Proto J52201 Metric Socket Set 3/8 Drive 10pc 6pt

Product Description

The PROTO J52201 is a 10-piece metric standard socket set built around a 3/8 inch drive. Each socket features a 6-point design for firm engagement on fastener flats, reducing the risk of rounding hardware under torque. The set spans 10 mm through 19 mm, covering the most common metric fastener sizes encountered in mechanical and HVAC service work. At 1.59 pounds, the set is compact enough for a tool bag while covering a full working range for general trade use. HVAC technicians, plumbers, electricians, and mechanical contractors will find this set suited to panel fasteners, equipment mounting hardware, and component replacement tasks.

This socket set is appropriate for residential and light commercial service work where metric fasteners are standard. The 3/8 inch drive platform is a common choice for mid-torque applications, fitting a wide range of ratchets, extensions, and breaker bars already in a tradesperson's kit. The 10 mm through 19 mm range addresses the majority of metric hex fasteners found on air handlers, condensing units, electrical enclosures, and mechanical equipment frames.

Key Features

• 10-piece set covering 10 mm through 19 mm in metric sizes
• 3/8 inch drive fits standard ratchets, extensions, and adaptors
• 6-point socket geometry for reduced fastener rounding under load
• Compact 1.59 pound total weight for tool bag portability
• Standard socket profile for general mechanical and trade service work

Compatibility

Designed as a standard 3/8 inch drive metric socket set for general trade and mechanical service applications requiring 10 mm through 19 mm fastener engagement.

Installation Notes

Always power down or de-energize equipment before removing fasteners on electrical or HVAC enclosures. Use the correct drive torque for the application and avoid using extensions or adaptors that could reduce drive integrity under high torque. Inspect sockets for cracks or wear before use and replace any damaged socket immediately.