smittyd said: Hello. What size lag bolts should I use when attaching 2x6's to 4x4 post that I have cemented into the ground? These 2x6's will be 

On many older decks the 4×4 posts were notched and then lagged to the rim joist with 3/8 in. or 1/2 in lag bolts or structural screws such as LedgerLoks. More conscientious builders may

Package：T304 stainless steel Lag bolt screw x 20, Fender washers x 20.Thread diameter is 5/16”, length is 3”. Screw head style-External hex head. Size-M8.

Oct 12,  · What Size Lag Bolts Do You Need to Attach a Deck to a House? The IRC gives three options: 1/2 inch lag bolt 1/2 inch lag screw 1/2 inch bolt These are all with the ledger spaced off the wall sheathing by 1/2 inch. The lag bolt needs to be long enough to penetrate the inside of the rim board of the house by 1/4 inch.

Lag bolt assemblies for installing railing posts. Glass Railing Made Easy. Call 800-545-1275 8am-5pm PST. Request a Quote. Glass Railing Post - Deck Mount $89.80. Quick View. Post Base Plate $42.20. Quick View. Glass Railing Post - 135 Degree $106.95. Quick View. Post Base Plate 135 Degree $49.45.

When you prepare a materials list for your deck project, throw a half-dozen extra galvanized lag bolts from the bulk bins at the home center into a plastic bag. You’ll need these for the stair

For deck framing, structural wood screws such as Simpson SDS 1.5” screws work with joist and stringer hangers, as well as post/beam brackets.

A 6×6 rated for ground contact has a higher level of chemicals, and therefore greater corrosion potential, than a 2×8 or decking plank rated for above-ground use. Check the label, typically stapled to one end of a stick of lumber if you’re unsure. CORROSION PROTECTION

However, for 1/2-inch lag screw, full penetration of 4-inches (8D) is only available for 6-inch long lag screw that so that the tip length extends through the stud. Yet, providing minimum edge distance of 1-1/2D (in wall stud) would not be practical for 1-1/2 inch thick wall stud unless lag screw is only 5/16-inch diameter.

Note: A deck must comply with the building code development permit & zoning The size and spacing of the lag bolts (screws) are based on their capacity.

I didn't build the deck originally. To connect the new posts to the floor joists I used two Simpson Strong-Tie DTT2Z ZMAX galvanized 14-gauge 2x deck tension tie connectors at each post base where it passed next to the floor joists. Here's the connector I used on my own deck posts. You need two per deck railing post.