Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JH3-001-39 found under Spring Spiral Torsi by Hollingsworth John R Co. The National Stock Number assigned to this part is 5360003648819, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JH3-001-39.