Description
Overview:
The Carbon Brush A.S. Type (1 Pair) is a genuine Hikoki replacement for the motor brushes used in selected corded screwdrivers. Made from high‐quality carbon for stable conductivity, this set helps maintain smooth motor performance and consistent speed under load. Supplied as a matched pair, it is designed to fit the Hikoki/Hitachi W6V4 and W6VB3, restoring reliable operation when original brushes are worn. The A.S. (Auto‐Stop) style is designed to cut power when the brush reaches its wear limit, helping to protect the commutator and armature. As a Genuine Part, it offers assured compatibility and service life, and is a direct replacement for OEM No. 999091. Ideal for professional users and DIY maintenance of electric screwdrivers.
Key Features:
- Genuine Hikoki/Hitachi part for correct fit and performance
- A.S. (Auto‐Stop) design helps protect the motor at end of brush life
- High-quality carbon for reliable electrical contact and low sparking
- Supplied as a pair for full brush replacement on one tool
- Direct replacement for OEM No. 999091 to simplify identification
- Stable running and reduced arcing to support longer commutator life
- Pre‐assembled brush leads and spring for straightforward fitting
- Helps recover lost power and intermittent performance in worn tools
- Suitable for trade, site, and workshop use with consistent results
- Supports routine maintenance to minimise downtime
Typical Applications:
Used to replace worn motor brushes in Hikoki/Hitachi corded screwdrivers during scheduled maintenance or when symptoms such as excessive sparking, poor start‐up, or loss of torque appear. Suitable for refurbishment of tools in construction, drywall fitting, joinery workshops, maintenance departments, and general site work where dependable screwdriving performance is required.
Also known as:
Motor brush set, carbon motor brushes, brush assembly, commutator brushes, replacement brush pair, AS type brushes, auto‐stop brush set, Hitachi brush kit, power screwdriver brushes, carbon brush kit.
Fits Models:
W6V4, W6VB3
Alternate Part Numbers:
999091, HKK999091
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