How to Measure & Select Fittings FAQ
How do I measure a hydraulic fitting?
Measure the thread outside or inside diameter, the thread pitch, and the seat or flare type, then match those to a thread chart. Calipers and a thread gauge give accurate results.
How do I identify what fitting I need?
Identify the thread type, size, sealing style, and gender of the port you're connecting to, then select a matching fitting. A thread chart or cross-reference tool makes this easier.
How do I know what size adapter to buy?
Determine the thread size and type on both components you're joining, then choose an adapter that matches each end. Measuring diameter and pitch with calipers prevents mismatches.
What is a thread chart used for?
A thread chart helps you identify and match fitting thread types and sizes by comparing diameter, pitch, and thread standard. It's an essential tool for selecting the correct fitting or adapter.
How do I match a fitting to my hose?
Match a fitting to your hose by confirming the hose size, end connection type, and pressure rating, then choosing a compatible hose end fitting. The STAMPED method helps ensure a correct match.
What is a cam lock coupling?
A cam lock coupling, also called cam and groove, is a quick-connect fitting that joins hoses and pipes using levered cams for fast, secure fluid transfer. They're popular where frequent connection and disconnection is needed.
How do cam and groove couplings work?
Cam and groove couplings connect by inserting a grooved adapter into a coupler and closing the cam arms, which lock the two together for a secure seal. They allow quick, tool-free connection and disconnection.
What is the difference between flared and flareless tube fittings?
Flared fittings seal by flaring the tube end to a 37-degree cone, while flareless fittings use a ferrule that bites into the tube. Each suits different pressures and assembly preferences.
Should I choose flared or flareless connections?
Choose flared connections for proven high-pressure sealing and legacy compatibility, and flareless for faster assembly without flaring tools. The right choice depends on pressure, tubing, and preference.
What tools do I need to install hydraulic fittings?
Basic hydraulic fitting installation typically needs wrenches, a torque wrench, thread identification tools like calipers and a thread gauge, and anti-seize for stainless. Proper torque tools help prevent leaks.
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