Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 861142-1 found under Head Micrometer by Raytheon Company. The National Stock Number assigned to this part is 5210010566196, and the Federal Supply Class is 5210 Measuring Tools Craftsmens. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 861142-1.