The 150mm C-cramp is a traditional C‑shaped clamping tool designed to hold materials together securely during gluing, welding, drilling and general workshop assembly. With a nominal 150mm jaw opening (approximately 6 inches) and a 150mm throat depth, this cramp is intended for medium‑duty clamping where controlled, steady pressure is required across a flat or irregular surface.

Manufactured with a malleable cast iron frame (EN 1561 / GG25 equivalent) and a hardened steel spindle, the cramp provides a durable clamping body with a wear‑resistant screw. The spiral screw carries a coarse right‑hand thread manufactured to metric thread tolerances (ISO 965), which gives positive engagement and simple, rapid adjustment. The pressure pad is a swivel steel pad to allow even distribution of force on uneven workpieces, and the drive is a fixed T‑bar handle that permits manual tightening and release. The frame is finished in a black enamel/powder coat to resist chipping in normal use while the spindle is zinc‑plated for enhanced corrosion resistance.

This 150mm C‑cramp is widely used in woodworking, light metal fabrication, automotive repair, maintenance workshops and hobbyist projects. It is particularly suitable for clamping panels, holding assemblies for tack welding, and securing components while adhesives cure. Its combination of a robust cast frame and hardened screw makes it appropriate for repetitive shop use without deforming the clamped parts.

Key benefits include good corrosion protection from the plated spindle and enamel frame, a strong cast body able to withstand compressive loads encountered in workshop tasks, and a swivel pad that improves compatibility with angled or irregular surfaces. The coarse right‑hand thread provides quick engagement while allowing fine control of clamping pressure, and the T‑bar gives a simple, familiar drive method that does not require additional tools.

Duchy Fasteners stocks the 150mm C‑cramp as packed units and carries a wider range of C‑cramps across sizes for different duties, typically from smaller 25–50mm clamps up to larger 300mm variants, available singly or in multi‑packs to suit trade and workshop requirements.