Milton products cover a broad range of application in various industries such as automotive fleet maintenance and construction We have achieved the industry leader in high quality pneumatic accessories and fitting proudly living up to our heritage of superior products and reliability Features. 05 in MNPT x 037 in FNPT Reducer Bushing Hose Fitting. 12 MNPT x 38 FNPT brass reducer bushings are used to assemble. New hoses or replace old fittings on hoses when reduction in pipe size is required. 12 male x 38 female national pipe thread. Brass reducer bushing. Replaces old fittingsSpecifications. NPT Thread Size 12 Male NPT x 38 Female NPT. Material Type Brass. Weight 0335 Lbs