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New Pressure-Treated Lumber
There are improvements in wood-preserving technology. They are in response to a growing market demand for less toxic, more environmentally acceptable preservatives for wood.

These new treatments include ACQ and Micronized Copper. ACQ stands for Alkaline Copper Quat. The central ingredient is 100% recycled copper. Alkaline is a natural base, and quat is a fungicide that attacks decay organisms. Micronized Copper treatments utilize copper but in micro-sized particles.

Phillips Fastener is pleased to announce all of the Phillips II Plus Wood Screws and Phillips II Plus Composite Screws are formulated to work with all types of pressure-treated lumber. All three colors – red, tan, and green – can be used.

Tested to Building Code Standards
Phillips II Plus Wood Screws and Phillips II Plus Composite Screws have passed AC257 testing by an ICC-accredited laboratory. Tested to exposure condition 4 (the most severe category of this test).

Lifetime Guarantee
Phillips II Plus Wood Screws and Composite Screws are formulated to prevent rust for the life of your project. The coatings will not prevent staining or streaking related to weather and surface punctures on exterior woods that have not been properly treated and sealed.
Ultimate Pull-Out Strength

Installed Ultimate Pull-Out Strength 2,000-psi Concrete 3,000-psi Concrete 4,000-psi Concrete
Fastener Size Depth of Embedment Pull-out Tension Shear Strength Pull-out Tension Shear Strength Pull-out Tension Shear Strength
3/16" 1" 400 lbs 770 lbs 500 lbs 770 lbs 600 lbs 1,000 lbs
3/16" 1-1/4" 500 lbs 780 lbs 600 lbs 780 lbs 700 lbs 1,000 lbs
3/16" 1-1/2" 800 lbs 850 lbs 900 lbs 970 lbs 1,000 lbs 1,100 lbs
3/16" 1-3/4" 1,100 lbs 850 lbs 1,200 lbs 970 lbs 1,300 lbs 1,100 lbs
1/4" 1" 620 lbs 745 lbs 760 lbs 1,250 lbs 1,000 lbs 1,600 lbs
1/4" 1-1/4" 710 lbs 950 lbs 1,090 lbs 1,540 lbs 1,250 lbs 1,600 lbs
1/4" 1-1/2" 1,030 lbs 1,190 lbs 1,380 lbs 1,700 lbs 1,640 lbs 2,000 lbs
1/4" 1-3/4" 1,600 lbs 1,650 lbs 1,850 lbs 2,190 lbs 2,200 lbs 2,190 lbs

Five Basic Steps for KwikTap Screws

  1. Concrete screws require 1" minimum embedment.
  2. You must pre-drill a proper sized hole, and it must be a minimum of 1/4" deeper than the screw.
  3. The drilled hole must be cleaned of debris after drilling. If the dust that is caused by drilling is not removed, it can cause the screw to bind and be unable to be driven in.
  4. Drive the screw in flush to the concrete. Do not overtighten as that will strip the concrete.
  5. Always follow local building code.
Screw Selection Guide

Item Being Mounted Recommended Screw Size Maximum Allowable Load Per Screw Drill Bit Size
Diameter Length Tension Shear
1/8" Thick Brackets 3/16" 1-1/4" 90 lbs 200 lbs 5/32"
1/4" 1-1/4" 215 lbs 325 lbs 3/16"
Electrical Boxes and Conduit Brackets 3/16" 1-1/4" 90 lbs 200 lbs 5/32"
1/4" 1-1/4" 215 lbs 325 lbs 3/16"
All Other Items Under 1/4" thick 3/16" 1-1/4" 90 lbs 200 lbs 5/32"
1/4" 1-1/4" 215 lbs 325 lbs 3/16"
1/4" Plywood 3/16" 1-3/4" 140 lbs 200 lbs 5/32"
1/4" 1-3/4" 260 lbs 325 lbs 3/16"
1/4" Thick Brackets 3/16" 1-3/4" 140 lbs 200 lbs 5/32"
1/4" 1-3/4" 260 lbs 325 lbs 3/16"
3/8" Plywood 3/16" 1-3/4" 140 lbs 200 lbs 5/32"
1/4" 1-3/4" 260 lbs 325 lbs 3/16"
1/2" Plywood 3/16" 1-3/4" 140 lbs 200 lbs 5/32"
1/4" 1-3/4" 260 lbs 325 lbs 3/16"
Any Item From 1/4" To 1/2" Thick 3/16" 1-3/4" 140 lbs 200 lbs 5/32"
1/4" 1-3/4" 260 lbs 325 lbs 3/16"
5/8" Plywood 3/16" 1-3/4" 90 lbs 200 lbs 5/32"
1/4" 1-3/4" 215 lbs 325 lbs 3/16"
3/4" Plywood 3/16" 1-3/4" 90 lbs 200 lbs 5/32"
1/4" 1-3/4" 215 lbs 325 lbs 3/16"
1" Furring Board 3/16" 1-3/4" 90 lbs 200 lbs 5/32"
1/4" 1-3/4" 215 lbs 325 lbs 3/16"
Any Item Over 1/2" Up To 3/4" Thick 3/16" 1-3/4" 90 lbs 200 lbs 5/32"
1/4" 1-3/4" 215 lbs 325 lbs 3/16"
Any Item Over 3/4" Up To 1-1/4" Thick 3/16" 2-1/4" 90 lbs 200 lbs 5/32"
1/4" 2-1/4" 215 lbs 325 lbs 3/16"
2 x 4 (Short Side) 3/16" 2-3/4" 90 lbs 200 lbs 5/32"
1/4" 2-3/4" 215 lbs 325 lbs 3/16"
2 x 6 (Short Side) 3/16" 2-3/4" 90 lbs 200 lbs 5/32"
1/4" 2-3/4" 215 lbs 325 lbs 3/16"
2 x 10 (Short Side) 3/16" 2-3/4" 90 lbs 200 lbs 5/32"
1/4" 2-3/4" 215 lbs 325 lbs 3/16"
Any Item Over 1-1/4" Up To 1-3/4" Thick 3/16" 2-3/4" 90 lbs 200 lbs 5/32"
1/4" 2-3/4" 215 lbs 325 lbs 3/16"

The above chart is based on 3,100-psi concrete with a 4:1 safety factor applied