Strong-Bolt 1/2 in. x 5-1/2 in. Zinc-Plated Wedge Anchor

Drill bit diameter needs to match that of the wedge anchor. You will need 1/2" diameter bit for 1/2" diameter wedge anchor. A couple of points to consider: 1. Leave some backup material at the bottom of slab, i.e. do not try to drill right through as the drill bit may blow out the bottom of slab due to hammer action. Leave minimum of 2 3/4" back up material. 2. Zinc plated finish does not provide much of corrosion protection. Consider Strong-Bolt wedge anchor in 304 stainless steel finish.

The zinc plated carbon steel Strong-Bolt 2 has a low level of corrosion protection and would be for dry, interior conditions. For exterior, please see the Type 304 stainless steel (STB2-505124SS) which provides a high level of corrosion protection or the Type 316 stainless steel (STB2-505126SS) which is for severe conditions. Please see the Corrosion section of our website for complete information and to determine the recommended finish for your condition: https://www.strongtie.com/solutions/corrosion. Thank you!

We are not sure we are understanding the question correctly. Please contact our Engineering Support Dept. for assistance - 800/999-5099. Thank you!

The STB2 does not fall under SAE grade designation. Please feel free to call us to discuss further - 800/999-5099. Thank you!

We are not familiar with "SD2" code compliance. Please see our website for all compliance documents. Feel free to contact our Engineering Support Department (800-999-5099) with any further questions regarding this matter. Thank you!

The wedge anchors should not be painted before installed/tightened to the setting torque as the paint can alter frictional characteristics and therefore performance of the anchor. We do not have any restrictions if just painting the nut and exposed top part of the anchor after installed/tightened, however we do not have any information/guidelines to provide regarding painting zinc coated steel as this is not our area of expertise. You may wish to check further with a paint manufacturer or the American Galvanizers Association for information on painting zinc coated/galvanized steel. Thank you!

The STB2-50512R25 is zinc plated which provides a low level of corrosion resistance and can be used with limited treated lumbers in dry service only (generally interior). This anchor is also available in Type 304 Stainless Steel (STB2-505124SS) which provides a high level of corrosion resistance and Type 316 (STB2-505126SS) which provides severe level of corrosion protection. Please see the "Guidelines for Selecting the Proper Materials and Coatings" page on our website to determine the recommended finish based on your condition. Thank you!

Can't say but after drilling the correct size, 1/2" hole with a new Bosch concrete/masonry bit and following the instructions on the package to pound this wedge anchor in place (per my review) and having the anchor just spin in the hole and not grab when trying to tighten the nut, I won't be buying this brand again. I used it to anchor a Simpson Strong tie 4 X 4 post-base bracket to my concrete for the bottom post of a stairway handrail to my deck and this thing's failure botched the entire project.

As long as you are mounting the ledger to a concrete block wall these are great anchors. Just drill a hole through the board and the concrete block, tap the anchor in place and tighten down the nut.