Socket adapter Makita model M B-40288 — 10 mm socket with 1/4" hex interchangeable holder

Makita M B-40288 socket adapter is a compact accessory that converts a 10 mm square socket connection into a 1/4" hex drive. Designed for compatibility with standard 10 mm sockets and 1/4" hex bits, the adapter allows users to apply hex screwdriver bits using socket tools or to use 10 mm sockets with tools that accept 1/4" hex chucks. Its small size and simple geometry make it suitable for integrating different fastening components in workshops or on-site jobs.

Advantages

The adapter provides a secure mechanical connection between a 10 mm socket and a 1/4" hex bit without modifying existing tools. It enables fast interchangeability of bits and sockets, reducing the need for multiple specialized adapters. Constructed to withstand typical fastening and loosening loads, the accessory maintains alignment and torque transfer between driving tool and fastener. Its compact form factor improves access in confined spaces compared with larger adapters or universal joints.

Suitable for

• Using 1/4" hex screwdriver bits with 10 mm socket drives
• Adapting 10 mm sockets for use with tools that accept 1/4" hex chucks
• Workshop assembly and maintenance tasks requiring mixed bit and socket use
• Field service and repair work where tool versatility reduces carry weight

Key specifications

• Input connection: 10 mm square socket
• Output connection: 1/4" hex drive
• Material: metal alloy suitable for hand and power tool interfaces
• Application: manual and powered fastening and loosening operations
• Form factor: compact, low-profile adapter for confined-space access

How to use

Insert the 10 mm square end of the adapter into a compatible socket or ratchet, ensuring it seats securely. Insert a 1/4" hex bit into the hex end until it locks or seats firmly, depending on the bit design. Operate the driving tool at appropriate torque settings for the fastener and bit in use; avoid exceeding recommended torque for the bit to prevent damage. After use, remove the bit and adapter, and store them in a tool organizer to prevent loss.

Usage recommendations

Use the adapter with bits and sockets that match the specified 10 mm square and 1/4" hex interfaces. For high-torque applications, select bits and sockets rated for the required torque and inspect the adapter regularly for wear or deformation. Avoid using the adapter as a bearing surface or subjecting it to side loads that may reduce service life.