How to Assemble a Stainless Braided Hose

Braided stainless hoses are popular for carrying fluids in high-performance automotive applications. A stainless hose assembly consists of a length of braided stainless hose, with a hose end attached at each end. Hose ends consist of a socket, which slips over the end of the stainless hose, and a nipple, which threads into the socket. Stainless hose and hose ends are commonly available in sizes --3 to --20, with the number signifying the approximate inside diameter of the hose, in sixteenths of an inch. For instance, a --10 hose would have an approximate inside diameter of 10/16, or 5/8 inch. Hoses and hose ends must be of equal diameter.

Things You'll Need

  • Measuring tape
  • Stainless hose
  • Masking tape or duct tape
  • Fine-tipped permanent marker
  • Hacksaw with fine-toothed blade
  • Vise
  • Open-end wrenches
  • Motor oil or assembly lube
  • Grinder or shears (optional)
  • Vise inserts (optional)
  • Work gloves
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Instructions

    • 1

      Measure and cut the hose to length. Tightly wrap the hose with masking tape or duct tape before cutting; this keeps the stainless braid from fraying. Cut the hose using the hacksaw.

    • 2

      Insert the hose into the socket. Clamp the socket in the vise, and push the hose fully into the socket, using a twisting motion. When the hose is fully inserted into the socket, make a mark where the hose meets the socket, using the fine-tipped marker.

    • 3

      Thread the nipple into the socket. Thoroughly lubricate the threads of both the nipple and socket, as well as the inside of the hose, using motor oil or assembly lube. Thread the nipple fully into the socket, taking care that the socket remains fully seated on the hose (watch the mark made in the previous step). Tighten the nipple with an open-end wrench, within 1/16 inch of the socket.