Grip length is the non-threaded portion of the shank between the head and the first thread. Which option best matches this definition?

Grip length is the non-threaded portion of the shank between the head and the first thread. Which option best matches this definition?

• A. The non-threaded portion of the shank between the head and the first thread
• B. The threaded portion of the shank
• C. The head thickness
• D. The entire length of the bolt

Answer: (A)

Grip length is the smooth, unthreaded portion of the bolt shank between the underside of the head and the start of the first thread. This part is not engaged by threads, so it provides a clean, continuous bearing surface and helps the bolt clamp properly in the joint. The threaded portion is the part with the ridges that the nut or tapped hole threads onto, which is why it isn’t grip length. The head thickness describes how tall the head is, not the shank, and the entire length would include the head, grip length, and threaded portion.

Grip length is the smooth, unthreaded portion of the bolt shank between the underside of the head and the start of the first thread. This part is not engaged by threads, so it provides a clean, continuous bearing surface and helps the bolt clamp properly in the joint. The threaded portion is the part with the ridges that the nut or tapped hole threads onto, which is why it isn’t grip length. The head thickness describes how tall the head is, not the shank, and the entire length would include the head, grip length, and threaded portion.