Comments about Seafarer Stainless Steel Eyebolts:
Unlike most partially-threaded fasteners with which I am familiar, this product has an unthreaded portion with a substantially greater diameter (.390) than the threads. This isn't a bad idea in principle (more shear strength), but nothing on the site indicated the difference. Consequently I ordered hardware (bushings and washers) that is incompatible without milling or reaming.