Overview
The Du-Bro 4-40 x 1/2" Socket Head Cap Screws are precision-machined fasteners ideal for engine mounts, servo trays, landing gear, and structural components on RC models. The internal hex socket allows for high installation torque without cam-out, and the black-oxide finish resists corrosion.
Sold as a convenient 4-pack — perfect for builds and repairs.
Key Features
- 4-40 thread, 1/2" length
- Internal hex socket drive
- Black-oxide plated finish
- 4 screws per package
- Trusted Du-Bro quality
Performance Benefits
- Strong, secure fastening
- Hex drive resists stripping
- Corrosion-resistant finish
- Clean, professional appearance
Usage Notes
- Ideal for engine mounts, servo trays, and structural builds
- Use a 3/32" hex driver for installation
- Apply thread locker for vibration-prone applications
Technical Specs
- Thread Size: 4-40
- Length: 1/2"
- Drive: Internal hex socket
- Finish: Black oxide
- Quantity: 4 per package
What's Included
- (4) Du-Bro 4-40 x 1/2" Socket Head Cap Screws
Summary
- 4-40 x 1/2" socket head cap screws
- Black-oxide finish
- Strong RC fastening hardware
- 4 per package
