Overview
The Du-Bro 4-40 Blind Nuts are permanent-mount fasteners used for mounting engines, landing gear, cowls, hatches, and more on RC airplanes. The barbed flange grips the mounting material as you tighten the screw, locking the nut firmly in place — perfect for hard-to-reach mounting points.
Sold as a 4-pack.
Key Features
- 4-40 thread blind nuts
- Permanent-mount design
- No back-side access required
- 4 nuts per package
- Trusted Du-Bro quality
Performance Benefits
- Strong, permanent threaded mount
- Reliable hold under load and vibration
Usage Notes
- Drill correct pilot hole
- Press in place and tighten the screw to seat the barbs
Technical Specs
- Thread: 4-40
- Quantity: 4 per package
What's Included
- (4) Du-Bro 4-40 Blind Nuts
Summary
- 4-40 permanent-mount blind nuts
- 4-pack
