Chicago-latrobe 3G-OTH-211246 — Technical Specifications

The CHICAGO-LATROBE Spiral Flute Tap (MPN 313525) is an oversized spiral-flute tap with a 1/4"-20 UNC thread. It features an H11 / 1B tolerance, 3 flutes, and a semi-bottoming chamfer, designed for threading applications requiring precise chip evacuation.