M12 Bolt Knob – Square Head with Clip-On Cap
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Description
This model is a functional M12 bolt knob designed for easy hand tightening without tools, while also keeping the bolt head completely hidden.
The system combines a secure bolt holder with a rotating outer knob, allowing the bolt to be comfortably tightened or loosened by hand – similar to a standard thumb screw.
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🔧 How it works:
- The M12 square bolt is inserted into the inner housing
- The housing is placed inside a rotating outer knob
- A top snap-fit cap locks everything in place
- Internal side tabs secure the assembly, preventing the bolt from falling out
Once assembled, the whole unit functions as a hand-tightening knob, making it ideal for quick adjustments without tools.
⭐ Features:
- Works as a manual tightening knob (thumb screw style)
- Designed for M12 square bolts
- Snap-fit locking system – no screws or glue required
- Clean look – bolt head is fully hidden
- Secure internal retention with clip mechanism
- Reusable and easy to assemble/disassemble
🧱 Use cases:
- Adjustable constructions
- Furniture & fixtures
- DIY and workshop tools
- Anywhere you need quick hand tightening
License
You shall not share, sub-license, sell, rent, host, transfer, or distribute in any way the digital or 3D printed versions of this object, nor any other derivative work of this object in its digital or physical format (including - but not limited to - remixes of this object, and hosting on other digital platforms). The objects may not be used without permission in any way whatsoever in which you charge money, or collect fees.




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