Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number MHW-311-001AB found under Screw Cap Socket He by L3 Communications Corp. The National Stock Number assigned to this part is 5305016011708, 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 MHW-311-001AB.