Fasteners
The KwikSeal® MB™ WoodBinder® fastener is designed to attach steel roofing & siding used in post-frame & residential metal roofing applications.
The Threads transition from fine to coarse to generate superior holding strength in various wood substrates.
Micro-Bit™ point reduces metal shavings that can embed themselves in the rubber washer.
EPDM rubber is vulcanized to a steel washer to form an excellent seal even when driven at an angle.
Allsteel, Inc. stocks MTW Screws in lengths:
- 3/4"
- 1"
- 1.5"
- 2"
- Other lengths available upon special order
The MTW screws are $16.50/bag.
ST Clip Screws, #10 Pancake Type 17, are designed to attach standing seam roof clips to plywood, OSB, or wood purlins.
Low profile head design provides excellent pullover strength.
Thin Wafer Head is designed for standing seam panels that utilize no clip but require a very thin head so as not to dimple the roof panel.
#12 Diameter 5/16” Cupped HWH self-drilling fastener easily penetrates steel up to .210” thick with no “point walking.” 1/4” Stitch will securely fasten panel side laps up to 18 ga. panel thickness with no strip-out when installed correctly.
Allsteel, Inc. stocks MTM Screws in lengths:
- 7/8"
- 1.25"
- Other lengths available upon special order
ST® Rivet
An open-end blind rivet is designed to attach 2 thin pieces of metal for a low-profile appearance.
Applications include metal roofing ridge-caps, roof gutters & downspouts.
The table below can be used to figure approximate quantities of screws for various purlin spacings and sizes of roofs. Screws are available in quantities of 250.
SCREW (purlin) SPACING
linear ft of panels
in your order 12inch 18 inch 24 inch
50 270 180 135
100 540 360 270
200 1080 720 540
300 1620 1080 810
400 2160 1440 1080
500 2700 1800 1350
600 3240 2160 1620
700 3780 2520 1890
800 4320 2880 2160
900 4860 3240 2430
1000 5400 3600 2700
1100 5940 3960 2970
1200 6480 4320 3240
