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Author Question: What type of head is the most common for screws used on unit covers? A) Hex head B) Allen head C) ... (Read 55 times)

123654777

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on: Jul 24, 2018
What type of head is the most common for screws used on unit covers?
 
  A) Hex head B) Allen head C) Square head D) Round head

Question 2

What is the difference between the way a self-threading and a self-drilling sheet metal screw is used?
 
  A) Self-threading screws must have a pilot hole.
  B) Self-threading can only be installed with a counterclockwise rotation.
  C) Self-drilling can only be installed with a counterclockwise rotation.
  D) Self-drilling screws must have a pilot hole.


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ryhom

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Reply #1 on: Jul 24, 2018
Answer to Question 1

A

Answer to Question 2

A


123654777

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Reply 2 on: Jul 24, 2018
YES! Correct, THANKS for helping me on my review

mochi09

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Reply 3 on: Yesterday
Excellent

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