Holding round workpieces in a flat-jawed vice is a challenge — the round profile makes contact with the flat jaws on a single line only, which provides minimal grip and risks rotating the workpiece under any applied force. Prism (or vee) jaws solve this by replacing the flat profile with two angled faces that engage the round workpiece on four contact lines instead of one. The Sykes Pickavant 53331000 Prism/Vee Pipe Jaws are 100mm-wide insert jaws specifically designed for holding round and tubular workpieces in the Sykes Pickavant 100mm vice.
The vee profile engages the workpiece on both sides of each jaw, distributing the gripping force over a larger contact area and providing significantly more secure holding than flat jaws can offer on round work. This is particularly useful when holding pipe, tube, round bar, or cylindrical components for cutting, drilling, threading, or fitting work.
The 100mm width sizes the jaws to the smaller Sykes Pickavant 100mm vice format, suitable for the lighter-duty workshop bench work where this vice size is used. Equivalent 150mm and 180mm prism/vee jaws (53331500 and 53331800) are available for the larger vice formats.
Within the wider Sykes Pickavant vice jaw insert range, prism/vee jaws complement the flat-faced rubber, fibre, and polyurethane inserts that cover non-round workpieces. Workshops handling a mix of round and flat work benefit from holding both types.
Sykes Pickavant has been supplying professional vice and bench equipment for decades, and the prism/vee pipe jaw range reflects the brand's modular approach to vice configuration for specific workpiece geometries.
Additional Information
- 100mm Prism / Vee Pipe Magnetic Jaws compatible with any 4" Vice including the Sykes-Pickavant Unbreakable Vice.Designed for multipurpose application, offering efficient clamping and protection of the workpiece at the same time. Designed for; horizontal clamping of flat objects, horizontal clamping of round objects and vertical clamping of round objects.For thread cutting it is recommended only to use one prism jaw to avoid destroying the jaw. The vee-groove will align the workpiece and the serrations of the opposite vice jaw will keep it from turning.
- Equipped with an extremely powerful magnetic strip which easily attaches the jaw to the vice and ensures a rapid setup.
- The magnetic strip is only magnetic against the vice jaws and will not attract debris or fillings to the clamping surface nor magnetize the clamped parts.
- Features an extremely powerful neodymium magnetic strip. Holding force for a 100mm jaw is 3.5kg equivalent to 34N, for instance.
- These Magnetic Jaws can also be used in combination with one another. For instance, for taper pins or thin walled tubes use the Neutral or Prism / Vee Pipe together with the Rubber option. For irregularly profiled parts with one flat surface use the Fibre covered on the flat surface and the rubber covered on the profiled side.
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