THREADED 1-10 BACKPLATE/ADAPTER FOR 5" LATHE CHUCKS (3900-3309)

Threaded 1-10 Backplate/Adapter for 5" Lathe Chucks No bolt holes. Machining is required before mounting your chuck to ensure concentricity. For 3 & 4-jaw chucks. A is 125mm. B is 1"-10. D is 25.4mm smooth bore. E is 6.35mm. F is 56mm. G is 10mm. g is 4mm. G + h is 26mm. g + H is 30mm. K is 100mm. Shipping Weight: 3.9 lbs