Description
Measuring insert for Whitworth threads, 55° flank angle is a thread micrometer accessory — either a setting ring (master gauge for zero-calibration of thread micrometers) or a measuring insert (the contact surface of the micrometer itself matched to the thread form). Both are essential for traceable thread pitch measurement on screws and nuts.
Setting rings are pre-cut threads at known pitch diameters — place it in the micrometer, zero it, then measure the workpiece thread. Measuring inserts have V-shaped or pointed contact surfaces that fit into the thread profile so the micrometer reads the pitch diameter directly. Hardened, ground surfaces; matched to specific thread pitch values.
Usage: for setting rings, place in the micrometer, read the zero value, adjust the micrometer if necessary; for measuring inserts, swap inserts to match the thread pitch and measure over the thread pitch line. Both require matching to a specific thread pitch and tolerance class.
Common applications: calibration of thread micrometers in calibration laboratories, traceable thread QC in manufacturing workshops, master-gauge-based zero verification chains, and educational applications for thread form instruction.
Features
- Measuring insert for Whitworth threads, 55° flank angle
- Hardened, ground reference surfaces for repeatable measurement
- Schut build quality
- Suitable for workshop QC, calibration labs and bench measurement applications
- ECONOMY LINE series
Specifications
| Manufacturer | Schut |
|---|---|
| Series | ECONOMY LINE |
| Type | Screw thread micrometers – Measuring inserts |
| Article number | 64-906730 |
Compatible accessories
Compatible accessories: Schut setting rings and reference standards for periodic verification of accuracy at known dimensions; calibration certificate (ISO 17025) at first delivery and periodic verification — typically 12-month interval for production floors, 6-month for high-volume chains; Schut protective cases and bench storage; Schut spare parts and consumables where applicable.
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