSA6221

The Team Losi Racing LOSA6221 is a 4-40 x 5/8 inch hardware screw used as a replacement fastener across compatible TLR and Losi RC car models. Small fasteners like this are easy to lose during maintenance or strip under repeated assembly, so keeping a stock of the correct size on hand keeps your build moving without delays. The LOSA6221 part number makes it straightforward to confirm you're ordering the right specification for your specific model.

Key Features

• 4-40 thread size with 5/8 inch length — a common fastener specification used across multiple TLR and Losi RC platforms
• OEM Team Losi Racing part, so the thread pitch and dimensions match the original hardware your model was built with
• Suitable as a direct replacement when original screws are lost, stripped, or damaged during regular maintenance
• Part number LOSA6221 allows for precise reordering without guesswork on sizing

What's Included

• LOSA6221 4-40 x 5/8 inch screw(s)

What You Need

• Appropriate hex driver or screwdriver to fit the screw head type