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Dome Nut Covers V2 | Perfect Fit (M3-M16)

Protective dome caps for hex nuts (M3-M16). Updated V2 design with optimized tolerances for a perfect snap-fit.
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updated January 15, 2026

Description

PDF

This is the V2 (Version 2) update of my decorative nut covers. Based on feedback and testing, I have re-engineered the internal tolerances to ensure a perfect friction fit.

These caps snap securely onto standard metric hex nuts, covering sharp bolt threads and rusty metal surfaces. They are essential for baby-proofing furniture or simply adding a clean, finished look to your projects.

The Set Includes (Standard Metric Hex Sizes):

  • Small: M3, M4, M5

  • Medium: M6, M8, M10

  • Large: M12, M14, M16

Why print V2?

  • Better Fit: No more loose caps falling off or tight caps cracking during installation.

  • Safety: Covers exposed bolt ends to prevent scratches or snags.

  • Clean Aesthetic: Smooth dome geometry hides ugly hardware.

Printing Instructions:

  • Orientation: Print flat on the hex opening (upside down).

  • Supports: None required.

  • Material: PLA works great. PETG/ASA for outdoor use. TPU is fantastic if you want a rubbery, unbreakable bumper.

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Model origin

The author marked this model as their own original creation.

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