Sargent 82-0184 Retaining / Cap Nut | for 7800 & 8200 Series

The Sargent 82-0184 is a genuine OEM replacement retaining nut (also commonly referred to as a cap nut) designed for Sargent 8200 and 7800 Series Mortise Locks. This precision-threaded component is responsible for holding the decorative rose or escutcheon plate firmly against the door surface. By securing the trim to the internal mounting assembly, the 82-0184 prevents "lever sag" and ensures the handle operates smoothly without rattling or shifting.

Precision Hardware & Maintenance Features

• Structural Trim Security: Specifically engineered to provide the final mechanical tension needed to keep your interior and exterior trim properly aligned.
• Direct 8200/7800 Compatibility: Designed to fit the standard mounting posts and spindles of Sargent’s industry-leading architectural mortise locks.
• Vibration Resistant: Manufactured to factory tolerances to resist loosening over time, even in high-traffic commercial environments like schools and hospitals.
• Seamless Installation: The cap nut features a clean, low-profile design that allows the lever and rose to seat perfectly flush against the door face.
• Durable Alloy Construction: Built from high-strength materials to prevent thread stripping during installation or heavy daily use.

Technical Specifications

• Model Number: 82-0184
• Part Type: Retaining Nut / Cap Nut
• Series Compatibility: Sargent 8200 & 7800 Series Mortise Locks
• Function: Secures Rose/Escutcheon to the mounting assembly
• Material: Architectural Grade Steel/Alloy

The Sargent 82-0184 is often the missing piece when a lever handle feels "wobbly" or loose. If the internal thru bolts are tight but the rose still moves, the retaining nut may be stripped or missing. When installing, we recommend hand-threading the nut first to ensure it is properly aligned with the mounting plate threads before using a wrench to snug it down. This prevents cross-threading, which is a common issue with older mortise hardware.

Maintenance Note: For facilities with high-frequency door usage, periodic inspection of these cap nuts is recommended. Keeping them tight prevents unnecessary stress on the internal lock hubs and spindles, extending the overall life of your Sargent hardware.