Socket wrench (hollowcore) MILWAUKEE 5.5 mm

The MILWAUKEE hollowcore socket wrench 5.5 mm is a single-size, slim socket designed to fit over longer bolts, studs or threaded rods where a conventional closed socket would not reach. Made for manual or ratchet use with compatible drive adapters, this hollowcore socket provides access in confined spaces and on components where a protruding fastener requires a pass-through design. The compact 5.5 mm opening is suitable for small fasteners commonly found in mechanical, electrical and installation tasks.

Advantages

The hollowcore construction allows the socket to pass over extended bolts and studs while maintaining sufficient wall strength for reliable torque transfer. Its single-size design simplifies tool selection when a precise 5.5 mm fit is required. Compatible with standard drive adapters, the socket is versatile for hand-operated ratchets or other compatible hand tools. The slim profile helps reach fasteners in tight or recessed locations without removing surrounding components.

Suitable for

• Fastening and loosening small bolts and nuts with a 5.5 mm recess
• Working on assemblies with long protruding studs or threaded rods
• Mechanical repairs where space is limited
• Electrical installations and panel work requiring pass-through access
• Maintenance tasks in automotive, appliance or equipment servicing

Key specifications

• Socket type: hollowcore (pass-through) single-size socket
• Nominal size: 5.5 mm
• Compatibility: designed for use with compatible drive adapters and hand ratchets
• Profile: slim, low-profile body for access in confined spaces
• Intended use: manual fastening and loosening of small fasteners

How to use

Select a compatible drive adapter or ratchet that accepts the socket and ensure secure attachment before applying torque. Slide the hollowcore socket over the protruding bolt or stud until the socket seats on the fastener head. Apply steady, controlled force to tighten or loosen the fastener; avoid impacts or excessive torque beyond the socket’s intended manual use. After use, clean any debris from the socket bore and store it with other hand tools to preserve fit and finish.

Usage recommendations

Use the socket only with hand-operated ratchets or compatible manual adapters; avoid extended use with impact tools unless the tool is specifically rated for hollowcore sockets. Inspect the socket for wear or deformation before each use and replace if damaged. For improved access, pair the hollowcore socket with extension bars or swivel adapters designed for your drive size.