Thank you for selecting Aerospace Aviation 360 for 9421 by Keystone Electronics Corp under Screws. We are proud to be an ASAP Semiconductor owned and operated website, a leading distributor of aviation and aerospace part numbers like 9421. To help us better understand your parts requirements, please fill out an RFQ form for part number 9421 with your details, and our customer executive will respond to your RFQ in 15 minutes or less.