The MK Diamond MK Black 1/2-inch (13 mm) core bit (part 156373) is a supreme grade, laser-welded wet core bit for concrete and asphalt. MK Diamond engineers the MK Black for exceptional footage and fast, aggressive drilling, and it is rated for excellent performance in applications with moderate to high steel reinforcement, which makes it the bit to reach for when heavily reinforced concrete is slowing a standard bit down.
This 1/2-inch size is a good match for small anchor, conduit and sensor holes through concrete. It has a 5/8-11 thread for your core drill and a 7.5 mm segment height with a 14-inch drilling depth.
Use cases
- Heavily reinforced concrete. Core through slabs, walls and footings where rebar density is moderate to high.
- Small anchor and dowel holes. Drill clean round holes for anchors, dowels and threaded rod.
- Electrical and utility work. Open holes for conduit, sensors and small service lines.
- Asphalt and general coring. Use the same bit on concrete and asphalt with a wet coring rig.
Specifications
- Brand: MK Diamond
- Series: MK Black supreme grade segmented core bit
- Part number: 156373
- Diameter: 1/2 inches (13 mm)
- Segment height: 7.5 mm
- Drilling depth: 14 inches
- Thread: 5/8-11
- Construction: Laser welded
- Use: Wet drilling only
- Materials: Concrete and asphalt
Fit and compatibility
Core bits are chosen by diameter and thread, not by drill model. Confirm that your core drill or rig accepts a 5/8-11 thread and that the 1/2-inch size and 14-inch depth suit the hole you need. MK Diamond notes that other diameters and lengths are available on request, so contact us if you need something different.
Getting the most from the bit
Run the bit wet with a steady, adequate water supply, keep the drill aligned and let the segments cut at a smooth, even feed rather than forcing the bit. Pulling the bit out periodically on deep holes helps clear slurry. If the bit starts to cut slowly after hitting steel or a very hard aggregate, stop and inspect the segments, and wear eye, hearing and slurry protection for the job.
Frequently asked questions
What is the MK Black 1/2-inch core bit used for?
MK Diamond describes the MK Black as a supreme grade core bit for wet drilling in concrete and asphalt, with excellent performance where steel reinforcement is moderate to high.
Can I use it dry?
No. MK Diamond lists the MK Black as a wet drilling bit, so use it with a water supply.
What thread does part 156373 have?
It has a 5/8-11 thread.
How deep can it drill?
The listed drilling depth is 14 inches, and MK Diamond says other lengths are available on request.
Should I choose MK Black or another grade?
MK Black is MK Diamond's supreme grade, built for fast, aggressive drilling with moderate to high steel reinforcement. MK Orange is the premium grade for light to moderate steel reinforcement.
Discount Cleaning Products is an authorized MK Diamond dealer, and our US-based team can help you match the right bit diameter, thread and drill rig before you order.
