Fasteners
Finish the job with the right fasteners supplied by Stratco. Choose from screws to fix timber or steel, with or without seals, for crest or pan fixing. Stratco can supply wafer head screws, batten fixing Screws, ripple self-drilling and tapping screws, rivets, bolts, coach screws, masonry anchors and polycarbonate fasteners, all in varying sizes for each job
Types
Fastener Selection
Note: Please Check your state for fastener availability.
The fastener sizes are suitable for fixing over an insulation blanket up to 55mm thick. For thicknesses up to 100mm, the next standard screw length to that indicated is to be used.
Non-Cyclonic
Classes:
Protective coatings applied to fasteners provide various levels of protection. The Australian Standard for fastener performance (AS3566) currently lists three classes of corrosion coatings with a proposed fourth.
** Class 3: For general external use in mild and moderate industrial and mild marine applications. Stratco strongly recommends that Class 4 fasteners be used in moderate marine applications. Class 3 is intended for roofing and cladding fasteners in standard applications.
^ Class 4: For external use in moderate and severe marine environments, classified in accordance with ISO 9223 as generally between 100m from the beach front to approximately 300m inland. In high winds this may extend further inland. Fasteners conforming to Class 4 should be used with Ultra steel and XRW steel (when used 200-400m from marine environments).
| Fastening To Steel |
| | Self Drilling and Tapping Screws |
| CREST FIXING | PAN FIXING | Ripple Head without Neo Washer* | Stitching Screws
(for stitching metal sheets) |
Class 3**
Hex Head With Neo Washer | Class 4^
Hex Head With Neo Washer | Hex Head with Neo Washer Hex | Hex Head without Neo Washer* | Wafer Head without Neo Washer* |
12
x
35 (mm) | 15
x
45 (mm) | 12
x
68 (mm) | 12
x
75 (mm) | 12
x
35 (mm) | 12
x
45 (mm) | 12
x
68 (mm) | 10
x
16 (mm) | 14
x
25 (mm) | 10
x
16 (mm) | 10
x
25 (mm) | 12
x
20 (mm) | 10
x
16 (mm) | 10
x
20 (mm) | 8
x
12 (mm) | 8
x
15 (mm) |
| Roofing Profile | CGI Corrugated |  | | | | | | | | | | | | | | | |
| Superdek | | | | | | | | | | | | | | | | |
| Prodek | | | | | | | | | | | | | | | | |
| Smartspan | | | | | | | | | | | | | | | | |
| Topdek 700 | | | | | | | | | | | | | | | | |
| Spacedek | | | | | | | | | | | | | | | | |
| Walling Profile | CGI Mini | | | | | | | | | | | | | | | | |
| Maxiclad | | | | | | | | | | | | | | | | |
| Maxirib | | | | | | | | | | | | | | | | |
| Stratclad | | | | | | | | | | | | | | | | |
| Fixing Battens to Roof Framing | 0.55mm Steel Roof Battens | | | | | | | | | | | | | | | | |
| 0.42mm Steel Ceiling Battens | | | | | | | | | | | | | | | | |
| Miscellaneous Products | Fence Panels | | | | | | | | | | | | | | | | |
| Tuffloor (fixing caps to posts) | | | | | | | | | | | | | | | | |
| Fascia Brackets | | | | | | | | | | | | | | | | |
* Does not provide waterproofing
| Fastening To Timber |
| | Type 17 Screws | Self Drilling and Tapping Screws |
| CREST FIXING | PAN FIXING | Hex Head without Neo Washer* | Ripple Head without Neo Washer* | Bugle Head Screws | Needle Point Screws |
Class 3**
Hex Head With Neo Washer | Class 4^
