Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W 4 V 3 4 BSV GROOVED WHEEL found under Pulley Groove by Hamilton Caster And Mfg Company The. The National Stock Number assigned to this part is 3020012430616, and the Federal Supply Class is 3020 Gear Pulley Sprocket And Transmission Chain. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like W 4 V 3 4 BSV GROOVED WHEEL.