The lines shown on the head of bolt 2 indicate:
A)it is a SAE grade 3.
B)it is rarely used.
C)it is aircraft quality.
D)it is an SAE grade 5.

Name: The lines shown on the head of bolt 2 indicate: A)it is a SAE grade 3. B)it is rarely used. C)it is aircraft quality. D)it is an SAE grade 5.
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Question

The lines shown on the head of bolt 2 indicate: 
A)it is a SAE grade 3. 
B)it is rarely used. 
C)it is aircraft quality. 
D)it is an SAE grade 5.

Quizplus · Accepted Answer

The lines on the head of bolt 2 indicate that it is an SAE grade 5 bolt. The presence of these lines is a common identification method for SAE grade 5 bolts and is not indicative of aircraft quality or rarity.

The Lines Shown on the Head of Bolt 2 Indicate