Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number CHC-440-6 found under Stud Self Locking by Penn Engineering And Manufacturing. The National Stock Number assigned to this part is 5307004863376, and the Federal Supply Class is 5307 Studs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like CHC-440-6.