Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 042-8213 PARTS KIT C found under Parts Kit Test Set Electrosurgical Apparatus by Biotek Instruments Inc. The National Stock Number assigned to this part is 6545013122838, 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 042-8213 PARTS KIT C.