When sourcing safety glasses for automotive industry applications, understanding certification standards is not optional—it's a legal and safety requirement. The automotive sector involves multiple eye hazard scenarios: flying particles from grinding and cutting, chemical splashes from solvents and cleaners, UV radiation from welding, and dust from assembly operations. Each scenario requires specific protection levels defined by regional standards.
ANSI/ISEA Z87.1-2025 (United States) is the current standard for eye and face protection in North America. Released in January 2026, this standard defines testing requirements for high velocity and high mass impact resistance. The key marking system includes Z87 for basic impact protection and Z87+ for high impact protection, which requires passing a 150 fps steel ball test (0.25 oz) [1]. Additional markings indicate specific protections: U for UV filtering, R for infrared protection, L for visible light filtering, and D for splash/droplet protection [1].
EN166 → EN ISO 16321-1:2022+A1:2025 (Europe) represents a major transition. EN166:2001 is being replaced effective November 11, 2025, with a transition period allowing both standards until November 2025 [2]. The new EN ISO 16321 standard brings international harmonization, updated testing methods, and clearer labeling requirements. Marking codes include optical class (1-3), mechanical strength (S/F/B/A/T), and special protections (K for scratch resistance, N for anti-fog) [2].
EN166 is being replaced by EN ISO 16321-1:2022+A1:2025 from November 2025. The new standard modernizes requirements for diverse user needs and incorporates technological advances in eye protection [2].
For Southeast Asian exporters selling on Alibaba.com, understanding both standards is essential because automotive buyers may source from multiple regions. A supplier in Thailand might sell to a US-based automotive plant requiring ANSI Z87.1+ certification, while also supplying to a European facility needing EN ISO 16321 compliance. This dual-certification approach expands market access but requires rigorous testing and documentation.

