Best Screw & Bolt Assortment Sets for 3D Printing Projects (2026)
We ranked sets by compatibility with common 3D printer thread sizes, completeness (bolts plus nuts and washers), user ratings, and overall value across the metric ranges offered
This roundup covers screw and bolt assortment sets suited for 3D printing projects, emphasizing metric fasteners, flange bolts, and included nuts and washers that match common printer frames, mounts, and hardware mods. Selections were chosen for fit with typical 3D printer hardware sizes (M4–M12), component completeness, and overall value based on product specs and user ratings
Top Picks
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1
Kadrick metric flange bolt set 700Pcs M6-M10
Comprehensive set of flange bolts, nuts, and washers totaling 700 pieces in metric sizes. Includes 175 bolts, 175 nuts, and 175 washers per size group, with black zinc plating for durability. Customers note good quality and handy case, with some mixed feedback on quantity
- comprehensive 700-piece set
- metric M6-M10 range
- case for organization
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2
M6-M12 metric bolts and nuts set with washers
Metric bolts and nuts assortment with M6 to M12 threads and washers. Includes variety of lengths and a universal socket tool for quick fittings. Customers note high quality and good value for a range of projects
- wide size range
- quality construction
- includes necessary hardware
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3
Mywish metric bolt assortment kit (M4–M8) with nuts and washers
Metric bolt assortment kit with bolts, nuts, and washers in sizes M4–M8. Includes varied threads and stainless steel construction for durability; users note its usefulness for 3D printing projects and value for money
- variety of metric sizes
- nuts and washers included
- durable metal construction