Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HL146-6-3-18 found under Stud Shouldered by Sps Technologies Inc. The National Stock Number assigned to this part is 5307015213212, 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 HL146-6-3-18.