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The MIDWEST FASTENER 63221 grease fitting is a lubrication fitting used in mechanical systems to add grease with a grease gun. The fitting is permanently installed by a threaded connection leaving a nipple connection the grease gun attaches to. By using the pressure in the grease gun, grease is added to the system through the grease fitting.
The MIDWEST FASTENER 63221 grease fitting is ideal for adding grease to mechanical systems.
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