Question

a bolt identified as 3/8 - 16 x 1 1/2 has a _______.
3/8 inch shank size
length of 16mm
recommended 1 1/2 inch socket size
none of the above

Explanation:

In the bolt designation 3/8 - 16 x 1 1/2, the 3/8 represents the nominal diameter of the bolt (shank size). The 16 is the number of threads per inch and 1 1/2 is the length of the bolt.

Answer:

3/8 inch shank size