12Pack 3/8 in Hydraulic Hose Fittings 3/8 in JIC 37 Male - Heavy Duty

Our review of the 12Pack 3/8 in Hydraulic Hose Fittings finds them best suited for technicians and DIY mechanics who build or repair hydraulic lines and need a consistent, heavy duty crimped end. The single biggest reason to buy is reliability: these fittings are made from carbon steel and designed to crimp to standard 3/8 in I.D. hydraulic hose with a 3/8 in JIC 37 degree male end, which means they integrate with common petroleum and hydraulic power systems while working with Weatherhead U-Series and Dayco style crimpers.

Key Features

• Heavy Duty Construction: Carbon steel construction resists deformation under crimping and holds up in industrial hydraulic applications.
• Standard Compatibility: The 3/8 in JIC 37 male end matches common 3/8 in female JIC 37 degree fittings for leak-resistant connections.
• Crimp Ready: Dimensioned for crimping to 3/8 in I.D. hydraulic hose so installers can make custom lengths on site.
• Works with Common Crimpers: Compatible with Weatherhead U-Series and Dayco style adjustable crimpers, simplifying shop workflow.
• Consistent Dimensions: Inner and outer diameters are specified to help ensure a predictable fit when paired with matching hose and ferrules.

Who It's For

This pack is aimed at professional mechanics, fleet maintenance teams, and serious hobbyists who regularly assemble or repair hydraulic hose assemblies and require consistent, serviceable fittings. If you already use standard 3/8 in JIC 37 fittings in agricultural, construction, or industrial equipment, these will slot into your existing inventory without surprise fit issues.

Those who should look elsewhere are casual users who only need a single fitting for an emergency repair or anyone who does not have access to a compatible crimper; these fittings are intended for use as crimped ends and reach full usefulness when properly crimped and installed.

Pros & Cons

Pros

• Durable carbon steel construction provides long service life in demanding applications.
• Designed to crimp to 3/8 in I.D. hydraulic hose for secure, leak-resistant assemblies.
• Compatible with Weatherhead U-Series/Dayco and similar adjustable crimpers for ease of fitting installation.

Cons

• Requires a compatible crimper and some installation skill, so not ideal for one-off roadside fixes.

Specifications

Our Verdict

This 12 pack of 3/8 in JIC 37 male hydraulic hose fittings is a practical choice for shops and maintenance crews that need dependable, crimp-ready ends for petroleum and hydraulic power systems. Given the heavy duty material, standard dimensions, and compatibility with Weatherhead U-Series and Dayco style crimpers, it represents good value for anyone who assembles hoses regularly and wants repeatable performance.

Frequently Asked Questions

Will these fittings work with standard 3/8 in hydraulic hose?
Yes, they are sized to crimp to 3/8 in I.D. hydraulic hose and mate with 3/8 in JIC 37 female fittings.

Are they compatible with common crimping machines?
They are compatible with Weatherhead U-Series and Dayco style adjustable crimpers and similar crimping equipment.

What fluids are these fittings suitable for?
They are intended for hydraulic systems and petroleum-based fluids used in industrial and mobile hydraulic applications.