Stainless Steel Turned Eye Bolt - 5/16-inch Thread Diameter - 5-inch Bolt Length Premium quality stainless steel turned eye bolts suitable for marine applications Grade 316 stainless steel has superior corrosion resistance and strength over grade 304 5/16-inch thread diameter; includes nut and washer 5-inch bolt length; see description for threaded lengths. Length overall equals bolt length plus 2-1/4-inches Electronic polishing leaves bright finish without thread-strength degradation of mirror finish process