Overview Reviews Product Description G19 series fittings are unique to the mining industry and are not typically found in other applications.These mining fittings are made from plated steel.Please note: the 1" hex nut is used with G19S-100-050, G19S-100-075, and G19S-100-100 female mining stems. Greenline Industrial Fitting Catalog New Greenline Industrial Fitting Catalog Product Videos Custom Field Product Reviews Write a Review Write a Review × Greenline 1" Mining Stem Union G19DS-100 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *