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This 2-pack of M8 x 40mm star hand knob tightening screws offers a precision-engineered, fully threaded design made from durable alloy steel and plastic. Ideal for umbrella bases and various mechanical applications, these screws provide superior grip and corrosion resistance, ensuring reliable replacements that outperform standard plastic knobs.
| ASIN | B07DLRRB3Z |
| Best Sellers Rank | #21,998 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #10 in Star Knobs |
| Brand | Kasteco |
| Color | Silver |
| Compatible Groove Diameter | 8 millimeters |
| Customer Reviews | 4.3 out of 5 stars 993 Reviews |
| Drive System | Torx |
| Exterior Finish | Black Oxide |
| Fastener Size | M8 |
| Fastener Type | Machine Screw |
| Finish Types | Powder Coated |
| Head Style | Flat |
| Head Type | Hex |
| Included Components | Knob, Lock |
| Item Diameter | 8 millimeters |
| Item Dimensions | 1.52 x 0.87 x 0.04 inches |
| Item Weight | 0.27 g |
| Item dimensions L x W x H | 1.52 x 0.87 x 0.04 inches |
| Manufacturer | KTZZ |
| Material | Plastics and Metals |
| Material Type | Plastics and Metals |
| Metal Type | Alloy Steel |
| Model | 2fdaa9b5-2fd1-4c92-a813-b552839cc870 |
| Number Of Items | 2 |
| Number of Pieces | 2 |
| Outside Diameter | 8 millimeters |
| Point Style | Round Point |
| Screw Head Style | Flat |
| Screw Point Style | Round Point |
| Set Name | 2 Pack |
| Set Screw Thread Type | Metric |
| Size Name | M8 x 40mm |
| Thread Coverage | Fully Threaded |
| Thread Size | M8 |
| Thread Style | M8 |
| Thread Type | Metric |
| UPC | 675663909047 |
| Unit Count | 2 Count |
A**R
Good
Good
A**R
Perfect fit
Perfect for my harley bagger
D**N
Great Grip
We were replacing a worn out bolt. So pleased with this one because the grip is larger and more pronounced which makes tightening the bolt so much easier. Very pleased with this product.
A**Y
Fixed my canopy
This fixed my canopy swing. These are much better quality than the ones the swing came with which were plastic. The size was a fit and priced well! These screws will hold up more than the plastic.
E**E
Good replacement for hand tightening knob
It was the right thread size and screw length. The knob was a bit smaller that my worn out original. The smaller knob requires more torque to tighten the screw.
J**5
Game changer!!
This was a game changer. I ordered this use on my adjustable pool basketball hoop. It was perfect!!
A**Z
Did not work for 5/16"
I bought these to use with 5/16 T-nuts that accept 5/16" bolts. They say M8 is the same as 5/16. I could not thread these into the female T-nuts I installed. If you need a specific diameter bolt, choose that and don't accept that M8=5/16";
V**U
Not the right size
Didn't fit my requirement so returned them
Trustpilot
3 weeks ago
2 months ago