Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NA2-4043 found under Rubber Sheet Solid by Hi Shear Corporation. The National Stock Number assigned to this part is 9320002021631, and the Federal Supply Class is 9320 Rubber Fabricated Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like NA2-4043.