Wiha 75040 4mm System 4 Slotted Micro Bit

NOTE: The product title and description supersede the image shown. The picture provided by the manufacturer is not always exact. We may use the same image for multiple sizes of an item.


List Price: $1.90
Sale Price: $0.57
Stock Status:
item in stock 10+ In Stock. Not backorderable.
Adding to cart… The item has been added
System 4 Slotted Micro Bit 4.0 x 28mm

High alloy CVM steel, hardened, on 4mm hex stock.

Wiha Tools No Hassle Guarantee

Please note: KC Tool is no longer a dealer of Wiha Tools. If the tool in question was purchased from us we will do our best to find a replacement. Otherwise please contact Wiha Tools directly.

Wiha branded tools are regarded as the most durable, best designed and highly innovative products around. Our tools are used by demanding professional tradespeople and tool aficionados alike. They are meant to be used and utilized often. However, if you are not happy for any reason return them within 12 months of purchase with proof of purchase and Wiha will Repair or Replace. Rest assured, if for some reason there is a defect in material or workmanship Wiha will replace your tool free of charge for as long as you own the tool.

Failures due to misuse, abuse or normal wear and tear are not covered by this guarantee. We stand by our products with what we believe is the best No Hassle Guarantee in the industry.

Wiha Tools has the right to exclude bits, Tweezers and Ceramic Screwdrivers. These products are either consumable or wear easily. All torque tools are designed to be re-calibrated after 5,000 cycles or 1 year (whichever comes first).

Some areas do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This guarantee gives you specific rights, and you may also have other rights, which vary, from state to state, province to province, or country to country.

This No Hassle Guarantee is the sole and exclusive guarantee for the Willi Hahn Corporation dba Wiha Tools. No employee, agent, dealer, or other person is authorized to alter this guarantee or make any other guarantees on behalf of Wiha Tools.
Slotted 4.0 mm (5/32 in.)
25-38mm (1.0-1.4 inches)
Individual Tools
Natural Finish
Country of Origin:
Made in Germany
In Stock

4 Reviews Write a Review

  • 5

    Posted by yudhiansyah Yudh on Jun 4th 2021

    An alternative for #4 slotted screws. Fits almost perfect. Label says Made in Vietnam.

  • 5
    4mm System 4 Slotted Micro Bit

    Posted on Nov 22nd 2015

    Small size for working on computer and glasses frames.

  • 5
    Carburetor Pilot Screws

    Posted by jeff gronert on Jun 6th 2015

    I bought these System 4 bits (in 3, 3.5, and 4mm), along with the Wiha 75802 1/4" Hex Bit to System 4 Micro Bit Adaptor to work with the Motion Pro 90 Degree Carb Tool. - - http://www.motionpro.com/motorcycle/partno/08-0229/

  • 5
    no complaints

    Posted by E. Johnson on Sep 8th 2014

    Quality appears good (more precise than 1/4" hex Wiha bits) and no problems so far. They are even labeled, which is nice.