Description Product OverviewFor use in exterior and interior applications. Hex nut included.Product DetailsEye Diameter:0.56 in IDFinish:ZincIncludes:Hex NutMaterial:SteelOverall Length:4 inShank Length:3.02 inShoulder Diameter:0.21 inThread Length:2-3/4 inThread Size:1/4-20T P I/ Pitch:20Working Load Limit:80 lbFeaturesStandard machine screw threadsCourse 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