Klein Tools Torque Wrench 57010 1/2 Inch Drive 30 To 250 Foot Pound (Micro Adjustable Quick Release NIST Traceable Calibration)

Klein Tools 57010 1/2-Inch Drive 30-250 Ft-Lb Micro-Adjustable Torque Wrench

The Klein Tools 57010 is a high-precision 1/2-inch square drive micro-adjustable torque wrench designed for exact fastener tensioning across a 30 to 250 ft-lb (40.7 to 340.0 Nm) working range. Constructed with a heavy-duty stainless steel handle, this 24.25-inch long, 3.7 lb mechanical ratcheting wrench includes a quick-release drive lever and a dual scale display for effortless torque setting readouts. Compliant with ASME standards via an included N.I.S.T. traceable calibration certificate guaranteeing ±4% accuracy, this industrial wrench allows power utility workers, heavy equipment mechanics, and pipe fitters to prevent over-torquing on critical structural bolts, flanges, and busbar connections.

Best Used For:

• Electrical Busbar & Transformer Bolting: Applying exact foot-pound torque specs on high-voltage copper conductors to eliminate loose connections and thermal hot spots.
• Heavy Equipment & Fleet Maintenance: Torquing wheel lug nuts, suspension hardware, and engine head bolts within a 30 to 250 ft-lb capacity range.
• Industrial Piping & Flange Assembly: Securing high-pressure flange bolts evenly to maintain gasket integrity and meet engineering bolt tension standards.

Key Performance & Safety Features

• Micro-Adjustable Tension Scale: Delivers precise incremental torque selection from 30 to 250 ft-lb (40.7 to 340.0 Nm) for critical fastening accuracy.
• N.I.S.T. Traceable Calibration: Certified to meet ASME standards with a guaranteed ±4% accuracy rating for regulated industrial compliance.
• Quick-Release Ratcheting Head: Features a smooth 1/2-inch square drive quick-release button for swift socket changes on active jobsites.
• Stainless Steel Handle Construction: Ergonomic metal handle profile offers maximum hand leverage, enhanced corrosion resistance, and durable grip control.
• Audible Impulse Click System: Emits a distinct mechanical impulse click when the target torque value is reached to prevent bolt over-tightening.

What's Included

• (1) Klein Tools 1/2" Drive Micro-Adjustable Torque Wrench (30 to 250 ft-lb)
• (1) N.I.S.T. Traceable Calibration Certificate
• (1) Protective Hard Storage Case

Technical Specifications

Pro-Tip: Always wind the micro-adjustable scale back down to its lowest setting (30 ft-lb) before storing the torque wrench in its case. Leaving the internal spring under tension over time degrades calibration accuracy and voids N.I.S.T. certification specs.