Nut Driver Bit Wera 869/4 M SB

Metric nutsetter for hexagon head screws, the Wera 869/4 M SB is a 1/4" (6.3 mm) hexagon bit with a 25.4 mm shank length. It includes a strong permanent magnet to hold fasteners securely and is manufactured by Wera for professional and general workshop use. The bit conforms to holder dimensions according to DIN ISO 1173-F 6.3.

Advantages

The Wera 869/4 M SB offers precise fit for hexagon head screws, reduced cam‑out risk, and reliable torque transfer thanks to its accurate geometry. The built‑in permanent magnet simplifies fastening by holding nuts or screws in place. Made from hardened tool steel, the bit provides durability and consistent performance in repeated use.

Suitable for

• Assembly and maintenance of machinery with metric hexagon head screws
• Workshops and professional trade applications
• Use with 1/4" (6.3 mm) bit holders complying with DIN ISO 1173‑F 6.3

Key specifications

• Brand: Wera
• Model: 869/4 M SB
• MPN: 05073504001
• EAN: 4013288105721
• Bit type: Metric nutsetter for hexagon head screws
• Hex size: 1/4" (6.3 mm)
• Shank length: 25.4 mm (1")
• Magnet: Permanent strong magnet
• Compatibility: Holders per DIN ISO 1173‑F 6.3

How to use

Insert the 1/4" hex shank into a compatible driver or holder. Place the nutsetter over the hexagon head of the screw or nut so the magnet helps retain the fastener. Apply steady torque with a manual driver or powered tool, taking care not to exceed the fastener's torque rating. Remove the bit from the holder when finished and store it in a suitable toolbox or bit set to prevent damage.

Usage recommendations

Use the Wera 869/4 M SB with holders meeting DIN ISO 1173‑F 6.3 and choose the correct torque settings for the specific fastener and material. Inspect the bit regularly for wear; replace if rounding or damage is visible to maintain secure engagement and prevent fastener damage.