Jam Nuts & Heavy Hex Jam Nuts | AFT Fasteners

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Jam Nuts

Jam nuts are a six-sided internally threaded fastener which is only 2/3 the thickness of a full form nut. Heavy hex jam nuts are a six-sided internally threaded fastener which is only 2/3 the thickness of a heavy hex nut. The thinner pattern is sometimes used as a second nut to 'jam' another nut in place preventing loosening or when a low profile is needed.

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