Technician A says that if a bolt has a grade of 4.6 marked on its head, it is an SAE bolt with a 4.6 thread pitch. Technician B says that an SAE grade 2 bolt will have no slash markings on it. Who is correct?
A) A only
B) B only
C) Both A and B
D) Neither A nor B

Question

Quizplus · Accepted Answer

Technician B is correct. An SAE grade 2 bolt typically has no slash markings on its head. Technician A is incorrect because a bolt marked with 4.6 is a metric bolt, not an SAE bolt, and the numbers refer to its strength, not thread pitch.

Technician a Says That If a Bolt Has a Grade