3/8″ UNF Hex Dome Nut

A 1/4 BSF hexagon set bolt (part threaded) Under head dimension: 1". Thread length: 1/2". Standard hexagon size (.445" A/F)Head machined flat (no markings).

A 1/4 BSF hexagon set bolt (threaded up to head)Under head dimension: 3/8". Standard hexagon size (.445" A/F)Head machined flat (no markings).

A 5/16 BSF hexagon bolt (part threaded)Under head dimension: 1-5/8".Thread length: 5/8" Standard hexagon size (.525" A/F)Head machined flat (no markings).