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The APEX 39873N is a 4-inch pillar file designed for precision filing work in tight slots, keyways, and narrow recesses. It features safe edges on both sides, meaning the uncut edges will not damage adjacent surfaces during use. The file carries a Cut 2 (second cut) tooth pattern, which removes material at a moderate rate while leaving a relatively smooth finish. Constructed from steel with a hard-stamped marking style, this file is built for repeated use in metalworking, fabrication, and maintenance applications. It is a standard tool for machinists, millwrights, pipefitters, and general tradespeople who need controlled, accurate material removal.
This pillar file is suited for work on ferrous metals, non-ferrous metals, and similar hard materials where a narrow profile is required. Its slim cross-section makes it the right choice for filing slots, grooves, and flat surfaces in confined spaces. The safe-edge design is particularly useful when filing up to a shoulder or step where the adjacent face must remain undamaged. It fits standard file handles and works well in both bench and field maintenance settings.
Designed as a standard replacement or supplemental pillar file compatible with conventional file handles; suitable for general metalworking, maintenance, and fabrication applications where a narrow second-cut file is required.
Pillar files are hand tools installed by machinists, maintenance technicians, and tradespeople requiring no power source or special tooling. Always fit the tang into a properly sized file handle before use to prevent hand injury. Keep the file clean and free of metal debris by using a file card regularly to maintain cutting efficiency. Never use a file as a pry bar or striking tool, as the hardened steel is brittle and can fracture.
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