CAMO Multi-Ply Flat Head Structural Screws - 5/16"

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Quick ID: Q56388
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  • Type 17 slash point removes board material as it's driven, reducing friction and drive time
  • T-40 Star drive reduces cam-outs and prevents splitting
  • Straight knurl above the thread reduces torque, aiding in driving speed
  • Underhead nibs help countersink the screw, seating it properly
  • Large flat head maximizes pull-through holding power and finishes flush with work area
  • Coated with our proprietary PROTECH Ultra 4 coating system which features four layers that combine to provide the ultimate corrosion protection against harsh environmental elements
  • No pre-drilling required
  • 3-1/2" for ledger boards, 2-ply engineered beams, general construction
  • 4" for interior corridor ledgers and general construction projects
  • 5" used for ledger boards, 3-ply engineered beams, and general construction


Code-compliant and exterior-coated, CAMO Multi-Ply Flat Head Structural Screws - 5/16" hold strong and finish flush in a variety of applications. They are offered in multiple lengths including the 2-7/8", 4-1/2", 6" and 6-3/4". All screws are third-party tested and certified IBC and IRC code compliant. These structural wood screws feature industry-leading PROTECH Ultra 4 four-layer coating system, offering superior corrosion resistance for long-lasting connections. CAMO Structural screws are engineered to start fast, drive easy, and finish flush so you can get the job done and get on your way.

The 2-7/8” length screw is specifically designed to fasten 2-ply dimensional wood headers and 2-ply roof girder trusses and can be used in a number of other construction projects. For other general construction projects and also as a replacement for 1/2" lag screws, use the 4-1/2", 6", or 6-3/4" screws. The 4-1/2” multi-ply screw is specifically designed to fasten 3-ply roof girder trusses and 2-ply open web floor trusses. The 6” multi-ply screw is specifically designed to fasten 4-ply roof girder trusses and 2-ply open web floor trusses. The 6-3/4” multi-ply screw is specifically designed to fasten 4-ply roof-engineered beams, with no pre-drilling required.


Sub BrandStructural
ApplicationIndoor and Outdoor
Bit SizeT-40
Code ApprovalCertified IRC and IBC Code-Compliant
Compatible MaterialsACQ Treated Lumber
Driver Bit IncludedYes
FinishProTech Ultra 4
MaterialCarbon Steel
Package IncludesScrews and (1) T-40 Bit
Screw Drive TypeStar
Screw Head StyleFlat
Screw Point TypeType 17 Auger Tip
WarrantyLimited Lifetime Warranty


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