ROUND ALLEN Bolts
ROUND ALLEN bolts create a secure connection between the crank and bottom bracket. They feature a round-head design on the outside and an internal Allen interface for controlled and repeatable tightening during assembly
Both Silver Lock and Black Lock variants include thread-lock. This reduces the risk of loosening under vibration and repeated load. ROUND ALLEN bolts fit cranksets with M8x1 interfaces. They hold the crank securely in place and deliver consistent assembly results.
Key Benefits at a Glance
- Controlled Assembly: The round-head exterior and internal Allen interface allow precise, repeatable tightening during assembly.
- Thread-Lock for Secure Fastening: Thread-lock reduces the risk of loosening under vibration and repeated load.
This helps maintain a secure crank connection over time. - Surface Variants for Different Requirements: Choose silver or black coated variants based on corrosion protection needs or design preferences.
- Standardized Sizing: M8x1 thread size and strength class 10.9 fit cranksets designed for this interface.
Technical Specifications
FAQ
ROUND ALLEN bolts use a round-head exterior with an internal Allen interface for controlled and repeatable tightening during assembly.
All variants use an M8x1 thread for cranksets designed for this interface.
The difference is the surface finish. Silver Lock is silver ZN-FE-coated, while Black Lock is black ZN-FE-coated.
Thread-lock reduces the risk of loosening under vibration and repeated load. This ensures a secure crank and bottom bracket connection.
ROUND ALLEN bolts are designed for cranksets with M8x1 interfaces. Compatibility depends on the specific crank and bottom bracket.
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Our B2B Process
We work step by step to clarify what fits your setup before production begins.
1. Tell Us What You Need: Share your technical requirements and expected volumes. Our experts check compatibility with your frame and crankset and confirm the right bottom bracket for your setup.
2. Test Before You Commit: You receive a full offer and technical specification. Sample parts are also available so you can verify fit, assembly, and performance before series production starts.
3. Produce with Confidence: Once approved, we align production and delivery with your schedule. Clear documentation ensures a smooth handover into your assembly process.
