Cat Eye, Towild - Bicycle Light Holder Locking Nut (M16 × 2.5 Replacement Part)

Bicycle Light Holder Locking Nut (Replacement Part)

Lost or damaged the locking nut from your bicycle light mount? Instead of replacing the entire light holder, print a new one.

This model is a replacement locking nut designed for bicycle light holder assemblies that use a threaded clamping mechanism. The part securely tightens the mount, helping keep your light firmly attached to the handlebar during daily commuting, recreational rides, and rougher terrain.

The design was modeled from an existing light holder and optimized for straightforward FDM 3D printing. It is intended as a practical repair part that can bring otherwise unusable mounts back into service.

Dimensions & Compatibility

• Thread Size: M16 × 2.5

• Nominal Inner Diameter: 15.70 mm

• Thread Type: Metric

• Designed For: Bicycle light holder locking mechanism

Features

• Direct replacement for damaged or missing locking nuts

• Simple and fast print

• No supports required (depending on orientation)

• Helps extend the life of existing bicycle accessories

• Lightweight and durable design

• Ideal as a spare part for your repair kit

Recommended Print Settings

• Layer Height: 0.20 mm

• Walls: 3–4

• Infill: 40–100% (higher infill recommended for durability)

• Material: PETG, ABS, ASA, or PLA+

• Supports: Not required

• Brim: Optional

Notes

• Verify dimensions against your original part before printing.

• PETG or ASA is recommended for outdoor use due to improved heat and weather resistance.

• Print at 100% scale unless adjustments are required for your specific mount.

Design and description by Ved Deokar , licensed CC-BY.