Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number HBWV37L-X found under Test Set Water Turbidity And Col by Habco Incorporated. The National Stock Number assigned to this part is 6630016258072, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like HBWV37L-X.