Which practice helps ensure proper alignment when starting fasteners?

• A. Slip the fastener in and tighten with a power tool
• B. Start by hand to align threads, then tighten with torque
• C. Lubricate with oil then use power tool
• D. Apply thread sealing compound to all threads

Answer: (B)

Starting fasteners by hand to align the threads lets you feel when the bolt or screw is entering straight and true. This hands-on check ensures the threads mesh properly, avoids cross-threading, and confirms the fastener isn’t binding as you begin to engage it. Once you’re sure the alignment is correct, finishing with a torque-controlled tighten brings the fastener to the right preload and clamp force, protecting threads from damage and preventing under- or over-tightening.

Driving in with a power tool right away can push misaligned threads, risking cross-threading and damaged threads that aren’t obvious until later. Lubricating the threads and then using a power tool can mask misalignment by reducing friction, making it harder to sense correct alignment and giving unreliable torque readings. Applying thread sealing compound to all threads doesn’t help alignment and can alter engagement length and torque requirements, potentially affecting the joint rather than improving it.