Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 9850-30571-0042 found under Parts Kit Fastener by Drs Tactical Systems Ltd. The National Stock Number assigned to this part is 5325016041102, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 9850-30571-0042.