Gearbox adjuster, Norton laydown gearbox, pre swingarm (ass)

Norton gearbox front chain / gearbox adjuster bolt and nut for laydown box pre swingarm.  Suit Nortons with laydown gearbox from 1949 to approx 1953 (rigid and plunger models). Covers all models ES2, 19, 50, 500T, 7, 77
Original Part Numbers:
D12/314 - gearbox front chain adjuster bolt and nut
made up of [ D12/1009; - gearbox front chain adjuster bolt nut
                   D12/1008; - front chain adjuster bolt only ]