Comparison : Item # AEHS8-1015-3.8, Rivet Nut - Round, Half-Hex Body, Large Flange
Item # AEHS8-1015-3.8B, Rivet Nut - Round, Half-Hex Body, Large Flange
Item # AEHS8-1015-3.8BS, Rivet Nut - Round, Half-Hex Body, Large Flange
Item # AEHS8-1015-3.8S, Rivet Nut - Round, Half-Hex Body, Large Flange
Item # AEHS8-1015-7.9, Rivet Nut - Round, Half-Hex Body, Large Flange