Oil Safe grease fittings are used to connect greasing guns and tools to machinery, for lubrication. These fittings act as a check valve to prevent grease from escaping and preventing the ingress of contaminants. Oil Safe grease fittings are installed into untapped holes for providing a secure fit. They feature heavy-duty steel construction with zinc-plated finish for resistance against chemicals, oils & lubricants. Choose between straight & angled grease fittings, available in PTF and SAE-LT thread types on Raptor Supplies.