Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SK4050-142-101 found under Bolt Eye by Skyline Industries Llc. The National Stock Number assigned to this part is 5306011807694, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SK4050-142-101.