Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 52512 found under Pin Brush Holder by Stewart And Stevenson Power Inc. The National Stock Number assigned to this part is 5315007518985, 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 52512.