These hex head type 17 screws with seal are designed for self drilling into timber. They come in class 3 & 4 galvanised steel or grade 316 stainless steel and have a watertight neo washer. Features: Neoprene washer provides a watertight seal which is ideal for roofers applications Designed for drilling into timber – no need to drill a pilot hole Made from class 3 & 4 galvanised steel for outdoor use, or grade 316 stainless steel Hex head type 17 screws with seal – quick reference Code Size Specs Qty T17HEXC3N310020 10g-12tpi x 20mm gal – C3 1000 T17HEXC3N312030 12g-11tpi x 30mm gal – C3 1000 T17HEXC3N312035 12g-11tpi x 35mm gal – C3 1000 T17HEXC3N312050 12g-11tpi x 50mm gal – C3 1000 T17HEXC3N314065 14g-10tpi x 65mm gal – C3 500 T17HEXC3N412025 12g-11tpi x 25mm gal – C4 1000 T17HEXC3N412030 12g-11tpi x 30mm gal – C4 1000 T17HEXC3N412035 12g-11tpi x 35mm gal – C4 1000 T17HEXC3N412040 12g-11tpi x 40mm gal – C4 1000 T17HEXC3N412050 12g-11tpi x 50mm gal – C4 1000 T17HEXC3N412065 12g-11tpi x 65mm gal – C4 1000 T17HEXC3N414025 14g-10tpi x 25mm gal – C4 1000 T17HEXC3N414040 14g-10tpi x 40mm gal – C4 1000 T17HEXC3N414050 14g-10tpi x 50mm gal – C4 1000 T17HEXC3N414065 14g-10tpi x 65mm gal – C4 500 T17HEXC3N414075 14g-10tpi x 75mm gal – C4 500 T17HEXC3N414090 14g-10tpi x 90mm gal – C4 250 T17HEXC3N414100 14g-10tpi x 100mm gal – C4 250 T17HEXC3N414115 14g-10tpi x 115mm gal – C4 250 T17HEXC3N414125 14g-10tpi x 125mm gal – C4 250 T17HEXC3N414150 14g-10tpi x 150mm gal – C4 250 T17HEXC3N414175 14g-10tpi x 175mm gal – C4 250 T17HEXC3N414250 14g-10tpi x 250mm gal – C4 200 T17HEXC3N612025 12g-11tpi x 25mm SS 316 1000 T17HEXC3N612050 12g-11tpi x 50mm SS 316 200 T17HEXC3N614025 14g-10tpi x 25mm SS 316 1000 T17HEXC3N614050 14g-10tpi x 50mm SS 316 500 T17HEXC3N614075 14g-10tpi x 75mm SS 316 500 These screws are often called Type 17s or T17s.
These hex head type 17 screws with seal are designed for self drilling into timber. They come in class 3 & 4 galvanised steel or grade 316 stainless steel and have a watertight neo washer. Features: Neoprene washer provides a watertight seal which is ideal for roofers applications Designed for drilling into timber – no need to drill a pilot hole Made from class 3 & 4 galvanised steel for outdoor use, or grade 316 stainless steel Hex head type 17 screws with seal – quick reference Code Size Specs Qty T17HEXC3N310020 10g-12tpi x 20mm gal – C3 1000 T17HEXC3N312030 12g-11tpi x 30mm gal – C3 1000 T17HEXC3N312035 12g-11tpi x 35mm gal – C3 1000 T17HEXC3N312050 12g-11tpi x 50mm gal – C3 1000 T17HEXC3N314065 14g-10tpi x 65mm gal – C3 500 T17HEXC3N412025 12g-11tpi x 25mm gal – C4 1000 T17HEXC3N412030 12g-11tpi x 30mm gal – C4 1000 T17HEXC3N412035 12g-11tpi x 35mm gal – C4 1000 T17HEXC3N412040 12g-11tpi x 40mm gal – C4 1000 T17HEXC3N412050 12g-11tpi x 50mm gal – C4 1000 T17HEXC3N412065 12g-11tpi x 65mm gal – C4 1000 T17HEXC3N414025 14g-10tpi x 25mm gal – C4 1000 T17HEXC3N414040 14g-10tpi x 40mm gal – C4 1000 T17HEXC3N414050 14g-10tpi x 50mm gal – C4 1000 T17HEXC3N414065 14g-10tpi x 65mm gal – C4 500 T17HEXC3N414075 14g-10tpi x 75mm gal – C4 500 T17HEXC3N414090 14g-10tpi x 90mm gal – C4 250 T17HEXC3N414100 14g-10tpi x 100mm gal – C4 250 T17HEXC3N414115 14g-10tpi x 115mm gal – C4 250 T17HEXC3N414125 14g-10tpi x 125mm gal – C4 250 T17HEXC3N414150 14g-10tpi x 150mm gal – C4 250 T17HEXC3N414175 14g-10tpi x 175mm gal – C4 250 T17HEXC3N414250 14g-10tpi x 250mm gal – C4 200 T17HEXC3N612025 12g-11tpi x 25mm SS 316 1000 T17HEXC3N612050 12g-11tpi x 50mm SS 316 200 T17HEXC3N614025 14g-10tpi x 25mm SS 316 1000 T17HEXC3N614050 14g-10tpi x 50mm SS 316 500 T17HEXC3N614075 14g-10tpi x 75mm SS 316 500 These screws are often called Type 17s or T17s.
