This specification establishes the requirements for single-component anaerobic adhesives suitable for locking, sealing, and retaining threaded or cylindrical assemblies. It is intended to be a means of classifying the adhesives, and does not address engineering design purposes. The adhesives are cured to a solid state when confined between closely fitting active metal surfaces. Materials shall undergo test procedures and conform accordingly to the following requirements: ultraviolet fluorescence; color and workmanship; flash point; storage stability; toxicity; solvent resistance; hot strength; heat aging; cold strength; lubricity; fluid tightness; wicking; viscosity; speed of cure; prevailing torque strength (strength at standard conditions); and qualification of primers.