In a ledger board application, a ½” x 4” lag bolt was tested to provide 180 lbs support of allowable shear load per screw. Be sure to know what you are connecting to. Standard bolt patterns are based on a solid connection to a solid-sawn and fully supported band joist in the home. Lag screws that hit wall plates or studs may not be comparable.

To 36, we add 9 1/4 inches for the width of the 2x10 joist, plus 1 inch for the thickness of the 5/4 decking, and subtract 1 inch for the top cap - for a total railing post length of 45 1/4 inches.

5/8 x 8". Note that 3/4" bolts would work just as well. Charles Ledbetter C-Squared Fine Deckbuilding Raleigh, NC. "Jimmy" 

Nov 04,  · Ideal for mounting your deck posts on all kinds of wood decking from natural, to pressure-treated, hardwoods and composite; reach for the 5/16 Inch RSS by GRK. The Caliburn

Dec 07,  · Step 1 – Measure the Thickness of Your Lumber Materials You need to check the thickness of your lumber materials in order to get an idea as to the size and length of the lag screws that you need to connect the logs together. To do this, use a ruler to measure the thickness of the log then record the figures on paper.

A deck post should be compatible with the bolts that are provided, so it is important to choose the correct size. The most popular deck post sizes are 2″ and 4″ 

All Lag Bolts can be shipped to you at home. What is the best-rated product in Lag Bolts? The best-rated product in Lag Bolts is the 1/4 in. x 3 in. Zinc Coated Powerlag Hex Drive Washer Head Lag Screw (500 per Pail). What is the most common feature for Lag Bolts? The most common feature for Lag Bolts is acq rated.

Answer: Yes! As a matter of fact, structural screws are much stronger than lag bolts. And they make more of a robust connection with the surface 

Through-bolts are stronger and should be used where possible. For the heaviest connections on a deck, such as where ledgers attach to the house or to posts, use 1/2-inch bolts or lags. Place large washers under the heads of lags and at both ends of through-bolts. Re tighten bolts and lags after the first year and check periodically for tightness.

Regal Railing 2-1/2" Lag Screws. Regal Railing 2-1/2" Lag Screws are used for attaching Regal Posts to your deck surface. Regal Lag Screws are color matched to Regal Rail Posts and coated to resist corrosion. Available in: White, Black, Taupe, and Yard Bronze. Due to manufacturing delays the current delivery time on this item is 2-3 weeks.

Deck Boards Working with deck boards should be calm and secure. So choose beautifully coated screws. Screws for boards should be 2.5-3 inches long. Also, the diameter of