Hex Head With Neo Washer | Hex Head with Neo Washer |
12
x
50 (mm) | 14
x
50 (mm) | 12
x
65 (mm) | 14
x
65 (mm) | 12
x
50 (mm) | 12
x
65 (mm) | 14
x
90 (mm) | 10
x
25 (mm) | 12
x
25 (mm) | 14
x
25 (mm) | 10
x
25 (mm) | 10
x
30 (mm) | 12
x
25 (mm) | 12
x
40 (mm) | 10
x
30 (mm) | 6
x
25 (mm) | 7
x
25 (mm) |
| Roofing Profile | CGI Corrugated | | | | | | | | | | | | | | | | | |
| Superdek | | | | | | | | | | | | | | | | | |
| Prodek | | | | | | | | | | | | | | | | | |
| Smartspan | | | | | | | | | | | | | | | | | |
| Topdek 700 | | | | | | | | | | | | | | | | | |
| Spacedek | | | | | | | | | | | | | | | | | |
| Walling Profile | CGI Mini | | | | | | | | | | | | | | | | | |
| Maxiclad | | | | | | | | | | | | | | | | | |
| Maxirib | | | | | | | | | | | | | | | | | |
| Stratclad | | | | | | | | | | | | | | | | | |
| Fixing Battens to Roof Framing | 0.55mm Steel Roof Battens | | | | | | | | | | | | | | | | | |
| 0.42mm Steel Ceiling Battens | | | | | | | | | | | | | | | | | |
| Misc Products | Fence Panels | | | | | | | | | | | | | | | | | |
| Tuffloor (fixing caps to posts) | | | | | | | | | | | | | | | | | |
| Fascia Brackets | | | | | | | | | | | | | | | | | |
* Does not provide waterproofing
Cyclonic
* Does not provide waterproofing
* Does not provide waterproofing
Screws, Bolts and Nails
| Length Conversions |
| Imperial | Metric (mm) | Imperial | Metric (mm) |
| 1/2" | 12 | 2" | 50 |
| 5/8" | 16 | 2 1/2" | 65 |
| 3/4" | 20 | 3" | 75 |
| 1" | 25 | 4" | 100 |
| 1 1/4" | 30 | 5" | 125 |
| 1 1/2" | 40 | 6" | 150 |
Screw Fastener code
| The format of the number code is: |
| |
12 | - | 14 | x | 45 |
Screw gauge
(Thread outside diameter) | | Thread Pitch
(Threads per inch) | | Overall length of the screw measured
from under the head (mm) |
Typical Hex Head
Top threaded section
Extrudes sheeting towards the seal to maximise waterproofness. Grips the sheeting for a secure connection. Stops sheeting from moving when walked on.
Dwell section
Prevents the sheeting from riding up during fixing and minimises distortion of the profile.
Shank hole enlarger
Enlarges the hole in the sheeting to minimise damage to the protective coating on the screw.
Flue Caps
Flue Caps can prevent birds, water and smoky smells from entering the building through the flue. Smoky smells are prevented by keeping rain from coming down the flue and mixing with the creosote inside the chimney. Galvanised, zinc/alum and a full range of roofing colours are available.
Dimensions
| | Standard Sizes |
 | Type | Diameter
(mm) | Length
(mm) |
| Flue Caps | 150 | N/A |
| 200 | N/A |
| 225 | N/A |
| 300 | N/A |
 | Casing Only | 150 | 600 |
| 150 | 900 |
| 150 | 1200 |
| 150 | 1800 |
Cap Lengths
with Cap | 150* | 450* |
| 150 | 600 |
| 150* | 600* |
| 150 | 900 |
| 150 | 1200 |
 | Flume Adaptor
(Spun) | 150 | N/A |
| 200 | N/A |
| 225 | N/A |
| 300 | N/A |
| * With base, nom. pitch. |
Louvres
Louvre Vents
For improved ventilation, add the finishing touch with Louvred Gable Vents from Stratco. Three classic designs of circular, half round and triangular are available in a range of sizes and colours. If a specific depth is required this can be nominated at the time of ordering. Check with your State for availability. For the Queensland and Northern Territory markets.
