M4 SUPER BOLT with nut and perfect fit

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M4 Hex Socket Bolt (H3) & Matching Nut – High Strength, High Precision

This project features a high-precision M4 bolt with a hex socket head (H3 / 3 mm Allen drive), designed for reliable fastening and clean mechanical assemblies.

The internal hex drive (H3) fits standard 3 mm Allen keys, making it ideal for functional parts, prototypes, and mechanical builds where compact hardware is required.

The bolt is available in the following lengths:
10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, and 150 mm, all with a consistent M4 diameter.

A perfectly matching M4 nut is included and optimized to fit smoothly on the threads while maintaining a secure and stable connection.

 

 

Print Settings & Strength

• 100% infill for maximum strength and durability
  → Much stronger than typical prints using 15–20% infill
• 0.1 mm layer height for extremely high precision
  → Clean threads and excellent nut compatibility
• Optimized tolerances for smooth assembly

 

Highlights

• M4 bolt with hex socket head (H3 / 3 mm Allen)
• Multiple length options
• Matching nut included
• Very strong due to 100% infill
• High precision thanks to 0.1 mm layer height
• Ideal for functional prints and mechanical projects

Perfect for makers who need precise, strong, and reliable printable fasteners for real-world applications. 🔩