Check nut, 1/4-28 threadNAS1291-4 - Check NutsSKU: NAS1291-4$1.00PriceThread Size1/4-28FinishSteelDrill OptionCadmium PlatedQuantity*Add to CartSpecificationsNAS1291-4Cross ReferencesNAS1291-4Technical Details-4ApplicationsStandard https://cdn.hasaerosupply.com/img/NAS1291-4.jpg