Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 556-3001-001 found under Standoff Threaded Spacing by J F C Electronics Inc. The National Stock Number assigned to this part is 5340007264690, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 556-3001-001.