SUNEX Tools 3/8 in. Drive 21mm 6-Point Deep Impact Socket, CR-MO Steel, Model 321MD

The SUNEX Tools 3/8 in. Drive 21mm 6-Point Deep Impact Socket, model 321MD, is engineered for professional and industrial applications requiring reliable torque transfer and durability. This impact socket features a 3/8-inch drive and a 21mm 6-point design that ensures maximum contact with fastener flats, reducing rounding and enhancing torque efficiency. Constructed from high-strength chrome molybdenum alloy steel, it provides excellent durability under high-torque impact use. The socket is precision machined to exacting tolerances for a secure fit that minimizes slippage during operation. Its black phosphate finish offers corrosion resistance, extending the tool’s service life in demanding environments. Designed specifically for use with impact wrenches and pneumatic tools, this socket meets or exceeds ANSI and ASME standards for impact sockets, ensuring dependable and safe performance. High-visibility laser-etched dual size markings facilitate quick identification even in low-light conditions. The SUNEX Tools 3/8 in. Drive 21mm 6-Point Deep Impact Socket is backed by a lifetime warranty, reflecting the brand’s commitment to quality and customer satisfaction.

• Premium Impact Socket: 3/8 in. drive 21mm 6-point deep impact socket for professional and industrial applications
• 6-Point Design: Six-point geometry provides maximum contact with fastener flats, reducing rounding and delivering superior torque transfer
• CR-MO Alloy Steel: Constructed from high-strength chrome molybdenum alloy steel for maximum durability under high-torque impact use
• Impact Rated: Designed specifically for use with impact wrenches and pneumatic tools
• Lifetime Warranty: Backed by SUNEX Tools lifetime warranty with no exclusions
• Precision Fit: Machined to exacting tolerances for secure fastener engagement and reduced slippage
• Dual Size Markings: Features high-visibility laser-etched markings for quick identification even in low-light conditions
• Black Phosphate Finish: Industrial black phosphate coating provides excellent corrosion resistance for long service life
• Performance & Safety: Designed and manufactured to meet or exceed ANSI and ASME standards for impact sockets ensuring reliable, safe performance