Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PK12 found under Instant Powder Kegs by Controlled Release Technologies Inc. The National Stock Number assigned to this part is 4130015205196, and the Federal Supply Class is 4130 Refrigeration And Air Conditioning Components. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PK12.