Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2173040 found under Pin Shoulder Headless by B And H Industries Inc. The National Stock Number assigned to this part is 5315014296971, 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 2173040.