The GRACO 184100 is a coupling nut, a threaded fastener used to securely connect components within GRACO pumping equipment. Its material is not explicitly specified in available documentation, but GRACO coupling nuts are typically made from durable metals such as steel or stainless steel for strength and corrosion resistance. The nut is intended for use in assembling and maintaining the coupling mechanism between rods and other components in GRACO pumps.

Key Features:

• Coupling Nut
• Metal (likely steel or stainless steel)
• Compatible with GRACO pump assemblies where coupling nuts are required (e.g., Check-Mate 200 series, 1:1 Extruder)
• Designed for secure connection of displacement rods and connecting rods
• Facilitates reliable assembly and disassembly during maintenance
• Engineered for durability and repeated use in industrial environments

Applications:
Used in the assembly and maintenance of GRACO pumps, particularly in connecting displacement rods to other internal components. Commonly found in lubrication, fluid transfer, and maintenance equipment.

Installation Notes:

• Using genuine GRACO parts ensures proper fit, function, and safety within GRACO equipment, reducing the risk of leaks, misalignment, or equipment failure.
• Place the coupling nut on the displacement rod, then insert coupling collars as required
• Screw the coupling nut onto the connecting rod loosely before final tightening
• Hold the connecting rod flats with an adjustable wrench to prevent turning during tightening
• Torque the coupling nut to the specified value (e.g., 41–48 N.m or 30–35 ft-lb for some models)
• Refer to the specific equipment manual for exact torque and installation procedures
• Regularly inspect the coupling nut for wear or damage
• Replace if threads are stripped or if there is visible damage
• Use only compatible replacement parts for repairs