Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 54-335-126 found under Gage Depth Micrometer by Fred V Fowler Company Inc. The National Stock Number assigned to this part is 5210013030518, 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 54-335-126.