Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number STM3744-4D22 found under Bolt Close Tolerance by Fairchild Corp. The National Stock Number assigned to this part is 5306011368613, and the Federal Supply Class is 5306 Bolts. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like STM3744-4D22.