These hex head type 17 screws with seal are designed for self drilling into timber. They come in class 3 & 4 galvanised steel or grade 316 stainless steel and have a watertight neo washer. Features: Neoprene washer provides a watertight seal which is ideal for roofers applications Designed for drilling into timber – no need to drill a pilot hole Made from class 3 & 4 galvanised steel for outdoor use, or grade 316 stainless steel Hex head type 17 screws with seal – quick reference Code Size Specs Qty T17HEXC3N310020 10g-12tpi x 20mm gal – C3 1000 T17HEXC3N312030 12g-11tpi x 30mm gal – C3 1000 T17HEXC3N312035 12g-11tpi x 35mm gal – C3 1000 T17HEXC3N312050 12g-11tpi x 50mm gal – C3 1000 T17HEXC3N314065 14g-10tpi x 65mm gal – C3 500 T17HEXC3N412025 12g-11tpi x 25mm gal – C4 1000 T17HEXC3N412030 12g-11tpi x 30mm gal – C4 1000 T17HEXC3N412035 12g-11tpi x 35mm gal – C4 1000 T17HEXC3N412040 12g-11tpi x 40mm gal – C4 1000 T17HEXC3N412050 12g-11tpi x 50mm gal – C4 1000 T17HEXC3N412065 12g-11tpi x 65mm gal – C4 1000 T17HEXC3N414025 14g-10tpi x 25mm gal – C4 1000 T17HEXC3N414040 14g-10tpi x 40mm gal – C4 1000 T17HEXC3N414050 14g-10tpi x 50mm gal – C4 1000 T17HEXC3N414065 14g-10tpi x 65mm gal – C4 500 T17HEXC3N414075 14g-10tpi x 75mm gal – C4 500 T17HEXC3N414090 14g-10tpi x 90mm gal – C4 250 T17HEXC3N414100 14g-10tpi x 100mm gal – C4 250 T17HEXC3N414115 14g-10tpi x 115mm gal – C4 250 T17HEXC3N414125 14g-10tpi x 125mm gal – C4 250 T17HEXC3N414150 14g-10tpi x 150mm gal – C4 250 T17HEXC3N414175 14g-10tpi x 175mm gal – C4 250 T17HEXC3N414250 14g-10tpi x 250mm gal – C4 200 T17HEXC3N612025 12g-11tpi x 25mm SS 316 1000 T17HEXC3N612050 12g-11tpi x 50mm SS 316 200 T17HEXC3N614025 14g-10tpi x 25mm SS 316 1000 T17HEXC3N614050 14g-10tpi x 50mm SS 316 500 T17HEXC3N614075 14g-10tpi x 75mm SS 316 500 These screws are often called Type 17s or T17s.
These hex head type 17 screws with seal are designed for self drilling into timber. They come in class 3 & 4 galvanised steel or grade 316 stainless steel and have a watertight neo washer. Features: Neoprene washer provides a watertight seal which is ideal for roofers applications Designed for drilling into timber – no need to drill a pilot hole Made from class 3 & 4 galvanised steel for outdoor use, or grade 316 stainless steel Hex head type 17 screws with seal – quick reference Code Size Specs Qty T17HEXC3N310020 10g-12tpi x 20mm gal – C3 1000 T17HEXC3N312030 12g-11tpi x 30mm gal – C3 1000 T17HEXC3N312035 12g-11tpi x 35mm gal – C3 1000 T17HEXC3N312050 12g-11tpi x 50mm gal – C3 1000 T17HEXC3N314065 14g-10tpi x 65mm gal – C3 500 T17HEXC3N412025 12g-11tpi x 25mm gal – C4 1000 T17HEXC3N412030 12g-11tpi x 30mm gal – C4 1000 T17HEXC3N412035 12g-11tpi x 35mm gal – C4 1000 T17HEXC3N412040 12g-11tpi x 40mm gal – C4 1000 T17HEXC3N412050 12g-11tpi x 50mm gal – C4 1000 T17HEXC3N412065 12g-11tpi x 65mm gal – C4 1000 T17HEXC3N414025 14g-10tpi x 25mm gal – C4 1000 T17HEXC3N414040 14g-10tpi x 40mm gal – C4 1000 T17HEXC3N414050 14g-10tpi x 50mm gal – C4 1000 T17HEXC3N414065 14g-10tpi x 65mm gal – C4 500 T17HEXC3N414075 14g-10tpi x 75mm gal – C4 500 T17HEXC3N414090 14g-10tpi x 90mm gal – C4 250 T17HEXC3N414100 14g-10tpi x 100mm gal – C4 250 T17HEXC3N414115 14g-10tpi x 115mm gal – C4 250 T17HEXC3N414125 14g-10tpi x 125mm gal – C4 250 T17HEXC3N414150 14g-10tpi x 150mm gal – C4 250 T17HEXC3N414175 14g-10tpi x 175mm gal – C4 250 T17HEXC3N414250 14g-10tpi x 250mm gal – C4 200 T17HEXC3N612025 12g-11tpi x 25mm SS 316 1000 T17HEXC3N612050 12g-11tpi x 50mm SS 316 200 T17HEXC3N614025 14g-10tpi x 25mm SS 316 1000 T17HEXC3N614050 14g-10tpi x 50mm SS 316 500 T17HEXC3N614075 14g-10tpi x 75mm SS 316 500 These screws are often called Type 17s or T17s.
