Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number FIR-1443-15010A found under Tool Special Spec by Fatigue Technology International. The National Stock Number assigned to this part is 4920015962245, 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 FIR-1443-15010A.