Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 137-6511 PARTS KIT found under Parts Kit Electrosurgical Apparatus by Tyco Healthcare Group Lp. The National Stock Number assigned to this part is 6545012891974, 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 137-6511 PARTS KIT.