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COAST warranties its COAST knives, tools and COAST LED Flashlights/Headlamps to be free of defects in materials and workmanship for the life of the original purchaser. This warranty does not cover normal wear and tear, nor damage resulting from misuse or neglect. Warranty does not cover batteries and charging accessories (or damage caused by either). Batteries or damage caused by batteries (i.e. leakage) not included in the guarantee.

To begin the warranty process with your COAST product, please complete the Online Warranty Request Form.

With a fiberglass-filled nylon handle and a carefully crafted thumb perch, the BX312 Knife is designed for excellent grip control. With a simple to use back lock and then combine that with a 3-position pocket clip for convenient carrying and a thumb hole...

With a fiberglass-filled nylon handle and a carefully crafted thumb perch, the BX312 Knife is designed for excellent grip control. With a simple to use back lock and then combine that with a 3-position pocket clip for convenient carrying and a thumb hole for easy opening, and this knife is an excellent folder for everyday use.

With Coast’s commitment to quality, the BX312 Knife is backed by Coast’s lifetime warranty against defects in materials and workmanship.

  • Features
    • G10

      G10 is a specialized composite made from layers of fibrous material and resin compressed under extreme pressure. COAST G10 handles include an interior steel support for durability.

    • Lockback

      Easily control your knife blade. COAST knives featuring the Lockback system have an easy-to-use, integrated lock mechanism on the back of the knife that ensures the blade stays open during use. 

    • Three Position Knife Clip

      Carry your knife how it suits you best. Use COAST’s Three Position Knife Clip to adjust the pocket clip to how wear the knife, with easy access to your dominant hand.

    • Thumb Hole

      Easy opening for righties and lefties. COAST knives with a Thumb Hole—a small opening near the base of the blade—make one-handed opening quick and easy. The hole also reduces overall knife weight.

  • Specifications
    • Blade Length 3.25 in / 8.3 cm
    • Handle Material Nylon
    • Length Closed 4.1 in / 10.4 cm
    • Length Open 7.9 in / 20 cm
    • Weight 4.4 oz / 125 g
  • G10

    G10 is a specialized composite made from layers of fibrous material and resin compressed under extreme pressure. COAST G10 handles include an interior steel support for durability.

  • Lockback

    Easily control your knife blade. COAST knives featuring the Lockback system have an easy-to-use, integrated lock mechanism on the back of the knife that ensures the blade stays open during use. 

  • Three Position Knife Clip

    Carry your knife how it suits you best. Use COAST’s Three Position Knife Clip to adjust the pocket clip to how wear the knife, with easy access to your dominant hand.

  • Thumb Hole

    Easy opening for righties and lefties. COAST knives with a Thumb Hole—a small opening near the base of the blade—make one-handed opening quick and easy. The hole also reduces overall knife weight.

  • Blade Length 3.25 in / 8.3 cm
  • Handle Material Nylon
  • Length Closed 4.1 in / 10.4 cm
  • Length Open 7.9 in / 20 cm
  • Weight 4.4 oz / 125 g