Appropriate for both home and industrial applications, this National Hardware steel wire eye bolt is equipped with standard machine screw threads (coarse thread on extra-large sizes larger than 1/2" x 12") and an included hex nut. Bolt size = Safe Working Load (SWL)3/16" = 40 lb SWL1/4" = 80 lb SWL5/16" = 90 lb SWL3/8" = 160 lb SWL1/2" = 300 lb SWL5/8" = 560 lb SWL3/4" = 675 lb SWL*For size 5/8" and up, packaging is bulk barcoded. | HILLMAN 2160BC Eye Bolts | Size 1/2" x 4"