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M12 Bolt 3D Models: STL Files for Bolts and Nuts

Search results for M12 bolts cover single bolts with matching nuts, metric sets in several sizes, hollow bolts and head caps. The files are made for 3D printing, so a missing fastener can be replaced or scaled without modelling it from scratch. Check the thread pitch and the dimensions on each model page before you print. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

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選定基準：Polyzon編集部 · 本文の更新日：2026年10月13日

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«M12 Bolt 3D Models: STL Files for Bolts and Nuts»

The results mix single M12 bolts with their nuts, sets that run across several metric sizes, hollow bolts with a bore through the middle, and caps that sit over a hex head. A single bolt and a hollow version differ in use: one stands in for a standard fastener, the other lets a tube, cable or threaded rod pass through. Sets and sorters keep a range of sizes in one place, while caps are usually printed in a softer material.

Before printing, read the model page for thread pitch, head shape and overall length, since an M12 thread comes in coarse and fine variants and a scaled part will not match a real nut. Look at the number of parts and whether the author shows them assembled, and note the material and settings listed for the thread. Photos of real prints help judge how the thread came out on a given nozzle.

If the results feel too narrow, try related terms: hex bolt, socket head cap screw, nut, washer, thread insert, or the size written out as M12x1.75. Searching by a size range, such as M8 to M12, brings up sets and sorters, and words like hollow, cap or insert lead to the more specialised parts. Combining a size with a use, for example a bolt for a tube or a knob insert, narrows the list further.

FAQ

よくある質問

What thread pitch does an M12 bolt use?
A standard coarse M12 thread has a pitch of 1.75 mm, and fine versions exist at 1.5 mm and 1.25 mm. The pitch decides whether a printed bolt matches a metal nut, so check it on the model page.
Can a 3D-printed M12 bolt replace a metal one?
For light loads and non-critical joints a printed bolt can work, but plastic threads are weaker than steel and wear faster when tightened repeatedly. Check the material and settings the author lists.
Why do hollow M12 bolts appear in the results?
A hollow bolt has a bore through its axis, so a tube, cable or threaded rod can pass through it. These models often come with a matching nut and are used for cable routing or coil forms.
How do I find a bolt in another size?
Search for the size directly, such as M8 or M10, or for a range like M6 to M12 to find sets and sorters. Many authors publish the same part across several metric sizes.
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