WALTER Micro Drill Bit: 0.31 mm, 118° 2-Facet Point
The WALTER Micro Drill Bit (SKU 440P45, MPN A3143-0.31) is a 0.31 mm cobalt micro drill bit with a 118° 2-facet point and regular spiral flute design. This precision tool is manufactured by WALTER and features a…
SKU 3G-OTH-195081
Need installation or engineering help?
Ask a question
Product Description
The WALTER Micro Drill Bit (SKU 440P45, MPN A3143-0.31) is a 0.31 mm cobalt micro drill bit with a 118° 2-facet point and regular spiral flute design. This precision tool is manufactured by WALTER and features a 0.0122 inch diameter specification.
Frequently Asked Questions
What is the WALTER Micro Drill Bit used for?
The WALTER Micro Drill Bit (MPN A3143-0.31) is used for precision drilling in metal, plastic, and composite materials. Its 0.31 mm diameter and 118° 2-facet point make it ideal for PCB work, mold making, and fine machining where tight tolerances are required.
What are the specifications of the WALTER Micro Drill Bit?
The WALTER Micro Drill Bit has a 0.31 mm (0.0122 inch) diameter, a 118° 2-facet point, and a regular spiral flute design. It is made from cobalt for heat resistance and durability. The manufacturer part number is A3143-0.31, and the SKU is 440P45.
Where to buy WALTER Micro Drill Bits worldwide?
You can source the WALTER Micro Drill Bit (MPN A3143-0.31) through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations, ensuring your precision tool arrives reliably.
How to select the right WALTER Micro Drill Bit for your application?
Select the WALTER Micro Drill Bit based on material and hole size. For metals, use cobalt bits with a 118° point. The 0.31 mm diameter suits fine electronics or micro-machining. Ensure your drill chuck can hold the small shank securely to prevent breakage.
Used in
Common applications for WALTERWALTER Products
3G Electric supplies WALTER cobalt micro drill bits. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.















