Round Metal Discs to Size, With or Without Holes

What a round metal disc costs

Price per piece incl. VAT, plus shipping, computed when this page loads with the configurator's own formula. Every hole adds a pierce and some cut length, so a disc with a bolt circle costs more than a plain blank of the same size.

The limits that matter for this disc

• Size: 10 to 500 mm diameter, centre hole 0 to 200 mm. A large centre hole turns the disc into a ring; keep the web at least as wide as the sheet is thick. The configurator does not check that.
• Bolt circle: up to 12 holes, evenly spaced, each up to 15 mm, on a circle of 10 to 400 mm. Here too the configurator does not check that the holes fit the disc: leave at least one sheet thickness of web from each hole to the outer edge, the centre hole and the next hole. For larger holes, uneven spacing or a slot, open the template in the sketcher.
• Material: steel DC01 up to 2.5 mm, structural steel S355MC 3 to 6 mm, stainless 1.4301 up to 5 mm, aluminium AlMg3 up to 4 mm. The smallest hole is half the sheet thickness, so 3 mm in 6 mm steel. This template's configurator does not check that yet, so watch it yourself in thick sheet.
• Accuracy: ISO 2768-m, so ±0.3 mm at Ø 100 mm, ±0.5 mm at Ø 300 mm and ±0.8 mm above Ø 400 mm. For a lid that has to fit inside a tube, choose the diameter 1 mm under the measured inside dimension, 1.5 mm above Ø 400 mm, so it still clears at the edge of the tolerance.
• Weight: a disc of Ø 300 mm weighs about 1.7 kg in 3 mm steel and about 0.6 kg in 3 mm aluminium.

Common questions about round metal discs

Blank, disc, round plate: what is the difference?

None that matters for the order: all mean a flat, round piece of sheet. Metalworkers say blank, DIY stores say round metal plate. Our template is called Disc / Circle.

Can I order a flange plate with a bolt circle?

Yes, you set the bolt circle diameter and the number and size of the holes directly. For a standard flange, enter the dimensions from the standard's table; we do not machine sealing faces or cut threads. Pressure-rated standard flanges are usually thicker than the 6 mm we cut.

How large can the centre hole be?

Up to 200 mm, as long as a rim at least as wide as the sheet thickness remains outside; watch that yourself, the configurator does not check it. A large centre hole makes a ring, such as a cover rosette or a spacer ring. For a small ring with a single hole, the washer is the simpler template.

Can I get a disc larger than 500 mm?

The template stops at 500 mm, the parcel at 550 mm width. Draw a disc of up to 550 mm in the sketcher; anything larger no longer fits a parcel and we do not deliver it at the moment.