Workshop hardware for secure threaded connections, supplying a broad assortment of brass inserts for plastics and 3D-printed parts. The INCLY Threaded Inserts Set brings 440 knurled female threads across multiple sizes, plus an adapter and tweezers, aimed at makers and repairers who need reliable joins. Will the brass construction and knurled design deliver the grip and longevity required for repeated assembly?
⚡ At a Glance
- • Torque Resistance: Knurled outer profile bites into plastic after thermal insertion for strong tightening force
- • Best for: Makers, repair technicians and hobbyists fitting metal threads into plastic or 3D prints
- • Not ideal for: Metal-to-metal threaded joints or applications where heat/ultrasonic insertion is impossible
A 440-piece assortment of knurled brass female-thread inserts covering M2 to M6 sizes, plus one adapter and tweezers. Designed for thermal or ultrasonic embedding into a wide range of plastic and 3D-printed components.
Secure, high-torque connections - with knurled brass exterior
Exterior knurling creates embossing into surrounding plastic during thermal insertion, producing friction and mechanical bite that resists rotation. The knurl pattern increases surface area contact between insert and host material.
Greater resistance to loosening under load, so fastened parts stay tight through repeated assembly and disassembly.
Durable and stable threads - thanks to high-quality brass material
Brass offers good thermal conductivity and natural resistance to oxidation, making the internal threads dimensionally stable after installation. The metal threads maintain integrity under standard tightening torque for common fasteners.
Cleaner, longer-lasting threads than tapped plastic alone, reducing wear and strip risk in repairs and prototypes.
Versatile sizing and tools - with a broad 440-piece assortment
Collection spans multiple M-series thread sizes across 18 size variants and includes one adapter plus tweezers to aid placement. Inserts suit a range of hole diameters and component thicknesses used in electronics and fixtures.
Helps avoid multiple separate purchases and lets users match insert size to 3D prints, housings or consumer parts quickly.
✨ The 4 Key Reasons for INCLY Threaded Inserts Set
- 440-piece kit - Includes a large quantity to cover many repair and prototyping projects
- Brass construction - Resists oxidation and tolerates heat during thermal installation
- Knurled exterior - Bites into plastic to reduce thread loosening under torque
- Installation tools included - Adapter and tweezers speed accurate placement and insertion
📋 Technical Details at a Glance
- Category: Threaded brass heat inserts for plastic and 3D printing
- Quantity: 440 pieces
- Sizes included: M2, M2.5, M3, M4, M5, M6 across 18 size variants
- Material: Brass
- Surface treatment: Anti-oxidation properties stated
❓ Frequently Asked Questions
Q: Are these inserts suitable for 3D-printed parts?
A: Yes. Inserts are designed to be embedded into 3D-printed and other plastic parts using heat or ultrasonic methods, creating a reliable internal thread.
Q: What sizes are included in the kit?
A: The set contains 440 knurled female-thread inserts across M2, M2.5, M3, M4, M5 and M6 sizes in 18 variants, plus one adapter and tweezers.
Q: How should inserts be installed?
A: Installation can be performed by thermal insertion, ultrasonic embedding or by injecting the insert into plastic parts so that it forms a secure internal thread.
🏆 Our Verdict
The INCLY Threaded Inserts Set suits makers and repair technicians who need durable, repeatable metal threads inside plastic and 3D-printed parts. Knurled brass inserts and included placement tools make for secure grip and straightforward thermal or ultrasonic installation. A comprehensive assortment that represents good long-term value for frequent prototyping and repair work.
