OlyLog Log Home Fastener

OlyLog is the first threaded structural log home fastener to require no predrilling. Since its introduction, OlyLog has changed the way log homes are constructed.

Design features of this product include:

  • Installs faster and easier than lags & spikes
  • Countersinks into log – Allows log to settle naturally
  • Draws warped logs down
  • Removable and reusable
  • Eliminates jarring and damage caused by a sledgehammer
  • ACQ approved

For OlyLog technical information, see the Technical Docs section below. For technical documentation of all our structural wood screws, see our Technical Resources page.

  • Sku Selections
  • Installation
  • Technical Docs
  • Purchase FM Products
OlyLog SKU Selection Guide
 2 1/2"   500 pc box   LOG212
 4"   250 pc box   LOG004
 6"   250 pc box   LOG006
 8"   250 pc box   LOG008
 9"   250 pc box   LOG009
 10"   250 pc box   LOG010
 12"   250 pc box   LOG012
 14"   250 pc box   LOG014
 16"   250 pc box   LOG016


Use a 1/2", high torque, low RPM drill. Install OlyLog perpendicular to the log. Countersink a minimum of 1/4".

ICC-ES Report, ESR 1078

The ICC-ES Evaluation Report demonstrates to the installer and code official that our LOK fasteners comply with the most current building codes. This report also provides the engineer with critical values needed to design safe installations. Reports from ICC-ES are the most recognized reports used by code officials across the U.S. This document can be shared with code officials, engineers, architects and specifiers who may have questions regarding proper use or code compliance of LOK fasteners.

DWG Drawings

For use in CAD software

Warranty Information

OlyLog Guarantee of Performance

The file contains information regarding OlyLog's product guarantee including fastener performance and corrosion resistance

Catalog Pages

Product specific pages from our FastenMaster catalog.

Purchase FastenMaster Products

To find a dealer near you, click below:

Find a Dealer

To order online, visit one of our online partners: