Alemite AL1820-1 Giant Buttonhead Grease Fitting Nptf

Product Description

The ALEMITE AL1820-1 is a giant buttonhead grease fitting designed for high-volume lubrication points that require a larger-than-standard coupler interface. The fitting measures 1-1/16 x 1/2 inches in body dimensions, features a 7/8 inch hex for wrench installation, and threads in via a 1/2 inch NPTF connection. Weighing just 0.14 pounds, it is a direct-install component used by lubrication technicians, fleet mechanics, and industrial maintenance professionals on heavy equipment, large bearings, and commercial grease systems where a standard buttonhead fitting cannot deliver adequate grease flow or coupler engagement.

The AL1820-1 is suited for heavy-duty lubrication applications found in industrial facilities, fleet maintenance shops, and construction equipment service environments. The giant buttonhead profile accommodates high-capacity grease couplers, making it a practical choice for high-cycle lubrication points on large machinery, agricultural equipment, and commercial vehicles. It is sold individually and is well-matched for use wherever a 1/2 inch NPTF threaded port is present and a larger coupler interface is required.

Key Features

• Giant buttonhead profile for use with high-volume grease couplers
• 1/2 inch NPTF thread for a pressure-rated, leak-resistant connection
• 7/8 inch hex allows standard wrench installation and removal
• Compact and lightweight at 0.14 pounds for easy handling in tight spaces
• Body dimensions of 1-1/16 x 1/2 inches for fitment at large lubrication ports

Compatibility

Designed as an OEM-style replacement or service fitting for industrial and heavy-duty lubrication systems equipped with 1/2 inch NPTF threaded grease ports requiring a giant buttonhead coupler interface.

Installation Notes

Installation is performed by lubrication technicians or mechanical maintenance personnel using a standard wrench on the 7/8 inch hex. Relieve system pressure and wipe the port clean before threading in the fitting to prevent contamination. Apply appropriate thread sealant compatible with NPTF fittings and torque to snug without over-stressing the port threads. Inspect the buttonhead seat for damage before attaching the grease coupler.

Technical Specifications

• Body Dimensions: 1-1/16 x 1/2 inches
• Hex Size: 7/8 inch
• Thread Type: 1/2 inch NPTF
• Weight: 0.14 pounds
• UPC: 098468100462

Standard Information

• Brand: ALEMITE
• Manufacturer Part Number: AL1820-1