Brownells U.S. Screw Checker

The Brownells Screw Chek'r US is a steel, workshopgrade measuring tool built to help gunsmiths and machinists quickly and accurately identify screw sizes and thread pitches, making hardware selection faster and more reliable. Its clear markings and straightforward layout ensure easy readings, while the durable steel construction stands up to constant use in demanding shop environments. Designed to support a wide range of thread sizes and pitches, it streamlines everything from part replacement to new builds with dependable precision.