Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 275SZ1 found under Loop Strap Fastener by Buckles International Inc. The National Stock Number assigned to this part is 5340008775500, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 275SZ1.