Small Steel Disc Blanks – 20 to 90 mm (Packs)

Solid round steel disc blanks from 20 mm to 90 mm diameter, plasma cut from 3, 4 or 5 mm mild steel, 304 or 316 stainless. Sold in packs of 5, 10 or 25 identical discs.

At a glance

• Shape: solid flat disc, no holes
• Diameters: 20, 25, 30, 40, 50, 60, 75 or 90 mm
• Packs: 5, 10 or 25 identical discs
• Thickness: 3 mm as standard, 4 mm and 5 mm cost more
• Material: mild steel, 304 or 316 stainless
• Finish: plasma-cut edge, deburred, mill finish (unpainted)
• Made in Knowsley, Merseyside

Need a hole in the middle or a size we don’t list? Send us a drawing.

What people use them for

Small discs are used as weld-on pads and feet, blanking plates, packers under machine feet, cover plates over old bolt holes, and blanks for drilling, engraving or stamping. For larger discs from 100 mm up, use our circular plate cut to size.

Choose your material

• Mild steel: the economical choice. Paint, prime or galvanise it for outdoor use.
• 304 stainless: the everyday stainless grade for indoor and sheltered outdoor use.
• 316 stainless: best near the coast, pools, salt or chemicals. 304 vs 316 explained.

How to order

1. Pick your material and thickness.
2. Pick the diameter and the pack quantity.
3. We plasma cut, deburr and pack your order.
4. Delivery is added at checkout.

Made to order. We email your dispatch date. See delivery rates. Capping round tube? See round tube end caps.

Questions

Are the discs perfectly flat?
They are cut from flat sheet and deburred. Small parts can move slightly from cutting heat, so they are not precision-ground.

Can I engrave or stamp them?
Yes. Stainless gives a clean, rust-free finish for tags and plaques.

How much does a 50 mm disc weigh?
About 46 g in 3 mm mild steel.

Are these laser cut?
No. They are plasma cut and deburred, so edges show a plasma-cut finish and are not held to laser-cut tolerances. For tight-tolerance parts, send us a drawing.