Fastenmaster OlyLog Log Home Screws - Box (250) 10" Screws
Fastenmaster OlyLog Screws with Log and Hex Bits
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Olylog Log Home Screws

The OlyLog Log Home Screw is the first heavy-duty log home fastener that requires no predrilling, greatly reducing labor time. The self-countersinking design provides strong pull-down power, allowing logs to settle naturally. OlyLog Screws install more efficiently than lags and spikes, and eliminate the risk of damage caused by sledge hammers. Removable and reusable, OlyLog Screws are the fast and easy way to join logs.
SKU: LOG212
$121.15
By OMG Fastenmaster
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The FastenMaster OlyLog Log Home Screw is the first threaded log home fastener that requires no predrilling and is ACQ approved. Since its introduction, the OlyLog has changed the way log homes are constructed.

FastenMaster OlyLog Log Home Screw Product Features and Benefits
• Requires no predrilling
• Self-countersinking design provides a flush installation
• Removable and reusable
• Engineered for increased strength and performance
• Strong pull down and holding power
• Corrosion resistant
• Greatly reduced labor time.
• Installs faster and easier than lags and spikes
• Allows log to settle naturally
• Draws warped logs down
• Eliminates damage caused by a sledge hammer

FastenMaster OlyLog Log Home Screw Installation Instructions
• Use a 1/2", high torque, low RPM drill.
• Install OlyLog perpendicular to the log.
• Countersink the OlyLog a minimum of 1/4".

FastenMaster OlyLog Log Home Screw Physical Data
• Available Sizes: 2 1/2", 4", 6", 8", 9", 10", 12", 14", 16"
• Head Style: Hex
• Thread Length: 2"
• Thread Diameter: 0.25"
• Shank Diameter: 0.19"
• The 2 1/2" screw size is packaged 500/box. All other screw sizes are packaged 250/box. One hex bit per box is included.

FastenMaster Olylog Log Home Screw Resources
• FastenMaster Olylog Catalog Detail Page
• FastenMaster Olylog Guarantee of Performance
• ICC ES Evaluation Report
• Olylog/Timberlok - Truss to Top Plate Connection
• Olylog/Timberlok - Uplift & Lateral Resistance Tech Guide
• Olylog/Timberlok - Stud to Top & Bottom Plate Uplift Attachment Tech Guide
• Olylog/Timberlok - Connecting Gamble Trusses to Top Wall Plate Tech Guide
• Olylog/Timberlok - Connecting Drag Strut Trusses to Top Wall Plate Tech Guide
• Olylog/Timberlok - Uplift & Lateral Strength Design for Wall to Rim Joists Tech Guide
• Olylog/Timberlok - Top Plate Roll Resistance to Trusses and Rafters Attached to the Tops of Walls Tech Guide
• Olylog/Timberlok - Pole Barn Header Connection Tech Guide
• Fastenmaster Fasteners- Safety Data Sheet

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Product Questions

  • I am building a Log Home in Scotland using a tongue and grooved log which is 180mm x 114mm or 7\" x 5\". This Scandinavian sourced house does not traditionally use OlyLog screws, however I would like to use them to reduce the settling time and to straighten twisted logs. Could you advise me on the spacing between the screws and whether I should use OlyLog screws or the heavier LogHog screws for this size of log?

    FastenMaster would recommend that you use either the 9" or 10" Olylog screw placed every two feet.  You can also use the 9" or 10" Log Hog screws placed every three feet for extra pull down strength.  The Log Hog screw does have an extra inch of thread making it a very heavy duty product.

  • What is the thread length for the Olylog screw?

    The thread length on all sizes of the Olylog screws are 2" with the exception of the 2 1/2" screws which have a 1 5/8" thread length.

  • I am building a log cabin using 8x8 square logs, what length would you suggest I use for screws as well as the spacing between the screws? What is the recommended method of securing the logs where there is a doorway or window?

    FastenMaster recommends sizing Olylog screws 2" longer than the nominal height of the logs, with spacing of the screws every 2 feet.  So we would typically recommend the 10" Olylog for your home.  Also, since the screws are packaged in 250 piece boxes, an easy method to estimate the boxes of screws you'd need is to divide your linear footage by 500 (250 pieces X 2' spacing). 

    On securing the logs over a door or window, the most important rule is to ensure that the log spans longer than the width of the opening.  In that way the log will serve as a lintel or header over the opening.  You definitely need to avoid having a butt joint over the opening.  FastenMaster does not give any specific recommendations on screw placement near openings, but good practice is to fasten screws 6" from each side of the opening.  

  • Can OlyLog fasteners be used to fasten decking materials?

    OlyLog screws are rated for use in deck framing and are ACQ approved. You may, however, find the Headlok Panel Fastener screw to be preferable in this case as it has a flat head instead of a hex head. The Olylog will also find very good use here in making rafter connections.

    In addition, I would recommend the OMG Ledgerlok for attaching the deck ledger boards to the house's rim joist. Its larger diameter is much more suited to the heavier loads of this connection.

    Lastly, I would recommend the OMG Guard Dog or the OMG Trio Deck Screw for attaching the decking boards. Their small size works very well here.