5/16" x 3" Lag Screw, grade 316 SS

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0.31 (in)
0.31 (in)
3.00 (in)
Current Stock:
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CLEARVIEW® - 5/16-in x 3-in Lag Screw

These 5/16" x 3" stainless steel lag screws are used to attach Cascadia posts to the mounting surface.


  • Material: Marine grade 316 stainless steel for superior corrosion resistance.
  • Dimensions (D x L): 5/16-in x 3-in.
  • Application: Attaches a Cascadia stainless steel post to the mounting surface.


  • Create a Beautiful and Distinctive Look: Can be used with other off-the-shelf components to distinctively decorate decks, patios, stairs, balconies, porches, and verandas.
  • Save Time and Money: Eliminates the need for consultation, custom design work, and expensive skilled labor.
  • Reduce Waste and Inefficiency: Marine grade 316 stainless steel is 100% recyclable and reduces future maintenance by resisting corrosion.
  • Easy Do-It-Yourself (DIY) Installation: Simple design with educational How-To and FAQ resources that include DIY instructions and DIY videos to facilitate installation.

Cascadia Railing System Installation Instructions

Video Resources