Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BN100257 found under Bearing Roller Needle by Ambac International Corporation. The National Stock Number assigned to this part is 3110002273241, 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 BN100257.