Premium TC Bros Radius Style Threaded Steel Bungs
TC Bros radius style threaded steel bungs are precision-engineered fabrication components designed for high-stress mounting applications. These bungs feature a radiused base that provides improved weld penetration and strength compared to standard flat-base bungs. Perfect for custom motorcycle builds where maximum strength and reliability are critical.
Available Options:
Thread Sizes: 5/16-18 or 3/8-16
Lengths: Short or Long
-
5/16-18 Thread / Short - Compact radius bung for lighter components
-
5/16-18 Thread / Long - Extended length radius bung for additional thread engagement
-
3/8-16 Thread / Short - Larger thread radius bung for heavier components
-
3/8-16 Thread / Long - Maximum strength radius bung for heavy-duty applications
Key Features:
-
Radiused Base - Curved base design improves weld penetration and strength
-
Superior Strength - Ideal for high-stress mounting applications
-
Precision Threading - Clean, accurate threads for reliable fastener engagement
-
Multiple Sizes - Four configurations to match your specific needs
-
Quality Steel Construction - Durable materials for long-lasting performance
-
Professional Quality - Manufactured to TC Bros' exacting standards
Why Choose Radius Style Bungs:
Radius style bungs are the preferred choice for high-stress applications where maximum weld strength is critical. The radiused base allows for deeper weld penetration and creates a stronger bond between the bung and the mounting surface. This design is especially important for components that experience vibration, impact, or heavy loads such as engine mounts, suspension mounting points, and heavy accessory mounts.
Common Applications:
- High-stress mounting points
- Suspension mounting
- Engine mount applications
- Heavy accessory mounting (luggage, passengers, etc.)
- Applications subject to vibration or impact
- Professional builds requiring maximum strength
Other Fabrication Hardware Options:
Depending on your specific application, you might need a different style of bung or mounting solution:
Alternative Bung Styles:
-
Standard Threaded Steel Bungs - Traditional flat-base bungs for general fabrication. Best for standard applications where maximum strength isn't critical. Available in more length options (1/2", 1", 1.5").
-
Coped Steel Bungs - Feature a curved notch that fits flush on round tubing. Perfect when welding to frame tubes or round bars for a professional appearance.
-
Counterbore Steel Bungs - Designed specifically for socket head bolts with a recessed counterbore for flush, low-profile installations. Ideal for clean, finished appearance.
Non-Threaded Mounting Solutions:
-
Weld-On Steel Mounting Tabs - When you need to mount brackets, fenders, or accessories without threaded fasteners, our mounting tabs provide secure weld-on mounting points in 7 different styles.
Specifications:
- Material: Steel
- Thread Sizes: 5/16-18 or 3/8-16
- Lengths: Short or Long
- Style: Radius (curved base for improved weld strength)
- Finish: Raw steel (ready for welding and finishing)
Perfect For:
- High-performance custom motorcycle builds
- Professional fabrication shops
- High-stress mounting applications
- Chopper and bobber builds
- Custom frame building
- Applications requiring maximum strength and reliability
Installation Notes:
These radius style bungs are designed to be welded onto your motorcycle frame or components at the desired mounting location. The radiused base requires proper welding technique to achieve maximum strength. We recommend:
- Use appropriate welding techniques to ensure full penetration around the radius
- Test-fit components before welding bungs in place
- Ensure proper clearance for fasteners and moving parts
- Clean and prep mounting area before welding
- Paint or powder coat after installation to prevent rust
- Use correct thread size for your application (5/16-18 for lighter components, 3/8-16 for heavier)
Professional installation is strongly recommended for high-stress applications. Each TC Bros radius style steel bung is precision-manufactured to exacting standards for maximum strength and reliable performance on your custom motorcycle build.
