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Author Question: List the common screw head designs. What will be an ideal ... (Read 37 times)

maegan_martin

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List the common screw head designs.
 
  What will be an ideal response?

Question 2

What standard covers flexible duct and methods of connecting and sealing flexible duct?
 
  What will be an ideal response?



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Pamela.irrgang@yahoo.com

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Answer to Question 1

Hex, round, pan, and flat

Answer to Question 2

Underwriters Laboratories 181 B




maegan_martin

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Reply 2 on: Jul 26, 2018
:D TYSM


helenmarkerine

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Reply 3 on: Yesterday
Wow, this really help

 

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