as shown in the illustration, what do the numbers on the bolt heads indicate?\na pitch\nb length\nc…
as shown in the illustration, what do the numbers on the bolt heads indicate?\na pitch\nb length\nc strength\nd diameter
Answer
Brief Explanations:
The numbers on bolt heads are a grade - marking system that indicates the strength properties of the bolts, such as tensile strength. They do not represent pitch, length, or diameter.
Answer:
C. strength