Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 274 WELD COOL PLATE NO. 10 found under Lens Helmet Welders by Aearo Company. The National Stock Number assigned to this part is 4240002768940, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 274 WELD COOL PLATE NO. 10.