Skip to product information
1 of 3

Drill Bits Unlimited

0.1250" (1/8") x .870" LOC 4-Flute Square End Carbide End Mill, 1/8" Shank | M4-140

0.1250" (1/8") x .870" LOC 4-Flute Square End Carbide End Mill, 1/8" Shank | M4-140

Regular price $9.95 USD
Regular price Sale price $9.95 USD
Sale Sold out
Sold individually — price is per bit
Shipping calculated at checkout.
Quantity

Buy more and Save!

Minimum Qty Discount
10 + 5% off
25 + 7% off
50 + 10% off
100 + 15% off

This 1/8" 4-flute solid carbide end mill features a square end, center-cutting geometry, and a bright uncoated finish. The 0.870" length of cut provides extended reach for profiling, slotting, pocketing, and general CNC milling where a longer cutting length is needed.

The 4-flute design provides a strong cutting edge layout for finishing and light milling operations. This uncoated carbide end mill is best suited for non-ferrous metals, plastics, composites, and controlled light-duty milling setups. When used in steel or harder materials, use conservative speeds, feeds, shallow cuts, and a rigid machine setup.

  • Tool type: Solid carbide end mill
  • Cutting diameter: 1/8" / 0.125"
  • Flutes: 4
  • End style: Square end
  • Finish: Bright / uncoated
  • Helix angle: 30°
  • Length of cut: 0.870"
  • Shank diameter: 1/8" / 0.125"
  • Overall length: 1-1/2"
  • Cutting type: Center cutting
  • Cutting direction: Right hand

Typical Applications

  • Precision CNC milling
  • Slotting and profiling
  • Flat-bottom pocketing and contour work
  • Aluminum and other non-ferrous metal machining
  • Plastic and composite machining
  • Light-duty finishing and general-purpose milling

Benefits

  • Solid carbide construction provides good rigidity and wear resistance compared with high-speed steel tools.
  • 4-flute geometry helps improve surface finish and tool stability in suitable materials.
  • Square-end design is useful for flat-bottom pockets, profiles, and general milling work.
  • Center-cutting geometry allows ramping and plunge-style entry when used with proper setup.
  • 0.870" LOC provides added reach for deeper profiles and longer side-cutting applications.
  • Bright uncoated finish is a practical choice for non-ferrous materials, plastics, and general shop use.

Specifications

Tool Type Square End Mill
Cutting Diameter 1/8" / 0.125"
Length of Cut (LOC) 0.870"
Overall Length 1-1/2"
Shank Diameter 1/8" / 0.125"
Number of Flutes 4
End Style Square End
Helix Angle 30°
Material C2 Micro-Grain Solid Carbide
Finish Bright / Uncoated
Cutting Type Center Cutting
Cutting Direction Right Hand
Primary Application Non-ferrous metals, plastics, composites, and general-purpose light milling
Steel Use Light cuts only with proper speeds, feeds, and a rigid setup
Country of Origin Imported
Need help choosing starting speeds and feeds?
Use our carbide end mill feed and speed calculator as a starting point for setting up your cut.

Former SKU / item number: M183

Returns

Returns are accepted within 30 days of delivery for unused items in resalable condition. Original shipping charges are non-refundable unless the return is due to our error. Late, bulk, used, clearance, or special-order returns may be limited or subject to approval. See our Refund Policy for full details.

View full details