OSHA Standards 29 CFR 1910.241-244 OSHA Standards 29 CFR 1910.241-244 1910.241 - Definitions. OSHA Standards 29 CFR 1910.241-244 OSHA Standards 29 CFR 1910.241-244 1910.241 - Definitions 1910.241 - Definitions 1910.241 - Definitions. OSHA Standards 29 CFR 1910.241-244 1910.241 – Definitions. 29 CFR 1910.241 Standard 1910.241-244 Hand and Portable Powered Tools