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Power Tools Direct£0.98Visit shop Timco Light 4020Ppmhnp Machine Screws - Pz - Pan & Hex Nuts - Zinc M4 X 20 Timpac 32
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B&Q£5.08Visit shop B&Q - Machine Pan Head Screws & Hex Nut SilverM4 X 20
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The Timco Machine Pan Head Screw with Hex Full Nut is an essential hardware solution for professionals and DIY enthusiasts requiring reliable, light-duty fastening for assembly projects. Designed for superior clamping effectiveness, these M4 x 20 components offer a secure fit for steel substrates; however, because they feature a zinc and clear Cr3 coating, they are best suited for clean, dry, and low-humidity indoor environments to prevent oxidation.
| Colour | Silver |
|---|---|
| Model Part Number | PTDTIM4020PPMHNP |
| Brand | TIMCO |
No, they feature a zinc and clear Cr3 coating which is designed for indoor, dry environments.
A standard Pozi drive screwdriver is required. Ensure you use the matching size for the best fit.
They conform to DIN 934, DIN 267-4, and DIN 7985 standards.
These are machine screws with a metric thread, meaning they are primarily intended for steel substrates or pre-tapped holes, not raw wood.
The screw length is 20mm.
Ensure you are using the correct size Pozi driver bit and apply more manual downward pressure.
Check the thread for burrs or debris; verify that the nut and screw are perfectly aligned before attempting to tighten.
This indicates moisture exposure. If light, wipe clean; if extensive, replace the hardware as the protective coating has failed.
To ensure maximum holding power, confirm that your drill bit or tap matches the M4 metric thread diameter. When tightening, apply steady downward pressure to seat the Pozi bit firmly into the recess before rotating. Since these screws utilize a zinc and clear Cr3 finish, they are intended for dry interior use only. To maintain their integrity, keep the screws in their original packaging until use to prevent moisture accumulation. If you are working in a corrosive environment, consider using a stainless steel alternative instead of this zinc-coated variety.
