Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number D12 58R TH 10YD 4C 8R found under Pin Lock by Aerofast Inc. The National Stock Number assigned to this part is 5315013776170, and the Federal Supply Class is 5315 Nails Machine Keys And Pins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like D12 58R TH 10YD 4C 8R.