Sunex 421m 3/4-Inch Drive 21-Mm Impact Socket

The SUNEX Tools 3/4 in. Drive 21mm 6-Point Impact Socket, Model 421M, is designed for professional and industrial applications requiring reliable torque transfer and durability. This impact socket features a 3/4-inch drive and a 21mm socket size, constructed from high-strength chrome molybdenum alloy steel to withstand the demands of high-torque impact tools. Its six-point design ensures maximum contact with fastener flats, reducing the risk of rounding and promoting efficient torque application. The socket is machined to precise tolerances for a secure fit and reduced slippage during use. A black phosphate finish provides excellent corrosion resistance, extending the tool’s service life even in challenging environments. High-visibility laser-etched dual size markings allow for quick identification in low-light conditions. This impact socket is specifically rated for use with impact wrenches and pneumatic tools and is manufactured to meet or exceed ANSI and ASME standards, ensuring both performance and safety. Backed by the SUNEX Tools lifetime warranty with no exclusions, this socket offers long-term reliability for demanding tasks.

• Premium Impact Socket: 3/4 in. drive 21mm 6-point 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