How to Install Stainless Steel Sink Clamps

Written by c.l. rease
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When you are installing a stainless steel sink, you use sink clamps to pull the sink flange tight to the surface of the countertop. Sink clamps are a two-part clamp that inserts into a channel tack welded to the lower surface of the flange that surrounds the stainless steel sink. The head of the clamp rests inside of the channel and the second part of the clamp is a clip that grabs the underside of the countertop.

Skill level:
Moderately Easy

Things you need

  • Sink manufacturer's installation instructions
  • Safety glasses
  • Long necked regular screwdriver

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  1. 1

    Read the sink manufacturer's installation instructions to determine the proper spacing for the sink clamps.

  2. 2

    Turn the head of the each sink clamp to fully extend each clamp.

  3. 3

    Place the tapered head of one sink clamp into the mounting channel located under the sink and hand tighten the screw to hold the sink clamp in place. Repeat the process with each sink clamp, keeping the spacing between the sink clamps specified by the manufacturer.

  4. 4

    Put on your safety glasses and lie on your back inside of the sink cabinet.

  5. 5

    Place the tip of the screwdriver into the slot located on the bottom of one of the sink clamps and turn the screw clockwise to lock the sink clamp to the countertop.

  6. 6

    Repeat the process until all the sink clamps are tightly secured to the countertop.

  7. 7

    Inspect the area where the stainless steel sink meets the top of the countertop to ensure that the flange is pulled down tight. If you notice any area of the stainless steel sink flange that is above the countertop, tighten the sink clamp in that area to pull the flange tighter to the countertop.

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