Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HN4P42-4-1 found under Stud Snap Fastener by Tecnotec Sarl. The National Stock Number assigned to this part is 5325014397539, 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 HN4P42-4-1.