Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number C31B2507-1 found under Connecting Link Rig by D F P Manufacturing Corp. The National Stock Number assigned to this part is 3040011274942, and the Federal Supply Class is 3040 Miscellaneous Power Transmission Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like C31B2507-1.