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This ARP 3/8-16 12-point nut kit provides 3/8-16 12pt nuts for engine or mechanical fastening where a 12-point profile is preferred. Offered as a dedicated hardware kit, it supplies the correct nut geometry for assemblies that require compact socket access while maintaining proper thread fit. Use it when replacing or servicing 3/8-16 fasteners in engine-related or general applications.
ARP 3/8-16 12pt nut kit
