Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 193 139 R1 found under Stud Rear Wheel by Gw Technologies Pty Ltd. The National Stock Number assigned to this part is 5307008629771, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 193 139 R1.