Last updated at 04/20/2026 14:38:24
12g (5.50mm) x 50mm Top Grip NEO Hex Flange Timber T17 Roofing Screw Galvanised
Free delivery between Wed – Fri
12g (5.50mm) X 50mm Neo Hex Flange Timber T17 Top Grip Roofing Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hobson Engineering
Delivery between Wed – Mon $27.50
Timber Type 17 Flanged Hex Head Class 4 XGRIP with Seal
Next-day delivery $20
Hobsons - #12-11 X 50 Class 4 As3566 + Scratchguard Type 17 Hex + Washer + Xgrip | Q665 (Pack Of 1000)
Delivery between 21–29 Apr $7.95
originally posted on boltandnut.com.au
This Company Makes Exellent Quality Nuts bolts Teks Screws I'm Glad To Have Found Them Very On To Time Very Quick Delivery To SA. 10/10✅
originally posted on boltandnut.com.au
Was great to find screws at 50mm in woodland grey (a colorbond colour). Dont think the 25mm supplied for me to attach aluminium balastrades into wooden posts were long enough.
originally posted on boltandnut.com.au
they are exactly what was ordered
| Size | 12g (5.50mm) |
| Thread type | Coarse |
| Drive Type | Hex |
| System of Measurement | Screw Gauge |
| NEO Sealing Washer | Yes |
12g (5.50mm) x 50mm Top Grip NEO Hex Flange Timber T17 Roofing Screw Galvanised
Free delivery between Wed – Fri
12g (5.50mm) X 50mm Neo Hex Flange Timber T17 Top Grip Roofing Screw
Free delivery
Affiliate Disclosure: We may receive a small commission for purchases made through this link at no extra cost to you. This helps support our site. Thank you!
Hobson Engineering
Delivery between Wed – Mon $27.50
Timber Type 17 Flanged Hex Head Class 4 XGRIP with Seal
Next-day delivery $20
Hobsons - #12-11 X 50 Class 4 As3566 + Scratchguard Type 17 Hex + Washer + Xgrip | Q665 (Pack Of 1000)
Delivery between 21–29 Apr $7.95
This Company Makes Exellent Quality Nuts bolts Teks Screws I'm Glad To Have Found Them Very On To Time Very Quick Delivery To SA. 10/10✅
Was great to find screws at 50mm in woodland grey (a colorbond colour). Dont think the 25mm supplied for me to attach aluminium balastrades into wooden posts were long enough.
they are exactly what was ordered
Great service again
Very happy I was able to find these longer 65mm colour-matched Roofing Screws. They did the job perfectly.
This Company Makes Exellent Quality Nuts bolts Teks Screws I'm Glad To Have Found Them Very On To Time Very Quick Delivery To SA. 10/10✅
Screws have a coating I can't scratch with a knife and WAY less paint comes off when using an impact to drive them than my local store roof screws (Buildex). Awesome quality! Not to mention the seals are painted too so a more seamless look when installed than others have with those black seals.
Good price and excellent serviceDelivery from Melbourne to Perth 5 days - Fantastic!
Pleased with the roofing screws and the delivery was very quick. Time is the only way to test the product but I'm confident they will be fine. Price was good compared to the big warehouse place.
Great service and PRODUCT super fast delivery as I ordered Friday afternoon a week out from Xmas and landed on the doorstep the following Thursday, that's Melbourne to Central QLD. Big tick to Direct Freight as well. The price was awesome pity it didnt include screwing them into the roof (:Totally recomend these folks.
| Size | 12g (5.50mm) |
| Thread type | Coarse |
| Drive Type | Hex |
| System of Measurement | Screw Gauge |
| NEO Sealing Washer | Yes |
