INSIZE 7381-T28 measuring tips for screw thread micrometer, 10-7tpi Brand: INSIZE ID#: 7381-T28 |MFGID: 7381-T28 Your Price: $29.21 Quantity discounts available QuantityPrice Return Policy Qty -+ Add to Cart Request Info Questions?CallCall Us864.433.9771|Mon-Fri 8-5 EST Share Print Product Information Features • Whitworth thread (55° thread angle). • Pitch: 10-7 TPI• 55° thread angle