Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number S81910B-05 found under Stuffing Tube by Servicair B W Elliott Mfg Co Llc. The National Stock Number assigned to this part is 5975013842394, and the Federal Supply Class is 5975 Electrical Hardware And Supplies. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like S81910B-05.