HWF T17 screws are hex washer face timber screws with a Type 17 cutting point. The T17 point cuts its own hole in timber, and the external hex head drives fast with a nut setter. They are used to fix roof and wall sheeting to timber battens and purlins, and for general timber fixing outdoors.
Linkworld supplies hex head T17 screws in 12g-11 and 14g-10, in Class 3 and Class 4 corrosion classes, with or without EPDM sealing washers. We pack in bulk cartons or in your own branded boxes, and other sizes can be made to your drawing or sample.
Hex Head T17 Screw Specifications
| Specification | Configuration |
|---|---|
| Product | Hex washer face Type 17 timber screw |
| Gauge / thread | 12g-11; 14g-10 |
| Common lengths | 12g-11: 25, 35, 40, 50 and 65 mm; 14g-10: 25, 39 and 50 mm |
| Drive | 8 mm external hex |
| Point | Type 17 (T17) cutting point |
| Material | Hardened carbon steel |
| Corrosion class | Class 3 or Class 4 |
| Washer | With or without EPDM sealing washer |
| Packing | Bulk cartons, own-brand boxes, buckets and small packs |
Other sizes and finishes can be made to drawing or sample.
Where Hex Head T17 Screws Are Used
- Roof sheeting to timber fixing metal roofing to timber battens and purlins
- Wall cladding fixing metal cladding to timber framing
- Sheds and outbuildings timber-framed farm and garden buildings
- Fencing and landscaping timber rails and outdoor structures
Choosing Class 3 or Class 4
In Australia, roofing and cladding screws are sold by corrosion class under AS 3566. Class 3 is the common choice for general outdoor and roofing work. Class 4 is used for more severe exposure, such as coastal and industrial sites. For a roof or wall system, the final choice should follow the roofing manufacturer’s fixing guide.
Choose screws with an EPDM sealing washer where the screw passes through roof or wall sheeting and needs to seal, and bare screws for timber-to-timber work.
Common Purchasing Mistakes
Ordering “T17 screws” without the head type. T17 is the point. State hex head, gauge, thread and length as well.
Writing “C3”. The correct name is Class 3. Write Class 3 or Class 4 on your orders and labels.
Leaving the washer out. Bare screws and screws with EPDM washers are different items.
Mixing classes under one code. Class 3 and Class 4 screws look alike in a carton. Give each its own code and label.
What to Send with Your Enquiry
| Item | What to tell us |
|---|---|
| Size | Gauge, thread and length, for example 12g-11 x 50 mm |
| Corrosion class | Class 3 or Class 4 |
| Washer | With or without EPDM sealing washer |
| Quantity | Quantity for each size |
| Packing | Bulk carton, own-brand box, bucket or small pack |
| Destination | Destination port |
Packing and Supply for Distributors
We pack hex head T17 screws in bulk cartons for trade distribution, or in your own branded boxes, buckets and small packs for retail. Each size can carry its own label. For customers who plan several deliveries through the year, we offer free warehouse storage and staged shipments.
Work With Linkworld
Linkworld has more than 20 years of fastener export experience and runs its own cold heading workshop. Our own QC team checks head form, point, thread and coating in our inspection room before every shipment. We also make screws to drawing or sample, so special lengths and packs are welcome.
Frequently Asked Questions
What are hex head T17 screws?
They are hex washer face timber screws with a Type 17 cutting point, used to fix roofing, cladding and outdoor timber.
What sizes of Type 17 hex head screws do you supply?
12g-11 and 14g-10 in the common Australian lengths. Other sizes can be made to drawing or sample.
Do you supply Class 3 roofing screws with EPDM washers?
Yes. Our hex head T17 screws are available with or without EPDM sealing washers.
Do you make Class 4 HWF screws?
Yes. We make both Class 3 and Class 4.
What does AS3566 mean for these screws?
AS 3566 is the Australian standard series for self-drilling screws used in building. Its corrosion classes, Class 1 to Class 4, are how roofing screws are graded in the Australian market.
Looking for hex head T17 screws in Class 3 or Class 4?
Send the sizes, class, washer option, quantity and packing you need through the enquiry form below, and our team will reply with the options that fit your range.
Send an Enquiry
Send a drawing, sample or clear reference photo. Add the quantity and application if available, and we can start from the information you already have.