Thread & Fastener Reference
| Thread | Major | Pitch/TPI | Tap drill | Clearance | Tensile area |
|---|
Metric in mm (ISO 261/262); Unified in inch (75% tap drill). Machinery's Handbook values.
Thread pull-out estimate
Required engagement
—
Strip load per mm
—
First-order estimate (constant engagement factor 0.75), not the full ASME B1.1 thread-shear integral.
Verify against Machinery's Handbook / ASME B1.1. A helper, not a substitute for engineering judgment.