Socket bit Wera 8790 HMA 5.5 mm 1/4" Hex for 1/4" drive

Wera 8790 HMA 5.5 mm 1/4" Hex socket bit is a compact interchangeable bit designed for use with 1/4" drive tools. The bit provides a precise 5.5 mm hex profile that ensures accurate engagement with hex-head fasteners. Built to fit standard 1/4" bit holders, ratchets and driver handles, this Wera socket bit is suitable where a short, strong hex interface is required for assembly, maintenance and repair work.

Advantages

The hardened and precisely machined hex tip reduces wear and rounding on fasteners while delivering consistent torque transfer. Its 1/4" drive interface provides broad compatibility with common bit holders and ratchets. The short, robust design improves access in confined spaces and offers stable seating in the bit holder to prevent wobble during use.

Suitable for

• Assembly of small machinery and equipment
• Maintenance and repair of electronics and appliances
• Automotive interior and trim work where compact bits are needed
• General workshop and professional hand tool tasks

Key specifications

• Hex size: 5.5 mm
• Drive interface: 1/4" (6.35 mm) drive
• Bit type: Hex socket bit
• Material: hardened tool steel (precision-machined tip)
• Length: short/compact profile for limited-access areas

How to use

Insert the 1/4" drive end of the Wera 5.5 mm hex socket bit into a compatible bit holder, ratchet or screwdriver with a 1/4" drive. Ensure the bit is fully seated and secured in the holder to avoid play. Position the hex tip into the fastener head and apply steady torque; for high-torque applications use an appropriate ratchet or wrench designed for the drive size. Inspect the bit and fastener before use to confirm correct engagement and avoid slippage.

Usage recommendations

Use the bit within the torque limits recommended for 1/4" drive tools and avoid applying excessive force with impact tools unless the bit is specifically rated for impact use. Keep the tip clean and free from burrs; replace the bit if excessive wear or rounding is observed to maintain reliable fastening performance.