

🧩 Unlock flawless fastening with Rustark’s ultimate brass insert arsenal!
The Rustark 330-piece brass knurled threaded insert kit offers four common metric sizes (M2, M3, M4, M5) housed in a durable transparent box. Crafted from high-quality brass, these inserts provide strong tolerance and long-lasting performance, ideal for electronics, 3D printing, and plastic assembly applications. Backed by responsive customer service and a 90-day return policy, this kit is a must-have for professionals seeking reliable, versatile fastening solutions.
| ASIN | B07KS8KZRW |
| Best Sellers Rank | #417,197 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #691 in Nut Inserts |
| Date First Available | November 22, 2018 |
| Fastener Type | Female Threaded |
| Finish Type | Brass |
| Head Style | Knurled |
| Is Discontinued By Manufacturer | No |
| Item Diameter | 2 Millimeters |
| Item Weight | 7.4 ounces |
| Item model number | R-c-330 |
| Manufacturer | Rustark |
| Number of Pieces | 330 |
| Thread Size | M 2,M 3,M 4,M 5 |
| UPC | 799862355112 |
N**N
Variety
Just what was needed
C**S
Great for 3d prints
Great for heating up and putting into 3d prints! Lots of size variations
T**S
Injection moulding only
The product description states "...it can be mounted into the taper hole by ultrasonic or heat..." However this style of insert is only suitable for injection moulding - when inserting into thermoplastic after forming, the large knurls on each side leave a void. You want something which will grip the whole way along the side. A screw into these is weaker than a screw straight into plastic.
G**G
As described
Exactly what I needed to finish a product all sizes matched and are good quality
J**T
Plenty of options, just what I needed to kick off my insert collection.
E**7
Parfait
A**6
Prodotti di ottima fattura. Consiglio
K**R
Product was as advertised and processing and delivery was fast.
Trustpilot
2 days ago
1 day ago