Klein Tools Torque Wrench 57005 3/8 Inch Drive 30 To 250 Inch Pound (Micro Adjustable Quick Release NIST Traceable Calibration)

Klein Tools 57005 3/8-Inch Drive 30-250 In-Lb Micro-Adjustable Torque Wrench

The Klein Tools 57005 is a high-accuracy 3/8-inch square drive micro-adjustable torque wrench designed for low-torque fastener applications across a 30 to 250 in-lb (3.4 to 28.3 Nm) capacity range. Constructed with a heavy-duty stainless steel handle, this 10.625-inch long, 1.2 lb mechanical driver features a quick-release lever and a high-visibility 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 enables electricians, instrument technicians, and HVAC specialists to eliminate over-torquing on delicate terminal blocks, control boards, and sensitive aluminum equipment mounts.

Best Used For:

• Electrical Panel & Breaker Terminal Wiring: Applying exact inch-pound torque settings on copper lugs, terminal strips, and circuit breaker clamps to satisfy National Electrical Code (NEC) torque requirements.
• Sensitive Instrumentation & Controls: Torquing delicate sensor housings, relay contacts, and electronic enclosure hardware without stripping threads or cracking casings.
• HVAC Control Board & Valve Assembly: Securing precision HVAC actuator linkages, control valves, and small aluminum flange bolts within a 30 to 250 in-lb target range.

Key Performance & Safety Features

• Micro-Adjustable Tension Scale: Delivers precise incremental torque selection from 30 to 250 in-lb (3.4 to 28.3 Nm) for sensitive precision fastening.
• N.I.S.T. Traceable Calibration: Certified to meet ASME standards with a guaranteed ±4% accuracy rating for regulated commercial compliance.
• Quick-Release Ratcheting Head: Features a smooth 3/8-inch square drive quick-release button for swift socket swaps on active jobsites.
• Stainless Steel Handle Construction: Ergonomic metal handle profile offers durable leverage, maximum chemical resistance, and non-slip grip control.
• Audible Impulse Click Mechanism: Emits a distinct mechanical click when target torque value is reached to prevent bolt over-tightening.

What's Included

• (1) Klein Tools 3/8" Drive Micro-Adjustable Torque Wrench (30 to 250 in-lb)
• (1) N.I.S.T. Traceable Calibration Certificate
• (1) Protective Hard Storage Case

Technical Specifications

Pro-Tip: Pay strict attention to measurement units: this wrench operates in inch-pounds (in-lb), not foot-pounds (ft-lb). When torquing panel breakers specified at 20 ft-lb, multiply by 12 to set the micro-adjustable collar to 240 in-lb to ensure proper electrical clamping without damaging the equipment.