Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SP4149-165-25 found under Coupling Clamp Groo by Norma Germany Gmbh. The National Stock Number assigned to this part is 5342121774070, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SP4149-165-25.