Olylog Size Variety Zoom

Olylog Log Home Fasteners

The OMG OlyLog Screw greatly reduces labor time. Self countersinking, no predrilling, strong pull down power.

Availability: In stock

Product Name Price Qty
2 1/2" - Box (500) Olylog Screws
4" - Box (250) Olylog Screws
6" - Box (250) Olylog Screws
8" - Box (250) Olylog Screws
9" - Box (250) Olylog Screws
10" - Box (250) Olylog Screws
12" - Box (250) Olylog Screws
14" - Box (250) Olylog Screws
16" - Box (250) Olylog Screws



The FastenMaster OlyLog Screw is the first threaded log home fastener which requires no predrilling and is ACQ approved. Since its introduction, the OlyLog has changed the way log homes are constructed.

FastenMaster OlyLog Product Features
• Installs much faster and easier than lags & spikes – Saves time and fatigue. – Dramatically lowers installed cost.
• Requires no predrilling – Eliminates on-site predrilling.
• Countersinks into log – Allows log to settle naturally.
• Draws warped logs down.
• Removable and reusable.
• Eliminates jarring and damage caused by a sledge hammer.
• Engineered for increased strength and performance.

FastenMaster OlyLog Product Benefits
• No predrilling.
• Self countersinking headstyle.
• Strong pull down and holding power.
• Removable: Just put the drill in reverse and back it out.
• Corrosion resistant. ACQ Approved.
• No sledge hammer damage.
• Greatly reduced labor time.

FastenMaster OlyLog 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 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"
• All screw sizes are packaged 250/box. One hex bit per box is included.

OMG Olylog Screw Resources
OMG FastenMaster Olylog Guarantee of Performance

Product Guide

Product Guide


Customer Reviews (3)

Log House With Red PineReview by Muleskinner
Ease of Use
The pull down power of theses screws are very impressive. A great product. (Posted on 5/1/17)
fastest shipper everReview by billy
Ease of Use
thank u (Posted on 6/22/16)
Best screw ever made for timber and log construction Review by Prologuy
Ease of Use
I am a log home builder and repair contractor in California. We have using Oly-Log since the early 90s. I thought these screws are truly the best thing since sliced bread. Then they came out with the Log-hog screw. This screw is amazing. You could take a 4" bow out of an 8' Doug Fir 6x6, As long as you are aren't screwing into the end grain of a log or beam this screw will bite hard and won't strip. Don't use your standard 850 rpm 1/2" drill for these screws. The best drill for driving these screws is a DeWalt 115-DW246. This drill is a 600 rpm variable speed 1/2" drill that can produce the torque and finesse it takes to drive these screws. (Posted on 5/25/16)

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Product Questions

Product Questions

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?
What is the thread length for the Olylog screw?
What is the main difference between the regular Olylog screw versus the Log Hog screws? Which one should I use for my 6x8 "D" logs?
Can OlyLog fasteners be used to fasten decking materials?
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 HogLog screws for this size of log.

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