The SAE J370 standard, originally issued in 1968 and cancelled in April 2006, prescribed a set of preferred bolt and capscrew diameters for use in construction and industrial machinery. The goal was to improve serviceability by encouraging designers to choose…

The latest revision of SAE J371 (January 2025) provides a recommended practice for standardizing drain, fill, and level plugs used in off-road, self-propelled work machines. Published by SAE International, this standard aims to reduce the variety of plug types and…

Purpose and Scope SAE J361-2022 is a recommended practice that specifies procedures for the visual evaluation of color and appearance of interior and exterior automotive trim parts and materials. It applies to opaque or nearly opaque materials such as topcoat…

This standard provides a repeatable method for evaluating how well trim materials resist scuffing, essential for maintaining appearance in automotive interiors. Using a Taber rotary platform abraser with a specialized scuff fixture, J365 applies controlled wear under defined conditions. This…

The SAE Information Report J357-2016 serves as a vital reference for engineers and maintenance professionals involved in the design, operation, and upkeep of internal combustion engines. It consolidates the essential physical and chemical properties of both new and used engine…

Nondestructive testing (NDT) is essential for ensuring the quality and reliability of surface vehicle components without causing damage. The SAE J358-2017 standard provides a comprehensive overview of various NDT methods, their principles, applications, and limitations. This article summarizes the key…

SAE J360 establishes a uniform procedure for determining the grade parking performance of heavy vehicles, including trucks, buses, and truck-tractors with a GVWR over 4536 kg (10,000 lb). This recommended practice is essential for ensuring that parking brake systems can…

Overview and Scope SAE J351-1998 is a recommended practice that defines the physical and chemical requirements for oil-tempered carbon-steel wire used to manufacture engine valve springs and other springs demanding high fatigue resistance. Although the standard was canceled in June…

The SAE J356-2019 standard defines requirements for normalized electric-resistance welded (ERW) flash-controlled low-carbon steel tubing. This tubing is designed for pressure lines and applications that demand reliable performance in bending, double flaring, beading, forming, and brazing. Understanding this standard is…

Overview of SAE J347 🛠️ SAE J347 is a surface vehicle standard that specifies the dimensional requirements necessary for the mounting and interchangeability of a clamp-mounted fuel injector used in diesel engines. It covers type 7 injectors with a nominal…

The SAE J348-2020 standard provides essential guidelines for designing and testing wheel chocks for heavy vehicles. This stabilized standard covers two design methods—equilibrium and energy consideration—along with test conditions and specific design criteria. Understanding these requirements is critical for engineers…

The SAE J35 standard (cancelled in 2002) remains a foundational reference for measuring transient smoke emissions from vehicular diesel engines. It defines a dynamometer-based test procedure, equipment requirements, and data analysis methods. This article distills key engineering takeaways from the…

The SAE J342-2020 standard, titled Spark Arrester Test Procedure for Large Size Engines, defines a formal method for assessing the performance of spark arresters on large engine exhaust systems. Originally issued in 1968 and stabilized in 2020, this recommended practice…

The SAE J343 standard provides a comprehensive set of test methods for evaluating the performance of SAE 100R series hydraulic hose and hose assemblies used in fluid power systems. Aligned with ISO 6605 and tailored for the SAE 100R series,…

SAE J335 is a recommended practice that establishes test methods for evaluating the performance of spark arrester exhaust systems on multiposition small engines (MSEs) used in portable applications. These engines, found in chainsaws, weed trimmers, brush cutters, and backpack blowers,…

SAE J336 provides a standardized approach for measuring and evaluating sound levels inside truck cabs. Originally issued in 1968 and stabilized in 2011, this recommended practice remains a key reference for vehicle acoustics. Although no longer actively maintained, it continues…

SAE J34-2018 establishes a standardized procedure for measuring the maximum exterior sound level of recreational motorboats under various operating conditions. This recommended practice is essential for manufacturers, regulators, and test laboratories conducting type testing for certification or monitoring tests for…