"ALEMITE" STAINLESS STEEL GREASE FITTING Alemite Stainless Steel Fittings withstand severe marine and industrial corrosive environments. All stainless steel fittings have two notches for easy identification.Highlights:Thread: 1/4"-28 taper.Overall Length: 17/32"Shank Length: 3/16"Hex Size: 5/16"Stainless steel fittings offer greater corrosion resistance than traditional carbon steel .Fittings can withstand extreme temperatures ranging from sub-zero to 480°C (896°F). Ideal for use in harsh chemical environments and marine applications. Stainless steel fittings are comprised of Type 303 stainless for fitting bodies, Type 440 stainless for balls and Type 302 stainless for tempered springs.