Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number M2L-2979-1-1A ITEM 8 found under Gage Pressure Dial Indicating by Mackay Communications Inc. The National Stock Number assigned to this part is 6685014412166, 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 M2L-2979-1-1A ITEM 8.