Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 19T125(3INWIDEX0.125THK found under Mat Reinforcing Fibrous Glass by Claremont Sales Corporation The. The National Stock Number assigned to this part is 9340015374413, and the Federal Supply Class is 9340 Glass Fabricated Materials. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 19T125(3INWIDEX0.125THK.