Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL12371 FIND 37 found under Washer Spring Tension by Curtiss Wright Corp. The National Stock Number assigned to this part is 5310001261238, and the Federal Supply Class is 5310 Nuts And Washers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PL12371 FIND 37.