Sealey AB030SN Steel Nut Assortment 320pc 1/4″-1/2″UNC Features and Benefits:Steel nut assortment, manufactured to DIN 934.Coarse thread – Imperial UNC nuts designed for use with UNC Bolts and studs.Contents (Approximate Quantity): 1/4″UNC (x120), 5/16″UNC (x120), 3/8″UNC (x50), 1/2″UNC (x30).Supplied in partitioned box.Model No. AB030SNCommodity Code: 7318190090Country Of Origin: CHN