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Nickel-plated brass 90-degree male elbow with 13 mm hex

Legris

Legris 3699 08 10 5/16 in 90° Male Elbow 13 mm Hex

SKU CH-FP77-1NGNB MPN 3699

A nickel-plated brass 90° male elbow fitting for 5/16 in tube with 1/8 in BSPP thread, rated to 435 psi and -4 to 302 °F

  • TypeDrain Components
  • Nickel-plated brass resists corrosion for long service life
  • 90-degree male elbow routes tubing cleanly in tight spaces
  • 5/16 inch tube size fits standard pneumatic lines
  • 435 psi maximum pressure handles demanding air systems
  • 13 mm hex allows secure installation with common tools

5/16 in 90° Male Elbow

The Legris 3699 08 10 is a nickel-plated brass 90-degree male elbow designed for tube-to-BSPP connections. It suits fluid-handling systems that require a compact directional change in a 5/16 inch tube line. The fitting handles a maximum pressure of 435 psi and operates across a temperature range of -4 to 302 degrees Fahrenheit. Installers needing a corrosion-resistant elbow for general-purpose plumbing or pneumatic circuits will find it appropriate.

Installation and common issues

The fitting uses a 13 mm hex for tightening, allowing standard spanner access in confined spaces. Its BSPP thread requires a compatible female port and appropriate sealing method to prevent leaks. Over-tightening can damage the nickel-plated brass threads or distort the tube seal. Ensure the tube is cut square and fully inserted before final torque to avoid connection failure under pressure.

Sustained-load behaviour

Under continuous pressure up to 435 psi the nickel-plated brass body maintains structural integrity without creep. The material resists corrosion during prolonged exposure to moisture and typical hydraulic fluids. Operating continuously at the upper end of the 302 degrees Fahrenheit limit may accelerate stress relaxation in the threads, so periodic inspection is advisable. The elbow retains sealing performance through thermal cycles within the stated range.

Highlights

  • Nickel-plated brass resists corrosion for long service life
  • 90-degree male elbow routes tubing cleanly in tight spaces
  • 5/16 inch tube size fits standard pneumatic lines
  • 435 psi maximum pressure handles demanding air systems
  • 13 mm hex allows secure installation with common tools

Specifications

TypeDrain Components
BrandLegris
Model3699 08 10

Questions about this item

How can I confirm the 90° male elbow is sealing correctly after installation?

Pressurise the line up to 435 psi and check for leaks at the 5/16 in tube and 1/8 in BSPP threads; the nickel-plated brass body and 13 mm hex should show no weeping or distortion across the -4 °F to 302 °F range.

What comes with the Legris 3699 08 10 fitting and what must I supply?

The box contains the single nickel-plated brass 90° male elbow with 13 mm hex; you must provide 5/16 in tubing, 1/8 in BSPP mating thread, thread sealant or tape, and a 13 mm spanner for assembly.

Which Legris 3699 variant should I choose for a 5/16 in tube and 1/8 in BSPP port?

Select the 3699 08 10 model — it is the only version in this series built for 5/16 in tube size, 1/8 in pipe thread, 13 mm hex and 435 psi maximum pressure.

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