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The IRWIN INDUSTRIAL TOOL CO 3111002 is a bi-metal door lock installation kit designed for use on both metal and wood doors. The kit streamlines the lock installation process into three steps, giving carpenters, locksmiths, and general contractors a complete, self-contained solution for residential and light commercial door hardware work. It includes two bi-metal hole saws with arbors, a two-sided self-centering jig, a butt hinge template, and a router guide with router bit for face plate mortising. The self-centering jig accommodates both a 2-3/8 inch backset and a 2-3/4 inch backset, covering the two standard residential backset dimensions without additional tooling.
This kit is suited for door installation and replacement projects where a clean, accurate lockset bore is required. It is commonly used by finish carpenters and locksmith technicians working on pre-hung door units, slab door installations, and door hardware retrofits in residential construction and light commercial applications. The bi-metal construction of the hole saws supports use on steel-clad and wood doors without requiring separate tooling for each substrate type.
Designed for use with standard residential door locksets requiring a 2-3/8 inch or 2-3/4 inch backset on metal or wood door construction.
Installation is typically performed by finish carpenters, locksmiths, or general contractors. Ensure the door is secure and stationary before boring. Use the self-centering jig to align the hole saw accurately before applying power to avoid tear-out or misaligned bores. Follow all applicable local building codes for door hardware installation, and wear appropriate eye and hearing protection when operating hole saws and routing equipment.
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