Dimensions
 | Standard Sizes |
| Type | Length
(mm) | Height
(mm) |
| Circular | 300 dia | N/A |
| 380 dia | N/A |
| 450 dia | N/A |
| 600 dia | N/A |
| Half Round | 450 | 225 |
| 600 | 300 |
| 900 | 450 |
| 1200 | 600 |
| Triangle | 450 | 225 |
| 600 | 300 |
| 900 | 450 |
| 1200 | 600 |
| 1500 | 750 |
| 1800 | 900 |
| Square | 600 | 600 |
| Rectangular | 1500 | 500 |
Note: Standard depth is 50mm. If a specific depth is required, please nominate this at time of ordering. Other sizes available. Insect screen is available on request. |
Stratflo Louvres
Stratflo louvres provide a secure, visually appealing solution to the challenge of increasing building ventilation, particularly in hot and humid climates. The louvres are designed to resist the intrusion of wind driven rain, and can be constructed with insect screening if required. Louvres fitted with a second stage vent provide extra security and weather protection for cyclonic conditions. Stratflo louvres are approved by the Darwin Building board.
Standard Stratflo Louvres
Method Of Order
Ridge
Two styles of ridge capping are offered in 0.40mm and 0.55mm base metal thicknesses. Roll type ridge is a traditional style of ridge cap commonly found on corrugated steel roofs. In some States, a stiffening rib is formed into the skirt of the ridge to add strength and assist with placing the screws. Alternatively, a simple 3 Bend Ridge Cap can be pressed to your exact requirements.
Dimensions
Valley Gutter
Stratco manufacture a standard Valley Gutter in galvanised, zinc/alum or a full range of roofing colours, to a length that will suit your requirements. Stratco Valley Gutter is available in 355mm or 400mm girth in 0.40mm and 0.55mm base metal thicknesses. A tile valley gutter is available in the eastern states only with a girth of 450mm, in 0.40mm base metal thickness.
Dimensions
Ventridge
Standard Ventridge
Ventridge provides continuous natural ventilation with effective weather protection under normal weather conditions. It is designed to effectively remove heat, smoke and fumes on an ongoing basis from factories and industrial buildings. It also blends in with a range of building styles due to its low profile.
Dimensions
| Dimensions (mm) |
A
Throat Size | B | C | D | E | F | G |
| Deck | CGI |
| 150 | 135 | 155 | 65 | 86 | 50 | 175 | 130° |
| 200 | 152 | 172 | 77 | 135 | 85 | 250 | 140° |
| 300 | 250 | 270 | 140 | 169 | 125 | 330 | 150° |
| 400 | 310 | 330 | 212 | 221 | 188 | 436 | 150° |
| 500 | 400 | 420 | 260 | 270 | 213 | 538 | 150° |
| 600 | 380 | 400 | 290 | 358 | 265 | 682 | 150° |
Note: Deemed to comply drawing number M/609/4. Darwin Building Board approved. |
Stratflo Ventridge
Stratflo Ventridge provides continuous natural ventilation with effective weather protection under normal weather conditions. It takes maximum advantage of natural stack action, which is a result of temperature differences between the inside and outside of the factory causing pressure variations resulting in air movement. Heat from plant, personnel, and also solar heat radiating through the roof and walls, warm the inside air which rises and flows out of the building through the ventridge.
Engineering
The strength of the Stratflo Ventridge has been designed and tested in accordance with the appropriate Australian Standards.
Adaptability Ventridge can be fitted to almost any part of the roof, providing the roof supports are installed at the recommended spacings (refer diagram below). The clear spacing ‘A’ between top purlins must be the ventridge throat width with a tolerance of -0mm to +40mm. Eg, for a 380mm throat ventridge the clear space must be between 380mm and 420mm.
Installation | Material Specifications |
| Component | Base Metal
Thickness (mm) | Mass/Unit Length of
Ridge Ventilators (kg/m) |
| Brackets | 2.0 | G300 Z275 |
| 3.0 | G300 Z275 |
Stack Cap, Stack,
Flashing and Shroud | 0.55 | G300 Z275 |
Dimensions
| Dimensions |
Throat (mm)
A | Height (mm)
B | Width (mm)
C | Mass/Unit Length of
Ridge Ventilators (kg/m) |
| 150 | 230 | 390 | 8 |
| 225 | 325 | 575 | 12 |
| 300 | 425 | 760 | 16 |
| 380 | 520 | 960 | 18 |
| 450 | 605 | 1130 | 25 |
| 600 | 810 | 1510 | 31 |
| 750 | 1010 | 1885 | 52 |
| 900 | 1210 | 2260 | 62 |
| Optimum length is 4600mm and maximum recommended length is 7600mm. |
