Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3374-1 found under Boom Hoisting Marine by Trumpy John And Sons Inc. The National Stock Number assigned to this part is 2020005843418, and the Federal Supply Class is 2020 Rigging And Rigging Gear. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3374-1.