National Hardware N221-150 Eye Bolt, 5/16-18 Thread, 1 in L Thread, 3/4 in ID Dia Eye, 1.22 in L Shank, Steel, Zinc [SKU: ORG4407508]

Standard machine screw threads, Course machine screw thread on the extra large sizes (larger than 1/2 x 12), When subjected to 312 hr of salt fog spray testing, zinc-plated hardware showed severe corrosion while hardware with WeatherGuard protection withstood these harsh conditions with very little deterioration. [QTY/UOM: 1EA / 1EA]