Steel Pipes & Fittings

Hollow Thread Bar, Double End Hybtid Bolt/Collar/Nut

    Body: Hardened by heat treatment.


    Surface: Nitriding solution to increase the surface hardness


    Grade: 4140 or any othet grade

Product Detail

SMC are supplying different kinds of components for grounding system for underground mining and tunnelling industries.

The parts can be heat treated to increase the hardness, and also by different kinds of surface treatment. Like nitriding to increase the surface hardness to increase the life time for all the wearing parts.


  • Sizes can be customized

    Body: Hardened by heat treatment.

    Surface: Nitriding solution to increase the surface hardness

    Grade: 4140 or any othet grade

    Body hardness: hardened as per customer demand

    Surface hardness: Nitirding as per customer demand.

    OD & ID: customized



  • Packaging of Hollow Thread Bar:


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