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Sargent 42 Mortise Cylinder — 1-1/4" Length, LA Keyway, 40 Series
The Sargent 42 Mortise Cylinder is the standard 40 Series solid brass mortise cylinder engineered for use across the Sargent mortise lock product line. With a 1-1/4" (32mm) body length and the popular LA keyway, this cylinder is a go-to replacement or new-installation component for commercial mortise locksets in offices, healthcare facilities, educational buildings, and institutional applications.
Built to Sargent's proven 40 Series specifications, the No. 42 cylinder features a 6-pin tumbler configuration in a solid brass, 1-5/32" (29mm) diameter housing — delivering reliable, long-term performance in high-traffic door openings. The LA keyway falls within Sargent's Open Conventional key system tier, making it a practical choice for facilities maintaining or expanding an existing Sargent keyed system.
Key Features & Benefits
- 40 Series standard mortise cylinder — direct fit for Sargent mortise locks across the product family
- Solid brass construction — corrosion-resistant body and cap for lasting durability
- 6-pin tumbler — reliable security for most commercial keying applications; 7-pin also available on size 42 and above
- LA keyway — integrates with existing Sargent LA key systems; alternative Sargent keyways available by quote
- Standard Sargent offset cam 13-0664 included — ready for installation in mortise lock applications without additional hardware ordering
- No. 97 (1/4" trim ring) rosette and compression spring included as standard accessories
- Supplied 1-bitted with 2 nickel silver keys — ready for immediate use or integration into a master key system
- Stock finish: US26D (satin chrome) — a neutral, professional finish suited to most commercial interiors
Applications
- Replacement mortise cylinder for Sargent mortise locksets (office, storeroom, classroom, and other functions)
- New construction installations specifying Sargent 40 Series cylinders
- Facilities expanding or maintaining an existing Sargent LA keyway master key system
- Commercial, institutional, healthcare, and educational door hardware projects
Keyway & Finish Options
This listing is configured with the LA keyway in US26D (satin chrome). Need a different Sargent keyway? Alternative keyways are available — contact us for a quote. Additional finishes available by quote include US3, US9, US10, US10B, US10BL, US15, US20D, US26, US32, and US32D.
Technical Details
| Feature | Details |
|---|---|
| Manufacturer | Sargent Manufacturing (ASSA ABLOY) |
| Series | 40 Series Mortise Cylinder |
| Cylinder Number | No. 42 |
| Body Length (Dim. X) | 1-1/4" (32mm) |
| Diameter | 1-5/32" (29mm) |
| Pin Count | 6-pin standard (7-pin available on size 42 and up) |
| Keyway | LA (Open Conventional key system) |
| Material | Solid brass cylinder body |
| Standard Cam | Sargent offset cam 13-0664 |
| Included Accessories | No. 97 rosette (1/4" trim ring), compression spring, 2 nickel silver keys |
| Keying | 1-bitted (keyed differently), 2 keys each |
| Stock Finish | US26D (satin chrome) |
| Other Finishes (by quote) | US3, US9, US10, US10B, US10BL, US15, US20D, US26, US32, US32D |
| General - US Finishes | US26D - Satin Chrome or US4 - Satin Brass |
| Brand | Sargent |
| Sargent Mortise Cams | Standard |
| Cylinder Length | 1-1/4" |
| Cylinder Options | LA Keyway |
| Key Length | 5 Pin, 6 Pin |
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