Category SAE Standards

Coolant filters play a critical role in protecting engine cooling systems from contaminants. To ensure consistent evaluation across different filter designs, SAE J2709 provides a uniform test procedure that defines test conditions, measurement methods, and performance criteria. Originally issued in…

SAE J2704-2018 is a stabilized recommended practice that defines a test method for determining the vertical force and deflection properties of non-rolling tires, along with the associated contact patch length and width. This guide provides an overview of the standard,…

The SAE J2705 recommended practice defines a method for measuring how a non-rolling tire deforms over triangular or step cleats under quasi-static loading. This test provides critical data—normal force (FZ), longitudinal force (FX), and vertical deflection (δZ)—for developing road load…

The SAE J2696-2019 Recommended Practice defines the critical interface dimensions between inboard mounted disc brake rotors and disc wheel hubs for Class 5–8 commercial vehicles. By specifying standardized mounting systems and tolerances, the standard ensures interchangeability across manufacturers and helps…

The SAE J2697 Recommended Practice provides comprehensive guidelines for power inverters installed in Class Eight trucks and buses. It addresses everything from general application considerations to electrical performance and safety features, ensuring reliable operation of auxiliary AC loads from the…

SAE J2698-2022 provides essential guidance for engineers designing primary 120 VAC wiring distribution systems in trucks, buses, and other surface vehicles. This recommended practice focuses on systems supporting sleeper cab hotel loads—such as microwaves, televisions, and battery chargers—that operate when…

The SAE J2691-2020 standard establishes minimum construction and performance requirements for a 15 pole connector between towing vehicles and trailers, designed for 12 VDC nominal applications. It supersedes J2691 APR2018 and is aligned with SAE J2742 for connecting cable requirements.…

The SAE J2694-2025 standard defines a recommended practice for evaluating the adhesive bond strength and bond coverage of anti-noise shims attached to disc brake pads. As a critical quality tool 🛠️, the T-pull test ensures consistent adhesion in both development…

Refrigerant Purity and Contaminant Limits SAE J2683 sets forth the required purity and maximum contaminant levels for carbon dioxide (R-744) used in mobile air conditioning systems. The table below summarizes the key limits. Component Limit Purity (CO2) ≥ 99.9 vol%…

SAE J268 is a recommended practice that provides specifications for rear view mirror systems on motorcycles to ensure the operator has a clear and adequate view of the road behind. It supplements federal regulations such as 49 CFR 571.111 and…