Two dominant standards govern safety and tactical footwear globally: ASTM F2413 (North American) and EN ISO 20345 (European/International). Understanding which applies to your procurement context prevents specification errors and supplier qualification issues.
ASTM F2413
Published by ASTM International, this standard applies primarily to the US and Canadian markets. It defines impact and compression resistance ratings (I/75, C/75) and includes toe protection, metatarsal protection, and electrical hazard ratings.
EN ISO 20345
The European standard classifies footwear into S1–S5 categories based on cumulative protection features. S3 is the most common specification for military and tactical procurement in NATO-aligned countries.
Which to Specify
If your institution operates under NATO standards or procures for European or Middle Eastern forces, EN ISO 20345 S3 is typically the baseline. For US DOD or allied programs, ASTM F2413 with relevant addenda applies.
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