Firstinfo Precision Torque Screwdriver 1/4" Hex 2-12 in-lbs

Precision torque screwdriver for 2–12 in-lb tasks

This Firstinfo torque screwdriver covers a 2 to 12 in-lb range in 0.1 in-lb increments. A 1/4 inch universal hex holder accepts standard bits or a square-drive socket adapter. The cam mechanism slips automatically when the set torque is reached, preventing over-tightening. A calibration certificate confirms ±6 % accuracy to ASME B107.300-2010 and ISO 6789.

Check bit compatibility

Verify that your fasteners require torque within the 2 to 12 in-lb window; the tool cannot be set lower or higher. Ensure the bits you plan to use fit a 1/4 inch hex shank, as no other drive size is supported. The quick-release collar holds bits securely yet frees them with a single press. No power source or external calibration equipment is needed for daily use.

Consistent slip-action holds repeatable torque

When the preset value is reached the cam slips smoothly rather than clicking, delivering the same release point on every fastener. The spring-loaded locking collar keeps the scale fixed during repetitive cycles, so the 0.1 in-lb resolution does not drift. Aluminium scale and tube construction resists wear during extended assembly sessions. The mechanism remains within its certified ±6 % tolerance across sustained tightening sequences.