(20 pieces) Carbon steel -plated black mother -child rivet lock rivets M4X18mm.

Description

Rivets are made of of  Carbon stee half head hollow rivets, which is strong and rust-proof and durable;

Also known as Maternal rivet,dowel pins are used to retain parts in a fixed position,maintain alignment between different parts,or to join different;

Easy to install:Half -circular inner hexagonal lock screw, so that the pin can be easily inserted into the mounting hole;

Widely used for DIY Remote Control Model, Model Toy ect. Work great on Gear shaft, motor shaft, airplane, aircraft toys, short support shaft, shaft pocket model.

NOTE:

2. Please confirm the size when purchasing.

3. Item color displayed in photos maybe showing slightly different from the real object,Please take the real one as standard.