







🔧 Fix it once, fix it right — the ultimate thread rescue kit!
The Rustark 84 Pcs Wire Thread Insert Kit features 7 metric sizes (M3-M12) of premium 304 stainless steel helicoil inserts. Designed for high precision and durability, it offers rust resistance, vibration-proof locking, and a maximum shear strength of 275 MPa. Packaged in a convenient organizer, this kit is ideal for professionals seeking reliable, reusable screw thread repairs across multiple industries.
| Material | Stainless Steel |
| Fastener Type | Helicoil |
| Thread Size | M3, M4, M5, M6, M8, M10, M12 |
| Exterior Finish | Stainless Steel |
| Color | Assorted |
| Metal Type | Stainless Steel |
| Finish Type | Brushed |
| Brand | Rustark |
| Item dimensions L x W x H | 4.96 x 2.56 x 0.87 inches |
| Item Weight | 0.16 Kilograms |
| Thread Type | Iso Metric |
| Inside Thread Size | M3, M4, M5, M6, M8, M10, M12 |
| Thread Style | Internal Metric Unified National Coarse |
| Thread Class | Class 2B |
| Size | One Size |
| Maximum Shear Strength | 275 MPa |
| Number of Pieces | 84 |
| Set Name | Assortment Kit |
| Manufacturer | Rustark |
| Product Dimensions | 4.96 x 2.56 x 0.87 inches |
| Item Weight | 5.6 ounces |
| ASIN | B07Y32V7KK |
| Item model number | R-YT84 |
| Date First Available | September 19, 2019 |
L**.
SST SCREW
Had a project using these screws. Worked just fine. SST should last long time.
M**Z
Buen vendedor AAA+++
Muy útil, gracias
L**S
Excencial
Este producto me callo del cielo excelente
A**O
very useful, but the tools needed to use these must be purchased separately
You need a tool that looks like a screwdriver but with a slot in the end, to turn the little springs and "screw" them into the holes. Also you need drill bits and tap wrenches (though in some cases you can get by without). The springs themselves are decent quality, just make sure you get the tools.
J**Y
Good
Good
R**D
Heli coils
Just what I needed to repair threads on my projects. And yes I love projecting on government projects. 1 day I might decided to patent some of my inventions.
J**O
Good
Good
J**S
Doesn’t come with tool to insert
Quality seems good, worked as needed for me. Doesn’t come with tool to install insert so if you don’t have a tool to install you might want to consider buying a kit the comes with the tool.
Trustpilot
1 month ago
1 month ago