Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 3671 found under Gage Plug Plain Cylindrical by Allison Transmission Holdings Inc. The National Stock Number assigned to this part is 5220002140831, and the Federal Supply Class is 5220 Inspection Gages And Precision Layout Tools. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 3671.