Reference Library
Reliable places to start
Selected third-party sources for codes, standards, measurement, safety, materials, and everyday engineering reference.
ASME Codes & Standards
Consensus standards for mechanical systems, components, equipment, and performance testing.
American Society of Mechanical Engineers ↗NIST Dimensional Metrology
Dimensional measurement research, calibration services, and traceability resources.
National Institute of Standards and Technology ↗OSHA Machinery & Machine Guarding
Federal workplace requirements for machine guards and mechanical power-transmission equipment.
Occupational Safety and Health Administration ↗MatWeb Material Property Data
Data sheets for metals, plastics, ceramics, and composites used in engineering decisions.
MatWeb, LLC ↗Engineering ToolBox
Calculators, unit converters, and technical data for common design applications.
Engineering ToolBox ↗Machinery’s Handbook
A principal reference for machining, fasteners, threads, tolerances, and manufacturing practice.
Industrial Press ↗External references are provided for convenience. Standards, requirements, and guidance may change; confirm the current edition and applicability for your work.