Safety Wire and Cotter Pins

Question 1

What are the two methods of installing cotter pins and which is preferred?

Answer 1

Standard- preferred and Wrap Around

Question 2

What kind of cotter pins will not be used in applications that bring them in contact with fuel due to contamination hazard?

Answer 2

Cadmium plated

Question 3

Ensure that no more than __ percent of the diameter of the cotter pin head is above the nut’s castellation?

Answer 3

50%

Question 4

What are the two typed of break-away wire and their sizes/materials?

Answer 4

Shear wire- .020 copper, seal wire-.031 aluminum

Question 5

What is the maximum length of safety wire for safetying a series of bolts?

Answer 5

24in

Question 6

The pigtail shall be __in to __ inches long and have at least __ twists.

Answer 6

1/2-5/8 with 6 twists

Question 7

For double strand safety wire: how many twists per inch when using .020?

Answer 7

9-12

Question 8

For double strand safety wire: how many twists per inch when using .032 and .040?

Answer 8

7-12