Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 309-6647 PARTS KIT B2 found under Parts Kit Electrosurgical Apparatus by Tyco Healthcare Group Lp. The National Stock Number assigned to this part is 6545013225168, 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 309-6647 PARTS KIT B2.