FAQs

Thread length variants

• Are there different tolerances for custom thread lengths?

  No. Custom thread lengths follow the same dimensional tolerances as our standard stud and collar products. This ensures consistent fit, function, and installation performance.

• Can I request a thread length outside the minimum or maximum values?

  No. These limits reflect manufacturing capability. If your design requires something different, we can help you find the closest viable alternative.

• Does changing the thread length affect the performance of the bigHead?

  No. Loadability and material properties remain unchanged. A longer or shorter thread only affects the screw engagement you can achieve during assembly.

• Does custom thread length affect lead time or minimum order quantities?

  Depending on the length selected, it may do. We’ll confirm this when quoting your specification.

• How do I select the correct screw length for an internally threaded collar?

  For sighted collars: screw engagement ≈ collar length.

  For blind collars: allow clearance (Lu) to avoid screw‑end contact. So Le = L – Lu

  If you’re unsure, see our guide to screw thread length selection, or get in touch.