The MK Diamond MK Orange 6-1/4-inch (159 mm) core bit (part 156364) is a premium grade, laser-welded wet core bit for concrete and asphalt. MK Diamond designs the MK Orange for wet drilling that includes light to moderate steel reinforcement, and its high diamond concentration is meant to give excellent footage and cutting speed, so it suits crews who hit occasional rebar and still want to keep cost per hole down.
This 6-1/4-inch size is a good match for duct, large drain and sleeve openings through slabs and walls. It has a 1-1/4-7 nut for your core drill and a 7.5 mm segment height with a 14-inch drilling depth.
Use cases
- General concrete coring. Drill round holes through slabs, walls and footings with a wet coring rig.
- Asphalt coring. Take clean samples or open penetrations in asphalt pavement.
- Plumbing and electrical rough-in. Open penetrations for pipe, drain and conduit runs.
- Anchor and utility work. Cut accurate holes for sleeves, fixtures and service lines.
Specifications
- Brand: MK Diamond
- Series: MK Orange premium grade segmented core bit
- Part number: 156364
- Diameter: 6-1/4 inches (159 mm)
- Segment height: 7.5 mm
- Drilling depth: 14 inches
- Nut / thread: 1-1/4-7
- 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 1-1/4-7 thread and that the 6-1/4-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 Orange 6-1/4-inch core bit used for?
MK Diamond describes the MK Orange as a premium grade core bit for wet drilling in concrete and asphalt, including light to moderate steel reinforcement.
Can I use it dry?
No. MK Diamond lists the MK Orange as a wet drilling bit, so use it with a water supply.
What thread does part 156364 have?
It has a 1-1/4-7 nut.
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 Orange or another grade?
MK Orange is the premium grade for wet drilling with light to moderate steel reinforcement. MK Diamond lists MK Yellow as a standard grade for general wet drilling and MK Black as a supreme grade for moderate to high 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.
