Comparison : Item # SSN017, Isoplast™ 3/8-16 Inch (in) Thread Size Fiberglass Hex Nut™
Item # SSN019, Isoplast™ 1/2-13 Inch (in) Thread Size Fiberglass Hex Nut™
Item # SSN018, Isoplast™ 5/8-11 Inch (in) Thread Size Fiberglass Hex Nut™
Item # SSN007, Isoplast™ 3/4-10 Inch (in) Thread Size Fiberglass Hex Nut™
Item # SSN013, Isoplast™ 1-8 Inch (in) Thread Size Fiberglass Hex Nut™