HeliCoil R1185-5 5/16-18 Inch Thread Repair Inserts 12pk

Internal Thread Size: 5/16"-18. Thread Type: UNC (Unified National Coarse). Thread Direction: Right Hand. Thread Size: 5/16"-18 UNC. Insert Size: 5/16"-18 UNC. Rockwell Hardness: C43-C50.

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