Bridge Engineering Resource Centre

Metric, BSP and NPT Thread Guide

A straightforward guide to measuring and distinguishing common industrial thread forms.

General guidance

This Resource Centre provides general guidance only. Always follow the equipment manufacturer’s instructions, the product technical data sheet and your site’s safe system of work. Isolate stored energy before maintenance. For safety-critical, regulated or uncertain applications, ask a competent engineer or the product manufacturer to confirm the specification.

A straightforward guide to measuring and distinguishing common industrial thread forms.

For product-specific, safety-critical or application-critical decisions, contact Bridge Engineering with the operating conditions and relevant technical documentation.

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