The LubeGear Grease Fittings are a testament of commitment to precision and quality, backed by IATF 16949-approved manufacturing facility. Manufactured from EN-1A steel, these fittings are heat-treated conforming to SAE J534 specifications on the greasing end with a minimum Rockwell hardness of 83 with a case depth ranging from 0.005 in. to 0.009 in. , these fittings guarantee exceptional durability. Enhanced by a ball check mechanism featuring heat-treated springs, they ensure extended functionality. Our zinc-plated steel fittings, meet SAE J534 standards, offers corrosion resistance with a salt spray life exceeding 72 hours. Complying with SAE, DIN, BS, JIS, and IS standards, these accurately dimensioned fittings, provide a durable partner on the job site.