1 / 6HELIFOUNER M3x6x5 Brass Threaded Inserts, 100 Pieces
M3x6x5 Pieces: HELIFOUNER brass threaded inserts are a 100-piece set sized for M3 hardware and intended for embedding in plastic parts. The listing describes installation by heat or ultrasonic methods, or incorporation during injection molding, so this set suits projects that already use those processes.
At a glance
- Set of 100 brass female knurled inserts for plastic components.
- M3-0.5 thread and M3x6x5 size name are specified in the listing.
- The manufacturer describes heat or ultrasonic installation and injection molding use.
Reference price: $7.99
Price checked: Nov 12, 2026
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Pros and cons
Pros
- A 100-piece quantity is suitable for repeated use in projects using the same insert size.
- Brass inserts provide a threaded metal interface intended for embedding in plastic parts.
Technical specifications
9 specifications| Brand | HELIFOUNER |
|---|---|
| Model | HELIFOUNER-Brass-Nut-Inserts |
| Material listed | Brass |
|---|---|
| Fastener type | Insert |
| Thread coverage | Fully Threaded |
| Drive style | Spline |
| Thread size | M3-0.5 |
|---|---|
| Size name | M3x6x5 |
| Pieces | 100 |
What to know before buying
- The listing describes installation by heat or ultrasonic methods, or molding in during injection. It warns not to insert bolts before the plastic has fully cooled, as parts may loosen. Keep these small parts away from children.
Who is it for?
A good fit for
- 3D-printing projects requiring M3 threaded inserts in plastic parts.
- Plastic-part fabrication by heat or ultrasonic installation, or injection molding.
Less suited to
- Projects needing a thread size other than M3-0.5 or inserts for materials and installation methods not covered by the listing.
Customer reviews on Amazon
- 5 stars
77% 77% - 4 stars
14% 14% - 3 stars
6% 6% - 2 stars
1% 1% - 1 star
2% 2%
Aggregate ratings are mostly five-star, with a smaller spread across lower star categories. This is a generally favorable rating pattern, but it does not identify specific strengths, complaints or performance reasons. Buyers should judge fit and installation suitability against the listed M3-0.5 size and their plastic-part process.
Frequently asked questions
What thread size is listed?
The listing specifies M3-0.5 thread size and gives the size name as M3x6x5.
How does the listing say these inserts can be installed?
It describes installation by heat or ultrasonic methods into a tapered hole, or molding them in during injection. It advises waiting until the plastic has fully cooled before screwing in bolts.
How many inserts are included?
The listing states 100 pieces of M3x6x5 female knurled brass inserts.
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