The Coupling Nut joins two clamping studs end-to-end when your setup needs more vertical reach than a single stud provides. Common scenarios: tall workpieces, stacked step blocks, deep-set fixtures and setups where the clamp sits well above the machine bed.

Rather than stocking extra-long studs in every size, a coupling nut lets you use standard-length studs and extend as needed. This keeps your inventory lean — one set of standard studs plus a few coupling nuts covers a wide range of heights.