The MK-404D is MK Diamond's Supreme Grade laser-welded blade, described by MK as a general purpose blade for concrete and masonry materials, and this is the 14-inch size, part number 151448. It is bought by masonry contractors, hardscape crews, rental yards and maintenance shops that keep one dependable blade on a 14-inch cut-off saw for whatever the job throws at it: block, brick, pavers, curbing and the occasional slab edge. A general purpose blade earns its place by not needing a blade change every time the material does, and the 0.375-inch kerf on this size gives the core enough body to stay straight in a deep cut.
Use cases
- Concrete block and brick walls. Cutting CMU and brick to length and notching openings on a cut-off saw.
- Pavers and curbing. Sizing pavers, edging stone and curb sections on a hardscape job.
- Utility and plumbing cutouts. Opening block and masonry walls for pipe, conduit and vent penetrations.
- Rental and shop fleets. One blade that handles mixed masonry work so crews are not swapping specialty blades.
- Demolition and renovation. Cutting back masonry and light concrete during tear-out.
Specifications
- Diameter: 14 inches (356 mm)
- Blade width (kerf): 0.375 inch
- Arbor: 1 inch
- Segment height: 10 mm
- Construction: Laser welded
- Grade: Supreme
- MK part number: 151448
Fits
The 151448 mounts on saws that accept a 14-inch blade on a 1-inch arbor, which covers most gas-powered cut-off saws. Confirm your saw's maximum blade diameter and that the saw's no-load speed does not exceed the maximum speed marked on the blade before mounting it.
Frequently asked questions
What is the MK-404D designed to cut?
MK describes the MK-404D line as general purpose blades for concrete and masonry materials, so it suits block, brick and concrete rather than a single specialty material.
Is the 14-inch 151448 a dry-cutting blade?
MK lists the MK-404D as a laser-welded Supreme Grade blade for dry cutting applications. Always follow the operating notes marked on the blade and the saw manufacturer's guidance.
What size arbor does it have?
The 14-inch 151448 has a 1-inch arbor. If your saw uses a different arbor, do not force the fit; use a saw with a matching arbor.
How do I control silica dust when cutting concrete or masonry?
Cutting concrete and masonry releases respirable crystalline silica. NIOSH recommends water suppression or a shrouded tool connected to a HEPA vacuum, plus respiratory protection. Plan your dust control before the blade goes on the saw.
The blade stopped cutting but the segments still look tall. What happened?
That is glazing. The bond has smeared over the diamonds, usually from heat, too much feed pressure or a blade that does not suit the material. Dress the blade by cutting an abrasive material such as a concrete block to re-expose the diamond, and ease off the feed.
MK Diamond Products is an American diamond-tool manufacturer whose family business traces back to 1868, when Joseph Musto founded the Musto Steam Marble Mill in San Francisco. Discount Cleaning Products is an authorized MK Diamond dealer and stocks MK blades and profiling tools alongside its surface preparation line, with US-based order support if you need help matching a blade to your saw.
