Product Features
Specification: Tr12×2‑7H‑3‑LH
- Tr = Trapezoidal thread; 3 = 3‑start multi‑thread; LH = Left‑hand thread
- Dual‑end plug gauge combining GO (T) and NOT‑GO (Z) ends; material: GCr15; precision heat‑treated for stable accuracy.
- Non‑standard challenges: Combined features of multi‑start, left‑hand and trapezoidal thread. This is a non‑conventional standard gauge with no off‑the‑shelf stock. Separate process programming, thread profile grinding and left‑hand thread calibration are required.
Customization Capability
We accept custom orders for various non‑standard thread gauges upon provision of any of the key thread parameters below:
✅ Thread types: Trapezoidal Tr, Metric M, UN/UNF American threads, Pipe thread G, NPT, Buttress thread, Circular arc thread, Tapping screw thread, etc.
✅ Key dimensions: Major diameter, pitch diameter, minor diameter, pitch / lead, number of starts (single‑start / multi‑start)
✅ Special requirements: Left‑hand thread, special thread‑form angle, non‑standard tolerance grade, extended / shortened handle, special surface treatment
Customizable products: Full range of thread‑testing measuring tools including thread plug gauges, thread ring gauges, thread snap gauges, depth‑type thread gauges, thread perpendicularity gauges, etc.
