Socket Wera 8790 HMA

The Wera 8790 HMA is a 1/4" drive metric socket (ISO 2725-3) with a ball intercept ring, designed for use with external hexagonal bolts and nuts. It is suitable for both hand and machine operation (non-impact) and is shaped to work even with low-lying screw heads and protruding threaded rods. The socket includes Wera's Take it easy tool finder with colour coding by size and an easy-to-grip surface that remains manageable with oily hands. The hexagon profile enables high torque transmission while reducing stress on bolt and screw head edges; combined with fine-toothed ratchets and a small return angle, it is effective in confined spaces.

Advantages

The Wera 8790 HMA offers precise fit and durable construction, providing reliable performance in professional settings. Colour-coded sizing speeds up tool selection. The ball intercept ring secures the socket on the drive, and the hexagon profile reduces wear on fastener corners. The grip texture aids handling even with lubricated hands, and the socket's geometry suits both manual and machine-driven, non-impact fastening.

Suitable for

• Fastening and loosening external hex bolts and nuts
• Manual screwdriving with a 1/4" drive ratchet or wrench
• Machine-operated, non-impact assembly tasks with a 1/4" drive
• Work in confined spaces or on low-profile fasteners

Key specifications

• Brand: Wera
• Model: 8790 HMA
• Drive: 1/4" (6.35 mm)
• Standard: ISO 2725-3
• Length: 50 mm
• Diameter: 12 mm
• Type: Metric external hex socket with ball intercept ring
• Made in: Taiwan
• MPN: 05004506001
• EAN: 4013288210296

How to use

Fit the socket onto a compatible 1/4" drive ratchet or machine adapter until the ball intercept ring engages to secure the connection. Place the socket over the external hex fastener and apply torque using a hand ratchet or a non-impact machine driver. For low-profile screws or protruding studs, align the socket so the hex sides seat fully on the fastener before turning. After use, remove the socket by pulling it off the drive while depressing the ball ring if needed.

Usage recommendations

Use only with non-impact machines and hand tools appropriate for a 1/4" drive. Avoid impact drivers to prevent damage to the socket and fasteners. Keep the socket clean and lightly lubricated to maintain the colour coding visibility and smooth engagement; inspect regularly for wear before use in professional applications.