Overview
The Du-Bro 4-40 x 1-1/4" Mounting Bolts & Blind Nuts set is a complete engine-mounting hardware kit for RC airplanes. Includes 4 bolts, 4 flat washers, 4 lock washers, and 4 blind nuts — everything needed to securely mount your engine to the firewall.
Sold as a 4-set package.
Key Features
- 4-40 x 1-1/4" bolts
- Complete engine-mount hardware
- Flat washers, lock washers, and blind nuts included
- 4 sets per package
- Trusted Du-Bro quality
Performance Benefits
- Secure, vibration-resistant engine mount
- Permanent blind nut installation
- Complete kit — no extra parts needed
Usage Notes
- Press blind nuts into firewall
- Use lock washers between flat washer and bolt head
Technical Specs
- Thread: 4-40
- Length: 1-1/4"
- Quantity: 4 sets per package
What's Included
- (4) 4-40 x 1-1/4" Bolts
- (4) Flat Washers
- (4) Lock Washers
- (4) Blind Nuts
Summary
- 4-40 x 1-1/4" mounting bolts and blind nuts
- Complete engine-mount kit
- 4 sets per package
