Thread Size Cross-Reference
Look up thread sizes across ISO Metric, BSP, and NPT. Auto-detects the system, validates designations, shows nearest equivalents.
What this tool checks
Checks
- ✓ Thread system auto-detection (ISO Metric, BSP, NPT)
- ✓ Whether the designation matches a standard size
- ✓ Major diameter and pitch/TPI for the matched size
- ✓ Cross-references to nearest sizes in other systems
- ✓ Suggestion of nearest valid size for non-standard input
Does not check
- ✗ Thread tolerance classes or fit (6g/6H, Class 1/2/3)
- ✗ Left-hand thread designation (LH)
- ✗ Actual interchangeability between systems
- ✗ UNC, UNF, or other ANSI unified thread series
- ✗ Thread length, engagement depth, or torque specs
Mixed thread designations breaking search and matching?
Rastro's thread AI agent normalizes metric, BSP, and NPT notations, cross references equivalents, and cleans up inconsistent supplier data in bulk.
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