Static field route #378

What do I do when wrong screw length damages liner/equipment/damper?

Tools, Fasteners, Hardware & Material Handlingyellow

Before fastening near liner, dampers, equipment cabinets, controls, or coils, verify screw length. The screw point is doing work where you cannot see it.

Open in Field Rescue Open category

Field checklist

Check what sits behind the metal before driving screws.
Compare screw length to duct wall, liner, damper blade path, and equipment cabinet depth.
Use the approved fastener type/length for the condition.
Stop if a screw may hit controls, coils, wiring, liner, or damper movement.

Ask foreman

This fastener is near liner/equipment/damper parts. What screw length do you want here so we don't hit anything behind the metal?

Do not

Do not use whatever screws are in your pouch near hidden moving or electrical parts.

Why it matters

A screw that looks normal from the outside can damage liner, wiring, coils, controls, or damper operation inside.

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