Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SRB 145NSU R134A found under Display Case Mechan by Low Temp Industries Inc. The National Stock Number assigned to this part is 7310015103846, 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 SRB 145NSU R134A.