Sturtevant Richmont CAL-36 Torque Screwdriver

The Sturtevant Richmont CAL-36 Torque Screwdriver is a micrometer-adjustable, 1/4-inch drive tool designed to apply precise, repeatable torque to small fasteners in aerospace, electronics, and precision assembly. It covers a torque range of 0.8–4 N·m (roughly 7–35 in-lb) and features a dial-style adjustment for fine tuning, with dual scale readings in both metric and imperial units for quick setup.

The CAL-36/4 family, also referred to as a Roto-Torq adjustable torque screwdriver, employs a micrometer adjustment mechanism that locks in a set torque and delivers consistent tightening across multiple cycles. The 1/4 F hex drive supports common small fasteners, and the tool is commonly encountered in aviation and high-reliability manufacturing environments, including aviation-kit applications such as those used in Boeing-related maintenance supplies.

Accuracy is specified as indicated-value precision within approximately ±1% across the torque range, enabling repeatable results for critical fasteners. This Cal 36/4 style screwdriver is built for long-term use in calibrated torque work, offering readable torque settings and reliable performance for technicians needing tight, repeatable control over fastener installation.