6.3-20.5mm Countersink Bit Set 90° HSS, 8-Piece Rapidaptor With Kraftform Handle - Wera Werkzeuge GmbH

Take advantage of the combination of high-speed steel cutting edges, Rapidaptor quick-change capability and a multi-component Kraftform handle for efficient, repeatable countersinking in both hand and machine operations. Order the set directly via Metav Werkzeuge or consult our specialists for application advice.

Wera 846/8 Countersink Bit Set — HSS, 90° countersinks, Rapidaptor

Wera 846/8 Countersink Bit Set for precise 90° countersinking in handheld and machine use, ideal for assembly and preparation of screw seats.

• High-quality HSS countersink bits
• Rapidaptor quick-change system
• Multi-component Kraftform handle
• 6.3 mm (1/4") hex drive

Precision countersinking for consistent assembly results

The set features HSS countersink bits machined to a 90° geometry, delivering clean, reproducible chamfers and screw seats. The available diameters from 6.3 mm to 20.5 mm cover a wide range of fastener preparations without the need for multiple specialised tools. These three-fluted countersinks are shaped to remove material evenly, reducing chatter and heat build-up during operation, which helps maintain hole geometry and surface finish in repetitive production tasks.

Rapid changeovers and ergonomic handling minimise downtime

Changeovers are speeded up by the Rapidaptor quick‑change interface and the 6.3 mm (1/4") hex drive, allowing fast swapping between the Kraftform handle and the universal holder. The multi-component handle provides secure grip and torque transmission for manual use, while the 50 mm universal bit holder (non-magnetic) facilitates machine or cordless‑driver attachment. This combination reduces non-productive time and supports a smoother workflow on mixed manual and machine workstations.

Built for versatile workshop and onsite use

Designed for both hand and machine operation, the countersinks are suitable for conventional cordless screwdrivers and drilling equipment. The set is supplied in a robust plastic case, keeping the tools organised and protected between jobs. The compact kit supports quick selection and transport across the shop floor, making it practical for tradespeople, maintenance teams and assembly lines where mobility and orderliness are required.

Complete kit composition supports immediate use

Contents include a Kraftform hand handle (119 mm), a universal bit holder (50 mm, non-magnetic) and one countersink bit each in 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm and 20.5 mm sizes — an 8-piece solution ready for immediate deployment. The configuration balances precision tooling with operational convenience, ensuring the Wera kit integrates readily into existing tool sets and reduces the need for ad-hoc purchases.

Choose the Rapidaptor-equipped Wera set for faster changeovers and reliable chamfering — contact Metav Werkzeuge for order details and tailored advice via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 4000829680NW
• SKU / UID: 4000829680NW
• Description: Wera 846/8 countersink bit set, 90° HSS, plastic case

Core specifications

• Countersink diameters: 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm, 20.5 mm
• Cutting angle: 90°
• Drive: 6.3 mm (1/4") hex
• Handle length: 119 mm
• Universal holder length: 50 mm
• Pieces: 8

Features and accessories

• High-speed steel (HSS) countersink bits
• Three-fluted geometry
• Rapidaptor quick-change chuck
• Multi-component Kraftform handle
• Universal bit holder (non-magnetic)
• Plastic storage case

FAQ

What sizes are included in the set?
The set contains countersink bits in 6.3 mm, 8.3 mm, 10.4 mm, 12.4 mm, 16.5 mm and 20.5 mm, plus a Kraftform handle and a 50 mm universal holder as listed for the Wera 846/8 countersink bit set.

Can these countersinks be used with cordless screwdrivers?
Yes — the kit is specified for hand and machine operation and is compatible with conventional cordless screwdrivers via the 6.3 mm (1/4") hex drive and the Rapidaptor quick-change interface.

What material are the cutting edges made from?
The countersink bits are manufactured from high-speed steel (HSS), offering wear resistance and suitable cutting properties for standard workshop countersinking tasks.

What items are supplied with the set?
Delivery includes a Kraftform hand handle (119 mm), a universal bit holder (50 mm, non-magnetic) and one countersink bit of each size listed, presented in a plastic case for storage.

Is the universal holder magnetic?
The universal holder supplied with the Wera 846/8 set is specified as non-magnetic to suit a range of holder and driver setups.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com