Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 42C16505 found under Chain Weldless by Acco Industries Inc. The National Stock Number assigned to this part is 4010002621551, and the Federal Supply Class is 4010 Chain And Wire Rope. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 42C16505.