Parker KP81278 Hydraulic Hose Mpt Fitting 0.625 in Nptf

Product Description

The PARKER KP81278 is a straight male pipe thread (MPT) hydraulic hose end fitting machined from steel for use in hydraulic fluid conveyance systems. It features a 0.625-inch (5/8-inch) hose inside diameter, a 3/8-18 NPTF threaded connection, and an overall length of 2.61 inches. The NPTF thread form creates a pressure-tight mechanical seal without requiring a separate sealant, making it a common choice in mobile and industrial hydraulic plumbing. Hydraulic technicians and fluid power mechanics install this type of fitting when assembling or repairing hose assemblies on equipment requiring a reliable, leak-resistant connection point.

This fitting is designed for use in hydraulic hose assemblies across a range of industrial and mobile equipment applications. It is suited to systems running Parker hose lines where a straight MPT end connection is required at the hose-to-port junction. It is sold in packages of 4, making it practical for shop stock or multi-point repair jobs on a single machine or fleet. The straight geometry keeps routing simple in low-clearance installations.

Key Features

• 0.625-inch (5/8-inch) hose inside diameter for size 10 hose
• 3/8-18 NPTF threaded connection for pressure-tight seal
• Straight MPT fitting shape for direct inline hose-to-port connections
• Steel construction for durability in hydraulic service environments
• Overall length of 2.61 inches for compact installation
• Sold in a package quantity of 4

Compatibility

Compatible with Parker hose series 187 TC, 187 ST, 302, 304, 387 TC, 387 ST, 422, 424, 426, 436, 471TC, 471ST, 472TC, 482TC, 482ST, 487 TC, 487 ST, 722 TC, 722 ST, 787 TC, 787 ST, 797 TC, 797 ST, and 881 hoses.

Installation Notes

Installation should be performed by a qualified hydraulic technician or fluid power mechanic. Depressurize and drain the hydraulic system fully before disassembling any hose or fitting. NPTF threads rely on thread-form interference for sealing — inspect threads carefully before assembly and avoid cross-threading. Follow equipment manufacturer torque guidelines and applicable industry standards for hydraulic fitting assembly.