Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 10990 100B 870 PN S2 found under Push Button by Hamworthy Kse Ab. The National Stock Number assigned to this part is 5930014395433, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 10990 100B 870 PN S2.