Standards February 2026 · TacticalSource Team

ASTM F2413 vs EN ISO 20345: Which Applies to Your Procurement?

Understanding the difference between ASTM F2413 and EN ISO 20345 is essential when specifying tactical footwear for institutional orders. Here is a practical comparison for procurement officers.

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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