Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 243443 found under Collar Shaft by Lds Test And Measurement Llc. The National Stock Number assigned to this part is 3040004892549, 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 243443.