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🔧 Secure your space with zero stress—anchor like a pro, every time!
The M8 x 75 Genuine Thunderbolt Masonry Concrete Anchor Screw features a patented concave thread for low-torque, high-strength fixing without expansion stress. Designed for versatile use across concrete, brick, wood, and stone, it enables quick, precise, and removable installations close to edges or through hollow sections—eliminating the need for plastic plugs or complex marking.
| ASIN | B01720TNQC |
| Best Sellers Rank | 26,733 in DIY & Tools ( See Top 100 in DIY & Tools ) 376 in Screws (DIY & Tools) |
| Brand Name | Thunderbolt |
| Compatible Groove Diameter | 2E+1 Millimeters |
| Customer Reviews | 4.5 4.5 out of 5 stars (761) |
| Drive System | External Hex |
| Exterior Finish | Plastic |
| Fastener Size | M8 x 75 |
| Fastener Type | Hexagon Anchor Bolt |
| Finish Types | plastic |
| Grade Rating | Class 10.9 |
| Head Type | Hex |
| Item Diameter | 8 Millimetres |
| Item Hardness | Grade 10.9 |
| Item Weight | 1 Pounds |
| Manufacturer | GENUINE THUNDERBOLT® |
| Manufacturer Grade | Class 10.9 |
| Material Type | Plastic |
| Maximum Shear Strength | [10, 70] MPa |
| Metal | Stainless Steel |
| Number of Pieces | 1 |
| Screw Head Style | Hex |
| Screw Point Style | hollow |
| Set Screw Thread Type | M (Manufacturer |
| Size | M8 x 75 |
| Thread Class | Class 6 |
| Thread Coverage | Fully Threaded |
| Thread Size | M8 |
| Thread Style | Standard |
| Thread Type | UNC |
| Unit Count | 8.0 count |
B**S
Perfect for many projects
Brilliant product
M**S
Did the Job
I was having difficulty getting a good solid fix to very hard bricks with rawl bolts but these worked great. Hole must be made with the exact drill size indicated.
M**N
Good quality
Good quality good grip fast delivery
M**Y
Rock solid and easy to use
These are great I used them to put a basketball hoop on the side of the house for my son.First of all they are an absolute doddle to use,just drill an 8 mm hole give them a little tap with a hammer and tighten them with a spanner.Secondly,they are solid,these will never fall out they have actually screwed into the brick and I'm pretty confident the basketball hoop could take my full weight.
R**R
Easy to use
Easy to fit as you just drill pilot hole and tighten with a socket
A**R
Review
Excellent product and service
Q**T
They work but ...
These really do work but not that great on solid concrete, I felt they would snap once they started to bite so I went for a bigger drill bit but it was still tough going.
J**D
Not a problem
I read reviews that said this product didn't work. Those reviews are WRONG. These bolts work perfectly well if you drill the correct size hole - M8 = 8mm drill hole. The bolt then cuts into the hole and makes a very solid fastening. Note - this a genuine review and I will allow Amazon to give out my mobile number if anyone is in doubt.
L**U
Fixation abri bois
Trustpilot
1 month ago
1 month ago