Attach a PROLUBE Steel Grease Fitting to a grease gun with 1/4”-18 Pipe threads (Special Extra Short) for targeted lubrication. Made in an IATF 16949-approved manufacturing facility, these grease fittings are manufactured from EN-1A steel and are heat-treated to be a minimum Rockwell hardness of 83 and case depth of ranging from 0.005" to 0.009". These fittings are then zinc plated with a thickness of 0.0002" (5 microns) for corrosion resistance with a salt spray life exceeding 72 hours. These fittings are then enhanced by a ball check mechanism featuring heat-treated springs to prevent grease escaping out. 

Standards and Compliances: 

• SAE 
• DIN 
• BS 
• JIS 
• IS 
• SAE J536
• ASTM B117