Product Specifications
Brand: STONE
Product Name: Chainring Bolts
Application: Road Bike / Mountain Bike
Material: CrMo Steel
Thread Size: M8
Diameter: 10 mm
Color: Black / Silver
Package: 5 pcs chainring bolts
Available model: 7.5 mm / 8.5 mm / 10.5 mm (nut height)
Installation Torque: 11-12 Nm
Use 5mm hex wrench to install
Color, Size & Weight
Black
7.5 mm / 8.5 mm
Surface Treatment: Black Electrophoresis
Approx. Weight: 4.7 g / 4.9 g per 5 pcs
Silver
7.5 mm / 8.5 mm / 10.5 mm
Surface Treatment: Nickel Plating
Approx. Weight: 4.4 g / 5.0 g / 6.3 g per 5 pcs
Size Definition
【Nut height is used as the model name】
7.5 mm for single chainring
Clamping Distance: 6–8 mm
For Clamped Product Thickness > 6.5 mm
8.5 mm for double chainring
Clamping Distance: 7–9 mm
For Clamped Product Thickness > 7.5 mm
10.5 mm for chainring guard
Clamping Distance: 9–11 mm
For Clamped Product Thickness > 9.5 mm
Features
- Strong CrMo Steel Construction: Stronger and more durable than aluminum alloy chainring bolts, suitable for road bikes, mountain bikes, and high-load riding.
- Durable Surface Treatment: Black electrophoresis or silver nickel plating helps improve wear resistance, corrosion resistance, and long-term color stability.
- High-Precision Inner Hex Socket: Provides better tool engagement and helps reduce the risk of slipping or rounding during installation.
- Reliable Torque Performance: Supports installation torque up to 16 Nm under proper installation conditions.
- Easy Installation: Requires a chainring nut tool and a 5 mm Allen wrench for the inner hex socket.
- First Installation Note for 8.5 Spec: Due to the protective surface coating, the thread may feel slightly tight during the first installation. This is normal and will become smoother after initial installation.
Important Notes
Please choose the correct specification according to your chainring and crankset thickness.
Manual measurement may result in slight size deviation.
The specification name refers to the nut height, not the total bolt length.
Different chainring and crank setups may require different bolt lengths.
Do not force installation if the bolt length is not suitable.
Package Includes
5 pcs STONE steel chainring bolts
