Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 042197 found under Clip Spring Tension by Pilkington Optrnics Incrprtion. The National Stock Number assigned to this part is 5340014081957, and the Federal Supply Class is 5340 Hardware Commercial. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 042197.