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Metric Hex Jam Nut – DIN 439B

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Metric Hex Jam Nut

Metric hex jam nuts are a thin low-profile nut, about 1/2 the size of a normal nut and are often called lock nuts. Due to their thin structure, they are commonly used in applications where space is an issue when threading onto a bolt. The Metric hex jam nut is available in chamfered (DIN 439B) or unchamfered (DIN 439A) as well as both left and right handed threads. They are also available in a variety of finishes such as Black, Plain, Zinc Plated, Yellow-Zinc Plated, and Stainless Steel.

Metric Hex Jam Nut Specifications

DIN 439B    Zinc    Steel 4 / 0,5d


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