Carmex Internal Right Hand Whitworth Thread Turning Insert 28 TPI / 16 IR 28 W P25C Disc Micrometer 25-50mm Range Series 3282-50 The Insize 4166-411 Metric Pin

The Insize 4166-411 Metric Pin Gage Set is designed for high-precision internal diameter measurements

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Heat Resistance: These inserts can handle temperatures up to 800°F

Carmex Internal Right Hand Whitworth Thread Turning Insert 28 TPI / 16 IR 28 W P25C Disc Micrometer 25-50mm Range Series 3282-50 The Insize 4166-411 Metric PinInternal Thread Turning Insert Whitworth 55 The Whitworth Internal Thread Turning Insert is engineered for the precision machining of British Standard threads, including BSW, BSF, BSP, and BSB. Designed for fine pitch 28 TPI threads, this full profile insert accurately forms the entire thread geometry crest, root, and flanks in a single pass. It is ideal for applications requiring high thread fidelity in small to medium bore components. Manufactured