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Cobalt in the carbide, and no arbor size on the page

Milwaukee 48-40-4205, 5-3/8 in 30T carbide

A cold-cut blade for a cordless metal saw, with cobalt in the carbide and vibration slots in the plate — and no arbor size, kerf or speed rating published.

Milwaukee 5-3/8 inch carbide metal cutting circular saw blade

Milwaukee 48-40-4205, 5-3/8 in 30T carbide

A cold-cut blade for a cordless metal saw, with cobalt in the carbide and vibration slots in the plate — and no arbor size, kerf or speed rating published.

Amazon reference
B0B4PBQ93R
EAN
0045242569199
  • Cobalt-infused tungsten carbide stated, which is a tougher grade than plain carbide for ferrous work
  • Laser-cut vibration damping slots in the plate, stated to reduce heat and noise
  • No arbor size published, on a circular blade — the one dimension that decides whether it fits

Best for: A cordless metal-cutting circular saw on steel and stainless, where a cool, burr-free cut is the point

≈ $35
Check price on Amazon

Specifications

Amazon reference
B0B4PBQ93R
EAN
0045242569199

Cold cutting is the better way to cut steel and this blade is built for it: thirty carbide teeth on a 5-3/8 in plate, sized for the cordless metal saws that have largely replaced the abrasive chop saw on site. The argument is in the last bullet and it is the right one — “Cuts cooler for immediate handling and less down time”. An abrasive wheel leaves a blue, burred edge and an offcut too hot to touch; a carbide blade shears a chip and leaves neither.

Two specifications support it. The carbide is cobalt-infused, which is a tougher grade than plain tungsten carbide and the reason the teeth survive stainless rather than chipping. And the plate carries laser-cut slots that damp vibration, which on a thin blade spinning in steel reduces both the noise and the heat that takes the temper out of a tooth.

What the listing does not contain is the dimension that decides whether you can use it. There is no arbor size — and 5-3/8 in cordless metal saws use more than one bore. There is no kerf, no plate thickness and no maximum speed. The product description field, where all of that would normally sit, reads “NA”. And the first and fourth bullets are the same claim twice: cobalt-infused carbide to extend cutting life, cobalt-infused carbide to maintain tip sharpness.

Availability

Read on the day this page was built: $35 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-10-07. The live price is at the top of the page.

The questions welders ask

What does cold cutting actually buy?

An edge you can hold and do not have to dress. An abrasive wheel grinds through, heating the cut until it is blue and leaving a burr; a carbide cold-cut blade shears a chip, so the offcut is cool enough to pick up immediately and the edge is nearly clean. Milwaukee says exactly that — "Cuts cooler for immediate handling and less down time" — and on stainless it matters twice over, because heat is what damages the corrosion resistance around the cut.

Will it fit my saw?

The page will not tell you. There is no arbor size anywhere on the listing, which on a circular blade is the dimension that decides the question — 5-3/8 in cordless metal saws commonly use a 20 mm (0.79 in) or 5/8 in bore, and they are not interchangeable. The TOMAX blade on this shelf publishes its 5/8 in arbor; this one publishes none, and the kerf and maximum speed are missing too.

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