Tech Tip: Onshape Standard Content Auto‑Size

Choosing the right hardware for a project can be a frustrating and time-consuming task. Imagine assembling a complex structure, only to realize that a misjudged bolt size has caused misalignment or interference, forcing you to start over.

Auto-Size in Onshape Standard Content removes the guesswork out of hardware selection, offering a solution to these common headaches. It doesn't work by magic, but follows three simple rules that make your inserts predictable and accurate. Master these, and you'll save time while avoiding surprises.

1. Hole Geometry: Auto‑Size Rounds Down (Bolts/Screws)

Auto-Size picks the nearest smaller bolt to prevent interference when you click a circular edge or cylindrical face of a hole. This ensures the hardware fits without causing interference.

The Measure tool is available in Part Studios and Assemblies, and can be used while working in section views to verify dimensions and clearances during placement – useful when the Standard Content dialog is open, and you’re checking hole depths/stack lengths.

2. Shaft/Post Geometry: Auto‑Size Rounds Up (Nuts)

When you select a shaft or a post (e.g., a bolt shank), Auto‑size chooses the nearest nut size by rounding up, which ensures the nut or washer will slip on smoothly without interference.

3. Use the Measure Tool for Quick Checks

The Measure tool is available in Part Studios and Assemblies, and can be used while working in section views to verify dimensions and clearances during placement – useful when the Standard Content dialog is open, and you’re checking hole depths or stack lengths.

Understanding these three tips makes hardware selection easier and more predictable. Auto‑Size simplifies sizing, and pairing it with the Measure tool helps you confirm fit before committing. These small steps keep your workflow efficient and reduce the chance of surprises.