CAMO Heavy Duty Multi-Purpose Flat Head Structural Screws - 5/16"

Quick ID: Q56345

from $20.38
from $20.38

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Helpful HintLooking for a similar screw in a shorter length? Shop CAMO Ledger and Multi-Ply Flat Head Structural Screws for additional sizes.


  • Type 17 slash point removes board material as it's driven, reducing friction and drive time
  • T-40 Star Drive reduces cam outs and eliminates excessive wear on the bit
  • Includes T-40 bit in every package
  • 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 proprietary PROTECH Ultra 4 coating system which features four layers that combine to provide the ultimate corrosion protection against harsh environmental elements
  • Commonly replaces traditional 1/2" lag bolts
  • For interior and exterior use
  • For deck blocking, posts, structures, and general construction


Skip pre-drilling and enjoy fast starts with CAMO Heavy Duty Multi-Purpose Flat Head Structural Screws. They start fast, hold strong, and finish flush in a variety of general construction projects. They are third-party tested and certified IBC and IRC code compliant, and are an ideal replacement for traditional 1/2" lag screws. These structural wood screws feature an industry-leading PROTECH Ultra 4 four-layer coating system, offering superior corrosion resistance for long-lasting connections. Use these heavy-duty multi-purpose screws for wood deck posts, beams, handrails, outdoor structures, and other general construction projects.


Sub BrandStructural
ApplicationIndoor and Outdoor
Code ApprovalCertified IRC and IBC Code-Compliant
Compatible MaterialsACQ Treated Lumber
FinishProTech Coated
MaterialCarbon Steel
Recommended UseTreated and Other Softwood Lumber, but can be used on Most Types of Decking
Screw Drive TypeStar
Screw Head StyleFlat Head
Screw Point TypeType 17 Auger Tip
WarrantyLimited Lifetime Warranty

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