Tek Screw 5.5x38 Self Tap Self Drill Screw + 16mm Washer Pack of 100
£6.66
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Tek Screw 5.5x38 Self Tap Self Drill Screw + 16mm Washer Pack of 100
F222
£6.66
Free UK delivery on orders over £100
Usually dispatched within 1–2 working days
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How to measure?
Measure the Outside Diameter (OD)
Pipe insulation sizes refer to the outside diameter of the pipe — not the bore (internal diameter).
Wrap a tape measure around the pipe, divide by π (3.14) to get the OD. Or use calipers across the outside of the pipe directly.
Pipe insulation sizes refer to the outside diameter of the pipe — not the bore (internal diameter).
|←— OD —→|Wrap a tape measure around the pipe, divide by π (3.14) to get the OD. Or use calipers across the outside of the pipe directly.
High-quality self-drilling Tek Screw.
Save time on pre-drilling and lining up.
Tek Screw 5.5x38 Self Tap Self Drill Screw 16mm galvanised washer with bonded rubber layer for a weatherproof seal against the sheet. 5/16 hex drive. Use 5.5 x 38 for fixing sheets (up to 5.3mm) to heavy section purlins (up to 12.5mm).
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