SHOCKWAVE™ Impact Duty 5/16" x 1-7/8" Magnetic Nut Driver

Milwaukee 49-66-4503 — SHOCKWAVE™ Impact Duty Magnetic Nut Driver (5/16" × 1-7/8")

What it is

• Type: Magnetic nut driver bit (impact-rated accessory)
• Series: SHOCKWAVE™ Impact Duty
• Model: 49-66-4503
• Drive size: 5/16" nut driver
• Shank: 1/4" hex (fits impact drivers and drill/drivers)
• Length: 1-7/8" overall
• Material: Heat-treated alloy steel

What it does

This is a fastening accessory, not a cutting or drilling tool. It’s used to:

• Drive 5/16" hex nuts and bolts
• Speed up repetitive fastening with an impact driver
• Hold fasteners in place magnetically during installation

Typical uses:

• Electrical and mechanical installs
• HVAC and light fabrication
• General construction fastening work

Key features

• Strong internal magnet holds fasteners securely during use
• Built from heat-treated CUSTOM ALLOY76™ steel for durability
• SHOCK ZONE™ design reduces breakage under impact torque
• Color-coded ring for quick size identification
• Designed specifically for impact drivers and drill/driver use