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Cleveland 4-flute HSS square end mill, TiCN coated, Weldon flat shank

Cleveland

Cleveland C33254 4-Flute HSS Square End Mill .34375 in

SKU CH-D1TW-JJKXR

A 4-flute HSS square end mill with .34375 in cutting diameter and .75 in length of cut

  • Product typeMilling
  • 4-flute design enables efficient material removal
  • HSS construction with TiCN coating resists wear
  • 34375 in cutting diameter for precise milling
  • 75 in length of cut handles deep slots
  • Weldon flat shank ensures secure tool holding

Cleveland C33254 End Mill

The Cleveland C33254 is a four-flute high-speed steel square end mill designed for general-purpose milling operations. Its centre-cutting geometry allows plunge cuts as well as side milling in a variety of ferrous and non-ferrous materials. Machinists and maintenance technicians who need a reliable single-end tool for slotting, profiling or pocketing will find this cutter suited to manual and CNC machines alike. The Weldon flat on the shank provides positive clamping in standard tool holders.

High-Speed Steel Limits

High-speed steel offers good toughness and wear resistance for interrupted cuts, yet it cannot match the heat resistance or cutting speeds of carbide tooling. The TiCN coating extends tool life by reducing friction and built-up edge, but the substrate still softens above typical HSS red-hardness temperatures. Users must therefore limit spindle speeds and feed rates to prevent premature flank wear or catastrophic failure when machining hardened alloys or taking deep cuts.

Installation And Common Issues

The 3/8 inch shank with Weldon flat seats directly into compatible collets or end-mill holders without additional adapters. Secure the flat against the set screw to prevent pull-out during heavy radial loads. Problems usually arise from excessive run-out caused by worn holder bores or from insufficient clamping torque, both of which accelerate coating delamination and chatter. Verify tool length offset after every tool change to avoid crashes.

How it compares

Measured against everything we stock in Bits, Hole Saws & Accessory Kits, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 62% of the 5,493 comparable items (median $27.99).

Specifications

Product
Brand nameCLEVELAND
Product typeMilling

Questions about this item

Should I choose the .34375 in diameter or a different size?

Select the .34375 in milling diameter when your operation requires that exact cutter width; the tool also has a 3/8 in shank diameter and a .75 in length of cut.

What does the .34375 in milling diameter mean once the cutter is in the spindle?

It defines the width of material removed in a single pass; the four-flute high-speed steel body with TiCN coating handles the cutting forces at that diameter.

What interface does the Weldon flat shank use and what does it cap in practice?

The 3/8 in Weldon flat locks into a matching end-mill holder, capping run-out to the holder's tolerance and preventing the tool from pulling out under load.

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