Dubro 4-40 Bolts & Blind Nuts Tool - DUB127

The Dubro DUB127 4-40 Bolts and Blind Nuts set provides reliable metric-standard fasteners for securing RC aircraft components during builds and repairs. These 4-40 hardware fasteners are a staple in RC construction, used to mount servo horns, control surface hardware, landing gear brackets, and other structural parts where a secure, removable fixing is needed. Blind nuts are pressed or bonded into a material so the bolt can be threaded in from the outside without needing access to the rear — a practical solution for enclosed airframes and tight assemblies.

Key Features

• 4-40 thread size is a common standard in RC aircraft hardware, making these fasteners widely compatible with commercially available RC fittings and accessories
• Blind nut design allows installation in locations where you cannot access the back of the material, useful for foam, balsa, and composite airframe construction
• Suitable for securing servos, control horns, landing gear, and other hardware that requires a firm, load-bearing fixing point
• A useful supply to keep in your workshop for both new builds and ongoing repairs where fasteners are lost or damaged

What's Included

• Dubro DUB127 4-40 bolts and blind nuts set

What You Need

• Appropriate installation tool for setting blind nuts (e.g. blind nut setting tool or pliers)
• Thread-locking compound if a permanent or vibration-resistant fixing is required