Securely fastens 3/16 in. (4.8 mm) tubing in compatible Graco fluid and lubrication system fittings, helping maintain reliable, leak-resistant connections.
| Compatible Equipment | Application |
|---|---|
| Graco Grease Jockey Automatic Lubrication Systems | Secures 3/16-inch tubing connections in automatic grease distribution systems. |
| Graco Grease Jockey Chassis Lubrication Systems | Used on on-road vehicle lubrication systems requiring genuine 3/16 in. compression fittings. |
| Graco Single Line Parallel Lubrication Systems | Compatible with systems utilizing 3/16-inch tubing for oil or grease delivery. |
The Graco 556649 Nut, Tube, 3/16 is a genuine OEM compression tube nut engineered to secure 3/16-inch tubing within Graco automatic lubrication systems. Manufactured from durable brass, it provides a dependable mechanical connection that helps maintain leak-resistant performance while ensuring proper retention of lubrication tubing.
Designed for use with compatible compression sleeves and fittings, this tube nut plays an essential role in maintaining the integrity of lubrication circuits carrying grease or oil. Its precision-machined construction ensures proper fitment and long-lasting reliability in demanding industrial and mobile equipment applications.
The Graco 556649 tube nut is commonly used in automatic lubrication systems installed on commercial trucks, trailers, construction equipment, agricultural machinery, and other industrial equipment. It secures 3/16-inch lubrication tubing, helping maintain reliable lubricant flow throughout the system while supporting dependable long-term operation.
