Thread Gauge

Thread Gauge is a practical tool for identifying external threaded fasteners. It helps you determine the exact size and standard of a bolt using specific measurements. You can quickly check if a thread is metric, Unified, or Whitworth. To identify a bolt, enter the measurement across the crests and the pitch gauge reading. The app displays a card with the name of the thread standard. It also explains why similar-looking threads are not compatible. This includes details on how pitch differences accumulate over multiple turns. If two threads have the same diameter and pitch, the app helps you distinguish them by angle. It visualizes 60-degree and 55-degree profiles side by side. The text explains the visual differences between rounded and sharp crests. You can also check the fit between a thread and its look-alike. The app calculates the offset after ten turns to show potential binding issues. This helps you understand why a near-miss thread might jam before seating properly. The full library of 51 threads is grouped by nominal size. Metric and inch standards are arranged together for easy comparison. Each thread is shown as a 10 mm profile strip on a single scale. You can organize your sorted bolts into virtual tins. Record details like length, head type, and repair café origin for each item. The app groups these items by location and standard, and allows you to review saved readings. Based on ISO 261, ASME B1.1, and BS 84, all content is included in the app and works completely offline. With Thread Gauge, your saved bolt data and sorting progress are stored only on your device, with no registration or cloud synchronization required.