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Metric Class 04 Hex Jam Nuts Din 439B Zinc Cr+3
Metric Class 04 Hex Jam Nuts manufactured to DIN 439B standards and finished with Zinc Cr+3 are thin, low-profile nuts designed for light-duty locking and adjustment applications. The Class 04 rating provides adequate strength for general-purpose fastening, while the Zinc Cr+3 coating offers clean appearance and dependable corrosion resistance.
These jam nuts are commonly paired with standard hex nuts to prevent loosening in assemblies subject to vibration or minor movement. Their reduced height makes them ideal for limited-space installations, precision adjustment, and secondary locking functions. With smooth threading and a protective zinc finish, they are a cost-effective choice for electrical equipment, light machinery, and general maintenance applications.
