Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 511-0001 found under Idler Roll by M K Products Inc. The National Stock Number assigned to this part is 3438011498745, and the Federal Supply Class is 3438 Miscellaneous Welding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 511-0001.