M5 Rubber Well Nuts – Motorcycle Windshield Bolt Kit 10 Pcs

Keep your motorcycle windshield and fairings firmly in place with these M5 Rubber Well Nuts. This 10-piece kit pairs a brass insert with a flexible rubber body to create a vibration-dampening, anti-deformation fastener — ideal for securing motorcycle windshields, panels, and bodywork with a clean, rattle-free finish.

Constructed from premium brass and rubber, each well nut expands on tightening to grip the mounting hole securely from the inside, distributing load evenly and preventing cracking on plastic fairings or windshields. The CCC-certified design meets metric M5 (5 mm / 0.2 in) thread specifications, so fitment is precise and reliable.

Key Features

• Material: Brass insert + rubber body — sturdy, flexible, and corrosion-resistant
• Thread Size: M5 metric (5 mm / 0.2 in)
• Kit Contents: 10 rubber well nuts
• Application: Motorcycle windshields, fairings, bodywork panels, and general plastic/fiberglass assemblies
• Anti-Deformation: Rubber compound resists deformation under sustained tension
• Vibration Dampening: Rubber body absorbs road vibration to keep panels secure and quiet
• External Testing Certification: CCC
• Item Weight: 20 g

Why Well Nuts?

Unlike standard nuts that require access to both sides of a panel, well nuts insert from a single side — making them the go-to fastener for blind holes in motorcycle fairings and windshields. The rubber sleeve also acts as a gasket, sealing the hole against moisture and reducing the risk of cracking thin plastic panels.

What's in the Box?

• 10 × M5 Rubber Well Nuts (5 mm metric)

For more guidance on selecting the right fasteners for vehicle applications, visit the U.S. Consumer Product Safety Commission (CPSC) for general hardware safety information.

Frequently Asked Questions

Q: What are M5 rubber well nuts used for on motorcycles?

A: M5 rubber well nuts are used to fasten windshields, fairings, and bodywork panels on motorcycles. They insert into a pre-drilled hole and expand when a bolt is tightened, gripping the panel from the inside. The rubber body provides vibration dampening and acts as a seal, keeping panels secure and reducing rattling on the road.

Q: What material are these well nuts made from?

A: These well nuts feature a brass threaded insert surrounded by a rubber body. The brass provides durable, corrosion-resistant threads, while the rubber delivers flexibility, vibration absorption, and an anti-deformation grip on the mounting surface.

Q: How many well nuts are included in the kit?

A: Each kit includes 10 M5 rubber well nuts, giving you plenty for a full windshield replacement or fairing repair, as well as extras for future use.

Q: Will these fit my motorcycle's M5 windshield mounting holes?

A: Yes. These well nuts are designed to the standard M5 metric thread specification (5 mm / 0.2 in). Always verify your motorcycle's bolt hole diameter and thread pitch before installation to ensure a correct fit.