Alemite AL305859 Grease Fitting Adapter 1/8 Npt X 7/16-20

Product Description

The ALEMITE AL305859 is a grease fitting adapter designed to connect lubrication lines and grease guns to fittings with mismatched thread types. It transitions from a 1/8 NPT male thread on one end to a 7/16-20 thread on the other, allowing technicians to adapt standard grease zerks or couplers where direct thread compatibility is not available. This adapter is a common accessory in fleet maintenance, industrial equipment service, and general mechanical repair. Lubrication technicians and mechanics install it wherever a direct-fit grease nipple is not an option and an intermediate adapter is required to complete the lube circuit.

This adapter suits a wide range of applications in preventive maintenance programs across automotive, agricultural, construction, and industrial equipment. It is used when existing ports are tapped to 1/8 NPT and the grease delivery coupler or fitting requires a 7/16-20 connection. The AL305859 is sold and installed as a single unit, making it straightforward to stock and replace as needed during scheduled lubrication service intervals.

Key Features

• Adapts 1/8 NPT threads to 7/16-20 thread specification for grease line compatibility
• Compact, lightweight design at 0.03 pounds for easy handling and stocking
• Sold individually, allowing targeted replacement without purchasing a kit
• Compatible with standard grease gun couplers and zerk-style fittings in the 7/16-20 thread family

Compatibility

Designed as an OEM-style grease fitting adapter for equipment with 1/8 NPT-tapped lubrication ports requiring a 7/16-20 grease fitting interface.

Installation Notes

Installation is performed by lubrication technicians or mechanics as part of routine equipment service. Relieve system pressure and wipe the port area clean before threading in the adapter. Apply an appropriate thread sealant to the NPT end per standard practice, as NPT threads are not inherently pressure-tight without sealant. Do not overtighten, as this can crack the fitting body or damage the tapped port.

Technical Specifications

• Thread End 1: 1/8 NPT
• Thread End 2: 7/16-20
• Weight: 0.03 pounds
• Unit of Measure: Each
• UPC: 098468120651

Standard Information

• Brand: ALEMITE
• Manufacturer Part Number: AL305859