Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ST3M453-5D16 found under Bolt Close Tolerance by Houston Precision Fastener Llc. The National Stock Number assigned to this part is 5306003219307, 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 ST3M453-5D16.