Image 1 of 1 5" OD Flange x 3 1/2" D x 3 1/4" $135.04 This coupling measures approximately 5" OD (flange) x 3 1/2" D overall and has an approximate 3 1/4" pilot diameter. Add To Cart Added! This coupling measures approximately 5" OD (flange) x 3 1/2" D overall and has an approximate 3 1/4" pilot diameter. You Might Also Like Quick View 4" Solid Coupling for 3/4" Shaft $134.30 Quick View Coupling Type, Solid ; Shaft Size, 1-1/4 inch ; Flange Diameter, 3.945 inch. $141.63 Quick View Solid Hub Coupling - Flange 5.75" | Bore 1.50" | F-Pilot Dia 3.0" | 6 Bolt $418.77 Quick View Solid Hub Coupling - Flange 4" | Bore 1.50" $132.62 Quick View Solid Hub Coupling - Flange 4.75" | Bore 1.125" | F-Pilot Dia 2.5" | 6 Bolt $277.86