Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 30D4558 ITEM 6 found under Clamp by Power Paragon Inc. The National Stock Number assigned to this part is 5342010860878, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 30D4558 ITEM 6.