grease fitting: material:mild steel yellow zinc plated size:1/4 ... /16",1/2" thread:UNF,NPT,SAE,BSPT,PTF Grease Fitting/Grease Nipple Material: mild steel, stainless steel, brass Angle: ... type square-type, pin-type, ball-type and other special types Metric Size: M6x1,M8x1,M10x1,M12x1,M13x1,M14x1,M16x1 ... · linear guides· hydraulic cylinders· drives· chains· axels · pumps grease fitting 1/4"-28UNF 45degree