OOK Screw Eyes Metal Hooks

Use on both sides of wood picture frame or canvas for hanging!, Use on frames or canvas to attach picture wire for hanging. Popular bright zinc plate

How to Install Screw Hooks Easily Using Eye Hook Screws - ManMadeDIY

Eye Bolts

Hanging Canvas Hardware at Jerry's Artarama

Found cleaning out an old workshop. Fits in the palm of my hand

Eye Bolts: Type & Considerations for Choosing One

How-To Guide to Select and Install Eye Bolts

Ook Picture Hanging brand

Forged Eye Bolts, Oval Eye Bolts - Rax Industry

screws - How Can I Attach a Chain to an Eye Hook? - Woodworking