Bow eyes will serve as a heavy duty security loop for your small craft.  This is 304 Stamped Stainless Steel and comes with adjustable finish nuts. The 3/8" shafts have rolled threads.

The 1-1/16" bow eye has a thread length of 1-1/2" and is used as a security loop on the Eastport Pram, Passagemaker, Dory, Jimmy Skiff, and Skerry. Ideal where high strength is required.  

The 1-1/2" bow eye has a thread length of 2-1/2", and is used on the Peeler Skiff and Pocketship, ideal where very high strength is required.