Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number APS18-111-63 found under Screw Machine by K And L Microwave Inc. The National Stock Number assigned to this part is 5305010102312, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like APS18-111-63.