Macsim 12g x 65mm Self Drilling Roofing Screws, Neo Washer, 50 Pack
Macsim 12g x 65mm Self Drilling Roofing Screws, Neo Washer, 50 Pack
Low stock: 3 left
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Long hex head self drilling screws with a sealing washer, for fixing roof sheeting or cladding through to steel purlins where a short screw won't reach.
Macsim's 23GEDN range has an extended drill point, so it drills its own hole through thicker steel with no pilot hole, and the neoprene washer under the hex washer face head squashes onto the sheet and seals the fixing against rain. They're Class 4 coated for outdoor work. Drive them with a hex socket on a drill and stop as soon as the washer is snug, because overdriving splits the seal.
There are 50 in the blister pack. Full specs are in the tabs below, and if you're not sure which length suits your sheet profile, call us on (08) 8536 4333 or come in and chat with us at 34-52 Milnes Rd, Strathalbyn.

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The details
- Brand: Macsim
- Size: 12g x 65mm
- Head: Hex washer face
- Drive: Hex socket
- Point: Extended drill point
- Drilling capacity: Not specified for this length
- Washer: Neoprene
- Finish: Class 4
- Use: Roof sheeting and cladding to steel purlins
- Pack: 50
Shipping and Returns
We pack and send your order with care, right here from our Strathalbyn store. Most parcels leave within 1-2 business days, and you'll get tracking as soon as it's on the way. If you're local, you can choose click-and-collect or our delivery service at checkout.
If something arrives damaged or not quite right, let us know within 14 days and we'll sort it quickly. You can return unused items in their original condition for a refund or store credit. For safety reasons, we can't accept returns on gas bottles, cut materials, or custom orders.
We're here to make things easy, so if you ever have a question about your delivery or a return, our team is only a call away.
Why you'll love shopping with us
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Built to handle our weather
Colorbond and steel chosen to stand up to local heat, wind and rain.
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Everything for the whole job
Panels, posts, cement and fixings in one place so you're not chasing bits.
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Help to get it right
We'll talk through sizes and what you'll need before you commit.