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Walter Metric Machine Key 4mm x 4mm x 16mm - Carbon Steel

$8.24/ea $5.89/1 per each only $5.89/eaSave 29%

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OVERVIEW

Reliable Replacement Key Steel for Equipment Repair

When a drive shaft key shears, your entire operation can come to a grinding halt. The Walter Key Steel 4X4X16 is the reliable solution you need to get your welders, generators, saws, and shop machinery back up and running. This 4mm x 4mm x 16mm machine key is a small but mighty part of your MRO (Maintenance, Repair, and Operations) inventory. Designed to lock pulleys, gears, and drive wheels onto shafts, it ensures that the power from your motor is effectively transferred to the machine, preventing slippage and restoring full functionality.

Made from durable carbon steel, this key is built to handle the torque and stress of daily industrial use. It is commonly found in the drive systems of wire feeders, bench grinders, drill presses, and ventilation fans. If you have ever tried to cut a small key from a long piece of stock with a hacksaw, you know it can be frustrating and imprecise. This pre-cut Walter key saves you time and frustration—it is factory-cut to the exact 16mm length with clean, square edges, ready to drop straight into the keyway. No filing, no guessing, just a perfect fit that gets your equipment back in service faster.

Keep a supply of these essential hardware components in your shop drawer or maintenance cart. Machine keys are often the "fuse" in a mechanical system, designed to shear before the shaft or gear breaks during an overload. Replacing a sheared key is cheap and easy; replacing a damaged motor shaft is not. With the Walter Key Steel 4X4X16, you ensure you have the right part on hand for those unexpected breakdowns. Its robust construction resists deformation and wear, providing a long-lasting repair that you can trust.

Why Choose Walter Key Steel?

  • Perfect Fit: Precision 4x4mm square profile fits standard metric keyways.
  • Durable: Tough carbon steel construction resists shearing.
  • Convenient: Pre-cut 16mm length saves fabrication time.
  • Versatile: Suitable for a wide range of motors and shop tools.
Additional Information
Material:Carbon Steel
Width:4mm
Height:4mm
Length:16 mm
Product Type:Machine Key, Key Steel
Packaging Description:1 per each

INCLUDED

  • 1 x Walter Key Steel (4mm x 4mm x 16mm)

APPLICATIONS

  • Locking pulleys to motor shafts
  • Securing gears in gearboxes
  • Mounting sprockets on drive shafts
  • Repairing bench grinders and drill presses
  • Maintenance of conveyor systems
  • Automotive and agricultural machinery repair

FAQ

The dimensions are 4mm in width, 4mm in height, and 16mm in length.

It is manufactured from high-quality carbon steel, providing excellent shear strength for power transmission.

This is a pre-cut machine key (finished part) with a length of 16mm, ready for immediate installation.

Yes, carbon steel keys can be carefully filed or sanded for a custom fit if your keyway is worn or slightly undersized.

It is used to lock rotating components like gears, pulleys, and sprockets to a drive shaft to transmit torque.

Yes, the 4mm x 4mm profile is a standard metric size for parallel keys (often corresponding to DIN 6885 standards).

No, the key is supplied in a condition ready for use in standard industrial applications without further heat treatment.
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