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 Solid Hub Coupling - Flange 4" | Bore 1.50" $132.62 Quick View Solid Hub Coupling - Flange 4" | Bore 1.25" | M-Pilot Dia 2" | 4 Bolt $135.19 Quick View Solid Hub Coupling - Flange 3.410" | Bore 1.00" $151.08 Quick View Solid Hub Coupling - Flange 4" | Bore 1.25" $132.62 Quick View Solid Hub Coupling - Flange 4" | Bore 1.125" | M-Pilot Dia 1.966" | 4 Bolt - 10mm $132.62