MLB1/2CS Mega-Coupler 1/2 inch CS bolt Black

Light Source

18 in stock

Light Source

$34.43 $28.98
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MLB1/2CS Mega-Coupler 1/2 inch CS bolt Black

ALL BULBS will beat "ALL" competitors pricing! ….... Call 516.766.2266

MLB1/2CS Mega-Coupler 1/2 inch CS bolt Black Finish  

Use with UPM for horizontal hold.

Standard Mega-Coupler with a CS base. Countersunk to hold a 1/2" flat head socket bolt. Comes with a 1/2″ × 1-1/2" flat head socket bolt.

  • Minimum Size: 1/4" pipe, 1.66" OD truss tube
  • Maximum Size: 2" pipe, 2.050" OD truss tube
  • Safe Vertical Working Load: 1100 lbs
  • Hardware:
    • 1/2″ × 1.5″ flat head bolt
    • Nylock Nut
    • Belleville Washer
  • Weight: 1.1 lbs
  • This Mega-Coupler replaces the standard Hex Head bolt with a flat head countersunk bolt.
  • Available with a 1/2" flat head base or a 3/8" flat head base to fit a flat head bolt. An Allen wrench is required to adjust this bolt.

    Also available with an M12 flat head metric bolt (40mm length) to fit the Martin Mac 101 LED light or other European fixtures. Order codes for counter sunk couplers with metric bolts are MLB-M12CS and MLM-M12CS.

    You can also replace the standard Light Source wing nut with a steel wing nut.

    Download Spec Sheet (PDF)
    Minimum Size

    1 1/4" pipe, 1.66OD truss tube

    Maximum Size

    2" pipe, 2.050OD truss tube

    Safe Vertical Working Load

    1100 pounds


    1/2″ × 1.5″ flat head bolt or
    3/8″ × 1.5″ flat head bolt
    Nylock Nut
    Belleville Washer


    1.1 pounds

    Case Quantities


Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.


We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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