What wrench size is required to tighten a nut on a 7/8-inch heavy hex head bolt in a flange?

Prepare for the NCCR Boilermaker Test. Includes flashcards and multiple-choice questions with hints and detailed explanations to ensure your success. Gear up for your examination!

Multiple Choice

What wrench size is required to tighten a nut on a 7/8-inch heavy hex head bolt in a flange?

Explanation:
Wrench size is determined by the distance across the flats of the hex head, not the bolt’s threaded diameter. For a 7/8-inch heavy hex head bolt, the standard across-flats size that fits the head is 1 7/16 inches. This size provides a snug, secure grip on the hex corners to apply torque without slippage or rounding. The other options would be either too small or not aligned with the standard head dimensions for this bolt diameter, so they don’t fit properly.

Wrench size is determined by the distance across the flats of the hex head, not the bolt’s threaded diameter. For a 7/8-inch heavy hex head bolt, the standard across-flats size that fits the head is 1 7/16 inches. This size provides a snug, secure grip on the hex corners to apply torque without slippage or rounding. The other options would be either too small or not aligned with the standard head dimensions for this bolt diameter, so they don’t fit properly.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy