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๐ Lock it down with strength and style โ donโt let your projects settle for less!
The CUKAYO 5/16" x 4-3/16" Expansion Concrete Wall Anchors Eyebolt Screws are heavy-duty, fully threaded M8 eyebolts made from premium 304 stainless steel. Each anchor supports up to 375lb (170kg) and expands securely in concrete or masonry with a recommended 12mm drill bit. Ideal for professional-grade fastening in construction, home improvement, and industrial applications, these eyebolts come in a convenient 5-pack to meet multiple project needs.












| ASIN | B0B4NC3V4V |
| Best Sellers Rank | #28,253 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #21 in Eyebolts |
| Brand | CUKAYO |
| Color | Silver |
| Compatible Groove Diameter | 8 Millimeters |
| Customer Reviews | 4.6 out of 5 stars 257 Reviews |
| Exterior Finish | Stainless Steel |
| Fastener Size | M8 |
| Fastener Type | Eye Bolt |
| Finish Types | Brushed |
| Grade Rating | Grade 304 |
| Head Style | Flat |
| Head Type | Eye |
| Item Diameter | 8 Millimeters |
| Item Hardness | Rockwell B70-80 |
| Manufacturer | CUKAYO |
| Manufacturer Grade | Grade 304 |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Model | CKY-M8 |
| Number of Pieces | 5 |
| Part Number | CKY-M8 |
| Screw Head Style | Flat |
| Size Name | M8 |
| Thread Class | 2A |
| Thread Coverage | Fully Threaded |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Metric |
| Unit Count | 5.0 Count |
M**S
Nice Concrete Anchors
Needed a way to secure outdoor power tools. These were installed in carport concrete and worked well.
J**Y
Well made
Works well and holding up like champs.
J**Y
Using for a carport to secure roof panels and carport frame with cables.
The anchors themselves are great, but let's talk about the 12mm masonry bit it says it requires. I got one and made a hole that was too small. I used a 1/2" (#12) bit and even had to bore that out a little to get them in. The 1/2" bit did take out a little of the opening, so one nut is nearly in the hole, but I could change that. The point is that it won't fit into a 12mm hole, so if you already have a 1/2" bit, that is what you need. I've used it on 4 of them. Other folks have said that's too big, but that is not my experience, but not saying it won't work for you. The eye doesn't fit flush with the cement and a good amount (3/4" or so) of the threads are visible. I saw no way to tighten it and keep it in the hole at the same time. Tightening it raises it out of the hole and/or lowers the nut. I'm using it on a concrete patio to tie down the roof with a cable (Florida hurricanes). This is my first time, so I may not have done it correctly. I just wanted something that won't come out.
K**Y
Worked perfectly
Easy to install in brick post. Perfect for outdoor drapery cables.
E**S
Anchors away for patios
Good for many uses, but you have to get the correct mason bit size otherwise itโs too loose and the first time until I ordered a mason bit 1/64 it works like a charm. The first time was for my RV parking gate to stay open while moving my vehicles. It was kinda loose not tight so Mr Gizmo (Me) used JB Weld my favorite weld for lots of breakage! My little Glass bubbler fell And the top broke off,JB Weld did it and many other projects. I used it the second time with the correct bit that was very HARD to find in a mason bit. Worked good in my patio shade for โBungeeโ wind support and my patio shades are down most of the year.
S**E
Nice
I bought these anchors not for a wall but for my carport. I just had it cemented recently and needed a couple anchors in the ground to hold and be able to clip in a privacy tarp. This worked perfectly. I drilled a deep enough hole in the cement and tapped this in and then turned the eye hook to expand the anchor. It is solid!, stays in place. Now I'm able to clip in the tarp with carbiners and I can remove the eyehook so I don't trip over it when I'm not using it. It's solid and a good deal and a win win for me.
K**G
Working fantastic! Heavy duty.
Very heavy duty. Can take a lot of tension and weight. Iโm using them to anchor a yard sail to a concrete wall. Make sure you drill the holes deep enough and just tap them in with a hammer.
D**N
Works great
Worked great. I am in maintenance and we used them to secure ladders.
K**A
BUEN PRODUCTO
Muy buen producto
Trustpilot
3 weeks ago
3 days ago