Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number T 12639 found under Wrap Monofilament by Draeger Safety Inc. The National Stock Number assigned to this part is 4220012479690, and the Federal Supply Class is 4220 Marine Lifesaving And Diving Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like T 12639.