FastenMaster GuardDog Exterior Wood Screws - 1350 Count - 3-1/2"

Shop the FastenMaster Store
Quick ID: Q58
Always Ships Free

In Stock

Usually Leaves Warehouse Same/Next Business Day


  • Versatile head style is flexible enough to be used with the PoziSquare Drive, #2 square drive or #2 Phillips drive
  • Guaranteed corrosion resistance
  • Color matched to blend in with new pressure treated decking
  • Sharp threads quickly penetrate lumber
  • Free PoziSquare driver bit included


GuardDog has a versatile head style that be used with a PoziSquare Drive, #2 square drive or #2 Phillips drive. It is guaranteed corrosion resistance, plus color matched to blend in with pressure treated decking. Enjoy easy installation with sharp threads that quickly penetrate lumber. A free PoziSquare driver bit is included. The GuardDog coating has been tested and approved for use in ACQ, Copper Azole PT, Redwood and Cedar applications. This fastener is guaranteed to protect against rust for the life of the project.

Installation allows you to use a 0-1800 RPM variable speed drill (at least 14.4V if cordless). Use the PoziSquare driver bits provided and install fasteners perpendicular to the deck. Increase drill speed as the screw threads into the deck. Slightly countersink and do not overdrive. If cam-out occurs, be sure to remove and replace the screw.


Manufacturer Part NumberFMGD312-1350
Sub BrandGuardDog
Compatible Tools0-1800 RPM variable speed drill (at least 14.4V if cordless)
Coverage (Square Feet)500 square feet of deck surface based on a fastening pattern of 2 screws per joist, spaced every 16", into standard 6" wide decking
Driver Bit IncludedYes
Included AccessoriesFree Bit
Number of Screws1350
Package Quantity1350
Screw Drive TypePoziSquare Drive
Screw Head StylePoziSquare Drive - Also compatible with #2 Square Drive and #2 Phillips Drive
WarrantyFully tested, fully guaranteed in ACQ, Cedar, Redwood and Copper Azole

Weights and Dimensions

Weight (Pounds)25
Length (Inches)3.5

Reviews & Q&A

Want to learn more? Read product reviews and questions and answers about this product from other customer just like yourself. Have a question? Just click the 'Ask a Question' button and let us know. We'll review your question and post the answer here.