Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 4100-100 found under Light Work Site by Western Technology Inc. The National Stock Number assigned to this part is 6230014628530, and the Federal Supply Class is 6230 Electric Portable And Hand Lighting Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 4100-100.