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Bolt Screw for Zambelli Downspout Brackets (Painted & Galvanized)


Exact replacement Bolt Screw for Zambelli Downspout Brackets

If you are ordering our painted or galvanized downspout brackets, do not order! This part is already included with your brackets!

Quantity Pricing Discount (%) Price
1 - 24 $5.36
25 - 49 6.16 % $5.03
50+ 12.69 % $4.68


This is the exact bolt screw we ship with all Zambelli painted & galvanized steel downspout brackets.

This bolt screw features one end with an M10 machine thread and will fit any bracket that uses an M10 thread. The other end is a coarse thread suitable for installation directly into wood (pre-drilling required). The Torx drive makes installation a breeze using any standard screw gun or impact driver (bit not included)


  • Overall length: 3-7/8″
  • M10 machine thread for insertion in brackets
  • Coarse lag bolt thread for installation in wood (pre-drilling required)
  • Torx drive (on machine thread end) makes installation fast and clean (driver bit not included)
  • Heavy zinc plating for corrosion resistance
  • Perfect fit for Zambelli painted and galvanized downspout brackets, will fit others with an M10 socket


Additional information

Weight 1.75 oz
Dimensions 4 × .375 × .375 in



Zambelli was started in 1957 by 2 brothers in Germany following the crafts of their ancestors. For more than 35 years the Zambelli name has stood for high-quality roof drainage systems. Because of that reputation, Zambelli is now the largest manufacturer of roof drainage systems in Europe, and their products are exported all over the world.