Socket bit 3/8" hex 21 mm NEO tools 08-181

NEO tools Socket bit 3/8" hex 21 mm (08-181) is a hand tool accessory designed to work with 3/8" drive ratchets, torque wrenches and extension bars. The 6-point (hex) profile provides a snug fit on 21 mm hex-head bolts and nuts, reducing slippage and enabling accurate torque transfer. Made for routine mechanical and maintenance work, this socket bit is intended to provide consistent engagement with standard 21 mm fasteners common in automotive and machinery applications.

Advantages

The 3/8" drive hex 21 mm socket bit offers a precise 6-point connection that minimizes rounding of fastener corners and improves grip under load. Its compatibility with common 3/8" drive tools makes it versatile for use with ratchets, torque wrenches and extensions. The compact bit form factor allows access in confined spaces where full-size sockets may be impractical, and the standardized 21 mm size covers many automotive and mechanical fasteners.

Suitable for

• Automotive maintenance and repair tasks involving 21 mm hex fasteners
• General mechanical assembly and disassembly
• Use with 3/8" drive ratchets, torque wrenches and extension bars
• Maintenance work in workshops, garages and industrial environments

Key specifications

• Drive size: 3/8" (female drive for compatibility with 3/8" tools)
• Bit profile: 6-point hex
• Head size: 21 mm (suitable for 21 mm hex-head bolts and nuts)
• Form factor: socket bit for use with ratchets, torque wrenches and extensions
• Intended use: fastening and loosening of hex-head fasteners

How to use

Insert the socket bit into the 3/8" drive of a compatible ratchet, torque wrench or extension bar until it seats securely. Engage the 21 mm hex profile onto the fastener head, ensuring full contact on all six points to reduce slippage. Apply torque evenly in the required direction; when using a torque wrench, observe the specified torque setting for the fastener. After use, remove the bit from the drive and store it in a protective holder or toolbox to avoid damage.

Usage recommendations

Check that the fastener and socket bit are clean and free of debris before use. Use the 6-point socket bit for high-torque applications to reduce the risk of rounding fastener corners. When precise torque is required, use a calibrated torque wrench and avoid using the bit with impact drivers unless it is specifically rated for impact use.