Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number JHP99-157 found under Cone And Rollers Tapered Roller by Hollingsworth John R Co. The National Stock Number assigned to this part is 3110006061841, and the Federal Supply Class is 3110 Bearings Antifriction Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like JHP99-157.