Prolube 46020 1/4" -18 Pipe Threads (Extra Special Short) Grease Fitting, Straight, 5 Pack

PROLUBE 46020 1/4″ – 18 Pipe Threads (Extra Special Short) Grease Fitting (5 Pack). Manufactured to the most stringent quality standards -TS16949 approved manufacturing. Fitting profile & dimensions are accurately controlled & conform to SAE, DIN, BS, JIS & is standards. Grease fittings are heat treated to SAE J534 specification with hardness on greasing end to a minimum of 83 on Rockwell 15N scale with a case depth of 0.005″ (0.13 mm) to 0.009″ (0.23 mm). steel fittings are plated in yellow zinc with a plating thickness of 0.0002″ (5 microns) confirming to SAE J534 specification & have a guaranteed salt spray life of over 72 hours to red rust.