Home / GENERAL FASTENERS / Rivet Nuts / Countersunk Stainless Steel Reduced Head – Semi Hex Shank – Open Type Countersunk Stainless Steel Reduced Head – Semi Hex Shank – Open Type Countersunk stainless steel reduced head with semi hex shank and open type insert nut Used with tools also available through Concept Fasteners Categories: GENERAL FASTENERS, Rivet Nuts Product ID: 3594