Overview Reviews Product Description We stock a variety of malleable iron couplings including bushings, tees, crosses, unions, caps, and plugs in both black steel and galvanized steel. All of our malleable iron couplings feature pipe (NPT) threads and come in a range of sizes. Greenline Industrial Fitting Catalog New Greenline Industrial Fitting Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Greenline 3/8" Sch. 40 Black Iron Female NPT Cross G08X88M-038-038 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *