3/8" Drive 12-Point Metric 21 mm Shallow Socket - J.H. Williams

The J.H. Williams JHWBM-1221 3/8" Drive 12-Point Metric 21 mm Shallow Socket is engineered for the precise demands of professional automotive and industrial environments. Its compact, shallow design allows for reliable engagement on 21 mm metric fasteners in confined spaces where standard sockets are impractical, providing technicians with consistent, professional-grade performance and improved access.

Key Features

• 3/8" Drive, 21 mm Metric: Seamlessly compatible with standard 3/8" drive ratchets and extensions, this socket is ideal for common 21 mm metric fasteners found on passenger cars, light trucks, and various fleet vehicles.
• 12-Point SUPERTORQUE® Design: Features SUPERTORQUE® lobular openings for greater turning power without deforming fasteners. This design enables quick engagement on 6 and 12-point fasteners, offers increased access angles in restricted tool swing situations, and helps minimize fastener rounding on worn or hard-to-reach hardware.
• Shallow Profile: The reduced overall length significantly improves access in tight locations such as around strut towers, control arms, engine accessory mounts, and brackets where deep sockets are impractical.
• Professional-Grade Construction: Built in the USA from alloy steel with a high-polished chrome finish, this socket is designed to withstand repeated high-torque applications with hand tools. Its robust materials and geometry ensure exceptional durability in demanding shop conditions. Note: This socket is not suitable for impact use.

Applications

This 21 mm shallow socket is commonly utilized for lug-related hardware where a 3/8" drive is preferred, suspension brackets, engine accessory mounts, and general under-hood fasteners on both domestic and import vehicles. It is also an effective tool for maintenance routines involving industrial machinery, material handling equipment, and plant systems that incorporate 21 mm metric fasteners. Professional technicians, fleet mechanics, and industrial maintenance crews will find this socket invaluable for service work in cramped or obstructed areas.

Specifications

• Manufacturer: J.H. Williams
• Model Number: JHWBM-1221
• Drive Size: 3/8"
• Socket Type: 12-point
• Measurement System: Metric
• Size: 21 mm
• Profile: Shallow
• Weight: 0.18 lb
• Finish: High-Polished Chrome
• Country of Origin: USA