Sargent 81-0641 Thrubolt Ring — Genuine OEM Replacement for 8200 & 7800 Series Mortise Locks
The Sargent 81-0641 is a genuine OEM replacement Ring (thrubolt ring) designed for Sargent 8200 Series and 7800 Series mortise locks. This factory-original component ensures proper fit, finish, and long-term performance in commercial and institutional mortise lock applications. When ordering, specify your door thickness to ensure correct fitment. As a direct OEM part, the 81-0641 maintains the mechanical integrity and security standards associated with Sargent mortise hardware.
Institutional Grade Features & Benefits
- Genuine OEM Part: Manufactured to Sargent's original specifications, ensuring a precise drop-in fit with no modification required for compatible 8200 and 7800 Series mortise lock assemblies.
- Correct Thrubolt Engagement: The thrubolt ring provides the critical mechanical connection point that secures the mortise lock cylinder assembly through the door, maintaining structural integrity under repeated use.
- Broad Series Compatibility: Designed to serve both Sargent 8200 Series and Sargent 7800 Series mortise lock platforms — two of the most widely specified commercial mortise lock lines in North America.
- Specify Door Thickness at Order: Because thrubolt length requirements vary with door thickness, indicate your door thickness when placing your order to receive the correctly configured ring for your application.
- Extends Lock Serviceability: Replacing a worn or damaged thrubolt ring with an authentic Sargent OEM part restores proper cylinder retention and extends the operational life of the mortise lock without full hardware replacement.
- Commercial & Institutional Application Ready: Suited for schools, hospitals, government buildings, office facilities, and any high-traffic environment where Sargent 8200 or 7800 Series mortise locks are installed.
Technical Specifications
- Part Number: 81-0641
- Part Type: Ring (Thrubolt Ring)
- Brand: Sargent
- Compatible Series: Sargent 8200 Series Mortise Locks, Sargent 7800 Series Mortise Locks
- Product Class: Mortise Lock Replacement Part
- Door Thickness: Specify at time of order
Technical Details
| Feature | Details |
|---|---|
| Brand | Sargent |
| Model / Part Number | 81-0641 |
| Part Type | Ring (Thrubolt Ring) |
| Product Class | Mortise Lock Replacement Part |
| Series Compatibility | Sargent 8200 Series, Sargent 7800 Series |
| OEM Status | Genuine OEM Replacement Part |
| Door Thickness | Specify at time of order |
| Brand | Sargent |
| Series | Sargent - 8200 Series |
| Part Type | Ring |
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