Threads and Inserts Design Guide for Your Parts
Tell the supplier which fastener must fit, how much thread must engage and how the insert will be installed and checked.
Thread and insert callouts for your RFQ
| Feature | Example or input | What to verify |
|---|---|---|
| Metric thread | M6 × 1.0 | The 1.0 mm pitch matches the mating fastener. |
| Unified thread | 1/4–20 UNC | The fastener matches the diameter and threads per inch. |
| Blind tapped hole | Usable thread depth and available hole depth | Allow room for tool runout and avoid bottoming the fastener. |
| Threaded insert | Type, supplier part number and parent material | Confirm install depth, preparation hole and installation access. |
Use these examples to prepare your request. Confirm stock and acceptance criteria for your project.
Before you send your RFQ
- Mark through and blind holes and identify the required fit class when applicable.
- Check that the installed screw clears surrounding features and does not bottom out.
- Use the insert manufacturer’s instructions for hole preparation and installation. Agree on inspection after finishing where the coating can affect fit.
