Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SPK 1-15-50-30 found under Welding Machine Resistance by Sciaky Inc. The National Stock Number assigned to this part is 3432011435954, and the Federal Supply Class is 3432 Electric Resistance Welding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SPK 1-15-50-30.