Buying 1/2-inch concrete anchors starts with a decision between wedge anchors and screw anchors. This head-to-head looks at the Powers Fasteners 7423SD1-PWR 50-pack wedge anchor set and the Simpson Strong-Tie THD501200H screw anchor to help you pick the option that matches your project.
Quick verdict
For a 50-count pack of 1/2-inch by 4-1/2-inch wedge anchors, the Powers set is the straightforward choice. For a 1/2-inch by 12-inch heavy-duty screw anchor from Simpson Strong-Tie, the THD501200H is the one to pick. Both products are open-box items and use inch measurements.
Comparison at a glance
| Item | Listed price | Price bar | Anchor type | Length | Finish / material | Condition |
|---|---|---|---|---|---|---|
| Powers Fasteners 7423SD1-PWR 1/2 in x 4-1/2 in | $37.99 | Wedge anchor | 4.5 in | Carbon steel, zinc | New - Open box | |
| Simpson Strong-Tie THD501200H 1/2 in x 12 in | $39.99 | Heavy-duty screw anchor | 12 in | Zinc plated | Open box |
Where each product wins
The Powers set wins on supply: it gives you 50 wedge anchors in one 4.5-inch format. The Simpson Strong-Tie product wins on length: it is a 12-inch heavy-duty screw anchor with a zinc-plated finish. If your plan calls for a compact anchor and you want a larger batch, the Powers set covers that need. If your plan calls for a longer screw-style anchor, the Simpson Strong-Tie item is the match.
Product notes
50 - Powers Fasteners 7423SD1-PWR Seismic Concrete Wedge Anchors 1/2" x 4-1/2

The Powers Fasteners 7423SD1-PWR listing gives you 50 wedge anchors in one pack, each sized 1/2" by 4-1/2". The anchors are supplied in new, open-box condition and are built with carbon steel and zinc. For a project that calls for a 4.5-inch wedge anchor, this 50-count bundle offers a practical batch in one purchase. Its main limitation is length: if your fastening plan requires a 12-inch anchor, this set will not cover that. Buyers who need a shorter wedge anchor with a higher piece count are the best fit here.
Structural Fasteners Concrete Anchor Simpson Strong-Tie THD501200h 1/2 x 12 New

The Simpson Strong-Tie THD501200H is a 1/2-inch heavy-duty screw anchor with a 12-inch listed length and a zinc-plated finish. Its listed price is $2.00 more than the Powers set, so the decision may come down to whether you need that longer anchor. When your concrete fastening task calls for a longer screw-style anchor, this product gives you that form in a 12-inch length. It is also supplied in open-box condition. The price difference is a limitation if you want the less expensive of the two options; the anchor sits above the other listing in cost.
Final choice by use case
Choose the Powers 7423SD1-PWR when your anchor call is a 4.5-inch wedge anchor and you want 50 pieces in one pack. Choose the Simpson Strong-Tie THD501200H when you need a 12-inch heavy-duty screw anchor.