Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BB100NNS26ITEM21 found under Gage Pressure Dial Indicating by Air System Components Inc. The National Stock Number assigned to this part is 6685014630987, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BB100NNS26ITEM21.