Norton gearbox bottom mounting bolt plain nut for machines without centre stand. A new Norton gearbox mounting bolt nuts for upright boxes. ZP. Suit brazed frame Nortons with from 1934 to approx 1946. Covers all models ES2, 18, 19, 50, 500T, Original Part Numbers: 3620; E4533 - Gearbox bottom bolt nut x1 (plain - not shaped to hold centre stand spring) part of 9461 - gearbox bottom bolt and nut
