Parker KP81366 Male Rigid Hydraulic Hose Fitting

Product Description

The PARKER KP81366 is a male rigid hydraulic hose fitting designed for high-pressure fluid transfer applications in industrial and mobile hydraulic systems. Built from steel with a straight shape and Male ORB (O-Ring Boss) shaft type, this fitting connects hydraulic hose assemblies to ports using a 1-1/16-12 threaded interface. It accommodates hoses with a 0.625 inch (5/8 inch) inside diameter and measures 2.8 inches in overall length. The threaded connection provides a reliable, leak-resistant seal when properly torqued against an O-ring seating surface. Hydraulic technicians and fluid power specialists install this fitting as part of hose assembly fabrication or field replacement work.

This fitting is suited for use in industrial machinery, construction equipment, agricultural equipment, and other mobile or stationary hydraulic systems where a rigid male ORB end connection is required. It is part of PARKER Series 43 and is compatible with a range of Parker hydraulic hoses. Typical applications include connecting pressure and return lines in systems that demand a straight-run, fixed-position end fitting at the hose-to-port interface.

Key Features

• Male ORB (O-Ring Boss) thread type provides a positive, leak-resistant seal at the port face
• 1-1/16-12 thread size for secure connection to standard ORB ports
• Straight shape for direct, in-line hose-to-port routing
• Steel construction for durability in high-pressure hydraulic service
• 0.625 inch (5/8 inch) hose inside diameter compatibility
• 2.8 inch overall length suits standard hose assembly configurations

Compatibility

Compatible with Parker hose series 187 TC, ST; 302; 304; 387 TC, ST; 422; 424; 426; 436; 471TC; 471ST; 472TC; 482TC; 482ST; 487 TC, ST; 722 TC, ST; 787 TC, ST; 797 TC, ST; and 881 hoses. Part of the Parker Series 43 fitting family for 5/8 inch hose ID applications.

Installation Notes

Installation is performed by qualified hydraulic technicians or fluid power specialists. Depressurize and fully isolate the hydraulic system before disassembling any fittings or hose assemblies. O-Ring Boss fittings require a properly seated and undamaged O-ring on the fitting to achieve a leak-free connection — inspect or replace the O-ring before installation. This product is subject to California Proposition 65 requirements; handle in accordance with applicable safety guidelines.