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The American Society of Agricultural and Biological Engineers (ASABE) has revised the adoption of ANSI/ASABE AD5674:2024 OCT2025 Tractors and machinery for agricultural and forestry — Guards for power take-off (PTO) drive shafts — Strength and wear tests and acceptance criteria.

The updated adoption with deviations aligns the standard with the latest edition of the basis ISO document. Notably, the revision expands coverage to include Type 4 PTO drive shafts, reflecting continued advancements in safety and performance testing for agricultural and forestry machinery. The deviations incorporate updated normative references.

The adoption will further harmonize national and international standardization, a goal that facilitates manufacturing, safety advancements, and product marketing worldwide.

ASABE members with standards access and those with site-license privileges can access the full-text via electronic download on the ASABE online Technical Library at . Others can obtain a download for a fee directly from the library or by contacting ASABE headquarters at OrderStandard@asabe.org.

ASABE is recognized worldwide as a standards-developing organization for food, agricultural, and biological systems, with more than 280 standards currently in publication. Conformance to ASABE standards is voluntary, except where required by state, provincial, or other governmental requirements, and the documents are developed by consensus in accordance with procedures approved by the American National Standards Institute.

For information on this or any other ASABE standard, contact Scott Cedarquist at 269-932-7031, cedarq@asabe.org. A current listing of all ASABE standards projects can be found on the ASABE web site at .

ASABE is an international scientific and educational organization dedicated to the advancement of engineering applicable to agricultural, food, and biological systems. Further information on the Society can be obtained by contacting ASABE at (269) 429-0300, emailing hq@asabe.org or visiting .