HES 10790036 FP:851M-629 Electric Strike
When you need a fail-secure electric strike for single-door openings with limited frame depth, the HES FP:851M-629 delivers field-proven performance in a compact profile. This mortise-style strike handles medium-traffic commercial applications where controlled egress and code compliance matter—office suites, interior access points, and multi-tenant facilities where paddle handles or lever trim are standard.
Key Features
- Fail-secure operation keeps the door locked during power loss, maintaining perimeter security
- Mortise design integrates cleanly into standard hollow metal and wood frames with minimal modification
- Medium-duty rating suitable for interior commercial doors with moderate traffic loads
- Satin aluminum bronze finish (629) provides corrosion resistance and matches architectural hardware standards
- Compact footprint allows installation in frames where space constraints rule out larger body strikes
- Compatible with cylindrical locksets and mortise locks using standard paddle or lever hardware
- Field-reversible for left-hand or right-hand applications, reducing inventory complexity
- Pre-drilled mounting points simplify alignment and reduce installation time on retrofit projects
The FP:851M-629 addresses the common challenge of adding access control to existing openings without replacing the entire frame assembly. Its mortise form factor fits within the lock prep area, making it particularly useful for upgrading legacy mechanical locksets to electronically controlled access. The fail-secure mode ensures doors remain locked if power is interrupted—critical for office environments, server rooms, and restricted areas where security can't depend on continuous power availability.
Integration with standard access control panels is straightforward via low-voltage wiring, and the strike's compact keeper design accommodates the latch geometry of most commercial-grade locksets without requiring special trim kits. For integrators managing multi-door projects where frame types and hardware vary, the 851M series provides a reliable mortise solution that balances installation flexibility with operational durability. The satin aluminum bronze finish coordinates with existing hardware finishes while resisting wear in moderate-use applications.
