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Power Tools Direct£2.71Visit shop Sealey Msp525 Machine Screw M5 X 25Mm Pan Head Pozi Zinc Pack Of 50
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This guide is for DIY enthusiasts and professionals who need reliable fasteners for various projects. The Sealey Machine Screw M5 x 20mm offers secure fastening with its zinc-plated finish and Pozi pan head, providing good corrosion resistance and easy tool engagement. A minor caveat is that the pack size of 100 may be excessive for very small, one-off tasks.
| Colour | Silver |
|---|---|
| Model Part Number | MSP520 |
| Brand | Sealey |
You will need a Pozi drive screwdriver, commonly referred to as PZ1 or PZ2.
The zinc plating offers good resistance to rust for general outdoor use, but for highly exposed or coastal environments, stainless steel or coated screws might be more durable long-term.
This M5 screw has a standard thread pitch of 0.8mm.
Yes, you can use them with a power drill equipped with the correct Pozi bit, but use a low speed and torque setting to avoid stripping the head or damaging the threads.
They are measured by their thread diameter (M5) and their length from under the head to the tip (20mm).
DIN 7985Z is a German standard (Deutsches Institut für Normung) that specifies the dimensions and tolerances for pan head Pozi screws, ensuring consistent manufacturing quality.
This specific product is a pack of 100. Sealey may offer other pack sizes or similar screws in different quantities; please check their product listings for alternatives.
Check that the hole is correctly tapped or that a nut is properly aligned. Ensure you are using the correct M5 thread size. Do not force the screw; this can damage the threads.
Ensure you are using the correct size Pozi bit (PZ1 or PZ2) and that it is fully seated in the screw head. Apply firm downward pressure while turning.
This is typically due to prolonged exposure to moisture or harsh chemicals. Clean the screw with a wire brush and apply a light coat of oil or a protective sealant if the screw is still functional.
Setup: To use these screws, ensure you have a compatible Pozi drive screwdriver (PZ1 or PZ2 typically, depending on torque requirements). Align the screw with the pre-drilled or tapped hole and turn clockwise to tighten. Use a nut if threading into a nutted application.
Compatibility: These M5 screws are designed to fit M5 nuts or M5 tapped holes. The 20mm length is measured from under the pan head to the tip of the screw. Ensure the combined thickness of the materials being joined is less than or equal to 20mm minus the depth of the receiving thread or nut.
Care: Store screws in their original resealable bag in a dry environment to prevent premature corrosion. Wipe clean with a dry cloth if dust accumulates. For extended storage in humid conditions, consider a small desiccant packet within the bag.
