Sargent 6251CMK Temporary Construction Removable Core Master Key

Product Description

The SARGENT 6251CMK is a 6-pin temporary construction master key designed for use with removable core cylinders. It allows controlled access to a facility during the construction phase, then can be removed and replaced with permanent keyway cores at project completion. Compatible with the 64-, 11-64-, DG1-64, DG2-64, and DG3-64 series removable core cylinder lines, the 6251CMK is specified by locksmiths, security contractors, and commercial construction teams when temporary keying systems are required. Its controlled-distribution status means key blanks are available only through authorized channels, limiting unauthorized duplication.

The 6251CMK is intended for commercial and institutional construction projects where removable core cylinders are installed in mortise, rim, or component hardware. The temporary construction master key function allows a single key to operate all cores on a jobsite during active construction. Once the owner takes possession, cores are reset or swapped to the permanent keying system. This workflow is standard on commercial builds, schools, healthcare facilities, and multi-unit residential projects using SARGENT 64-series cylinder platforms.

Key Features

• 6-pin configuration matches the 64-, 11-64-, DG1-64, DG2-64, and DG3-64 series removable core cylinders
• Temporary construction master key function provides jobsite-wide access during the build phase
• Removable core design allows fast cylinder conversion from construction keying to permanent keying without replacing hardware
• Controlled distribution limits key blank access to authorized dealers, reducing duplication risk
• 1-year limited manufacturer warranty

Compatibility

Designed for use with SARGENT 64-, 11-64-, DG1-64, DG2-64, and DG3-64 series removable core cylinders.

Installation Notes

Installation and keying of removable core cylinders should be performed by a licensed locksmith or qualified security hardware professional. Before swapping or resetting cores, verify the door hardware is not under load and the facility access plan has been reviewed with the general contractor or owner. Temporary construction keys should be collected and accounted for at project closeout prior to permanent core installation. Follow local building and security codes governing key control and access management on commercial projects.