Parker PT-00258 Brass Male Adapter 3/8 in 1/8-27 Nptf 37 Flare

Product Description

The PARKER PT-00258 is a brass flared tube male adapter designed for high-pressure hydraulic and fluid system connections. It features a 37-degree flare end on one side and a 1/8-27 NPTF male thread on the other, creating a leak-resistant metal-to-metal seal. With a maximum static working pressure of 6000 psi and a maximum dynamic working pressure of 3300 psi, this fitting handles demanding service conditions. The 3/8-inch tube OD and compact 1.24-inch overall length make it a practical inline transition fitting. Licensed plumbers, pipefitters, and hydraulic system technicians install this type of adapter in instrumentation, fluid power, and fuel line applications.

This adapter is used in residential and commercial fluid systems where a 37-degree flare tube must transition to a male NPTF pipe thread port. Typical applications include hydraulic manifolds, fuel delivery systems, compressed air lines, and instrumentation tubing. The NPTF thread form creates a pressure-tight joint through thread interference, reducing reliance on thread sealants in many installations. Sold in a package quantity of five units per package with a minimum order quantity of one.

Key Features

• 37-degree flare end meets SAE J514 and ISO 8434-2 standards for reliable tube-to-fitting sealing
• NPTF male thread provides a dry-seal connection at the port end
• 6000 psi maximum static working pressure suitable for high-pressure hydraulic service
• 3300 psi maximum dynamic working pressure rating
• Full brass construction resists corrosion in fuel, water, and air service
• Compact 1.24-inch overall length minimizes space requirements in tight installations

Compatibility

Designed as an OEM-style replacement or new-installation fitting for hydraulic, pneumatic, and fluid power systems requiring a 3/8-inch OD 37-degree flare tube connection transitioning to a 1/8-27 NPTF male port.

Installation Notes

Installation should be performed by a qualified pipefitter, plumber, or hydraulic technician in accordance with applicable SAE and NPTF assembly standards. Depressurize and isolate the fluid system completely before removing or installing any fittings. Inspect the flare seat and tube flare for nicks or deformation before assembly, as damage to either sealing surface will compromise the joint. Apply thread sealant only if required by the system design and compatible with the fluid media.