Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number KR542-26 found under Pin Grooved Headless by R G Rollin Co. The National Stock Number assigned to this part is 5315013454738, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like KR542-26.