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Slotted Capstan Screw

Slotted Capstan Screws host a cylindrical head that features a number of radially symmetrical holes, which can be used for the insertion of a lever, cable or wire, which is then regularly turned around or wound around the screw to adjust the tension.

They are relatively unique in that they can be driven using their slotted drive with a bit, or via their radial holes.

Applications that the Slotted Capstan Screw can be found in include metrology, the science of measurement, or most often within musical instruments such as pianos, due to their fine incremental adjustment capabilities.

Available in A1 Stainless Steel, Nylon/Plastic, and Brass, with other materials also available, with a range of finishes or coatings available.

As standard, Slotted Capstan Screws are available in M3 to M6. Optional thread locking patches are also available on request.

Non-standard sizes, materials and finishes are available to order as specials, including small volume manufacture, modifications and custom parts made to drawings.slotted capstan screws

Metric Technical Data & Available Sizes
Thread Diameter M3 M4 M5 M6
D (mm) 5.5 7.0   8.5  10.0
H (mm) 1.5  2.0  2.5 3.0
K (mm) 4.0  5.0  6.5 8.0
P min. (mm) 1.0  1.4  1.7 2.2
N (mm) 0.8 1.0   1.2 1.6
Available Sizes M3 M4 M5 M6
4mm black triangle icon image
5mm black triangle icon image black triangle icon image
6mm black triangle icon image black triangle icon image
8mm black triangle icon image black triangle icon image black triangle icon image
10mm black triangle icon image black triangle icon image black triangle icon image black triangle icon image
11mm blue icon image
12mm black triangle icon image black triangle icon image black triangle icon image black triangle icon image
14mm blue icon image
15mm blue icon image
16mm black triangle icon image black triangle icon image black triangle icon image black triangle icon image
17mm blue icon image
20mm black triangle icon imageblue icon image black triangle icon image black triangle icon image black triangle icon image
23mm blue icon image
25mm black triangle icon image black triangle icon image black triangle icon image
30mm black triangle icon image black triangle icon image black triangle icon image
35mm blue icon image
black triangle icon image = A1 Stainless Steel // blue icon image = Nylon/Plastic
Size not listed? Please make an enquiry – we may be able to provide it.

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