Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 38A-1 found under Adapter Torque Limiting by Hank Thorn Co. The National Stock Number assigned to this part is 5120010032366, and the Federal Supply Class is 5120 Hand Tools Nonedged Nonpowered. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 38A-1.