MK Diamond MK Yellow 1" (25mm) Standard Grade Core Bit for Concrete & Asphalt, Coring Drilling # 156320

MK Diamond MK Yellow 1-inch (25mm) standard grade segmented core bit, 5/8-11 thread, 14-inch drilling depth, for wet drilling concrete and asphalt
 

The MK Diamond MK Yellow 156320 is a 1-inch (25mm) standard-grade wet core bit for concrete and asphalt. It is the narrowest bit in the MK Yellow range, sized for a single small conduit run or an anchor sleeve.

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• Best For: Wet coring 1-inch (25mm) holes for a single small conduit run or a threaded anchor sleeve.
• Highlight: At 25mm this is the narrowest MK Yellow barrel, so it clears the least material and drills fastest of the series at a given rig power.
• Expert Note: A 1-inch barrel leaves little room for slurry to escape, so keep water flowing steadily or the narrow kerf will pack and stall the bit.
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Description Reviews FAQ
 

The MK Diamond MK Yellow 1-inch (25mm) core bit (part 156320) is a standard grade segmented bit for general wet drilling in concrete and asphalt. MK Diamond describes the MK Yellow as an excellent choice for all types of general wet drilling that delivers fast drilling and good footage.

At 1 inch across it makes the small holes that anchors, dowels, sensors, conduit and test cores call for, with a 14-inch drilling depth and a 7.5mm segment height.

Use cases

  • Anchor and dowel holes. Core clean round holes for anchors, dowels and rebar-free penetrations.
  • Utility penetrations. Open holes in concrete and asphalt for small conduit, sensors and lines.
  • Pavement and slab work. Drill general-purpose holes with a wet coring setup.
  • Contractor stock. Keep a standard grade bit in the smallest common MK Yellow size.

Specifications

  • Brand: MK Diamond
  • Series: MK Yellow standard grade core bit
  • Part number: 156320
  • Diameter: 1 inch (25 mm)
  • Drilling depth: 14 inches
  • Segment height: 7.5mm
  • Thread: 5/8-11
  • Cutting method: Wet drilling

Fit and compatibility

This bit is specified by diameter and thread. The 1-inch size has a 5/8-11 thread, while larger MK Yellow sizes use 1-1/4-7, so confirm that your drill or coring rig matches the thread before ordering. MK Diamond notes that additional diameters and lengths are available on request.

Getting the most from the bit

Use a steady water supply while drilling, let the segments cut instead of forcing the bit, and withdraw it periodically to clear slurry from the hole. Follow your drill or rig maker's speed guidance and wear eye and hearing protection.

Frequently asked questions

What is the MK Yellow core bit used for?

MK Diamond describes it as a standard grade core bit and an excellent choice for general wet drilling in concrete and asphalt.

Is the MK Yellow a wet or dry bit?

It is a wet drilling bit.

How deep does it drill?

The drilling depth is 14 inches.

What thread does part 156320 use?

The 1-inch size uses a 5/8-11 thread.

Are other sizes available?

Yes. MK Yellow comes in many diameters, and MK Diamond says additional diameters and lengths are available on request.

Discount Cleaning Products is an authorized MK Diamond dealer, and our US-based team can help you match the right size, arbor and tool before you order.

Features
  • Drills concrete and asphalt wet for general coring work
  • Delivers fast drilling and good footage per MK Diamond
  • Reaches 14 inches deep for through-slab and deeper holes
  • Holds up with a 7.5mm segment height
  • Mounts on a 5/8-11 thread in the 1-inch (25mm) size