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HOLMOL Threaded Inserts provide a practical hardware kit for plastic assemblies, supplying reliable threaded brass inserts for stronger connections. Hobbyists and 3D-printing enthusiasts gain neat, durable threads that survive repeated assembly and disassembly. Is the 360-piece assortment the right fit for your workshop needs?
⚡ At a Glance
- • Holding Strength: Knurled brass anchors into plastic to resist rotation and pull-out
- • Best for: 3D printers and general plastic assemblies
- • Not ideal for: Non-plastic materials or applications requiring tapped metal threads
Contains 360 knurled brass inserts in metric sizes M2–M6 for versatile repair and assembly. Heat-embedding simplifies installation while knurled profiles reduce thread slipping and loosening.
Secure, long-lasting joints – thanks to knurled brass inserts
Knurling on each insert forms a mechanical interlock with surrounding plastic when heat-set, creating friction and a press-fit that resists rotation and pull-out.
Stronger threads let fasteners be removed and refitted without degrading the plastic, extending component life and reducing stripped holes.
Wide size coverage – with a 360-piece metric assortment
Kit includes M2, M2.5, M3, M4, M5 and M6 knurled inserts, supplied in quantity to cover common screw sizes used in small assemblies and 3D-printed parts.
Handy selection reduces the need for ad-hoc purchases and suits a broad range of repair and prototyping tasks.
Quick, tidy installation – with heat-set embedding
Heating an insert and pressing it into place softens the surrounding plastic slightly so material flows around the knurling, creating a neat bonded seat without tapping.
Professional-looking assemblies are achievable on hobby projects and small repairs with minimal finishing work.
✨ The 4 Key Reasons for HOLMOL Threaded Inserts
- Corrosion-resistant brass – Ensures long-term reliability in humid or workshop conditions
- Precision knurling – Prevents thread loosening under repeated screw cycles
- Heat-set installation – Achieves firm seating without complex machining or tapping
- 360-piece assortment – Supplies plenty of inserts to cover multiple repairs and prototypes
📋 Technical Details at a Glance
- Material: Brass
- Assortment size: 360 pieces
- Metric sizes included: M2, M2.5, M3, M4, M5, M6
- Type: Knurled threaded inserts
- Installation method: Heat-set embedding
❓ Frequently Asked Questions
Q: Are these inserts suitable for 3D-printed parts?
A: Inserts are suitable for 3D printers and plastic assemblies, as specified in the product description.
Q: Which sizes are included in the kit?
A: The assortment contains metric sizes M2, M2.5, M3, M4, M5 and M6, totalling 360 pieces.
Q: How are the inserts installed?
A: Embedding with heat simplifies installation, allowing the insert to be heated and pressed into plastic to form a secure seat.
🏆 Our Verdict
The HOLMOL Threaded Inserts are ideal for DIYers and hobbyists who repair or reinforce 3D-printed parts and plastic assemblies. A comprehensive 360-piece set of knurled, corrosion-resistant brass inserts allows secure threads and neat heat-set installation. Practical long-term value comes from avoiding repeated repairs and preserving plastic parts against stripped screw holes.
