Parker PT-00052 Flareless Bite-type Tube Nut 3/16 in Steel

Product Description

The PARKER PT-00052 is a flareless bite-type tube nut designed to secure tubing in bite-type (also called instrumentation-style) compression fittings without requiring a flared tube end. Machined from steel, this nut threads onto the fitting body at a 3/8-24 UN UNF thread and draws the ferrule into the tube OD to create a leak-resistant mechanical grip. It accepts 3/16-inch tube OD and measures 0.61 inches overall length with a 0.44-inch hex. Licensed plumbers, pipefitters, and instrumentation technicians use this hardware in hydraulic, pneumatic, and fluid-control line assemblies where a clean, reliable bite-type connection is required.

This tube nut is suited for use in industrial and commercial plumbing, hydraulic control lines, and instrumentation tubing systems. Its flareless design makes it practical in tight installations where flaring tools cannot be used or where pre-assembled tubing runs are being modified or repaired. The 3/8-24 UN UNF thread pitch is standard across a wide range of bite-type fitting bodies, making this nut a common replacement or repair component on both new construction and retrofit jobs. It is sold in a package quantity of five.

Key Features

• Flareless bite-type design — no tube flaring required before assembly
• 3/8-24 UN UNF thread for compatibility with standard bite-type fitting bodies
• Accepts 3/16-inch tube OD
• Steel construction for durability in hydraulic and pneumatic applications
• 0.44-inch hex size for standard wrench engagement
• 0.61-inch overall length for compact installation in tight spaces

Compatibility

Designed as an OEM-style replacement or service component for flareless bite-type fitting assemblies accepting 3/16-inch tube OD with a 3/8-24 UN UNF threaded nut.

Installation Notes

Installation is typically performed by licensed pipefitters, plumbers, or instrumentation technicians. Shut off and depressurize the fluid or gas line completely before disassembling any fitting. Hand-tighten the nut onto the fitting body first, then advance with an open-end or box wrench per the fitting manufacturer's assembly procedure — do not overtighten, as excessive torque can damage the ferrule or tube wall. Follow applicable codes including ASME B31.1 or B31.3 for pressure piping systems as required by the installation type.