Sargent 77-3430 LW1/KW1 Cylind...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$205.33
$148.65
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Sargent 77-3430 LW1/KW1 Cylinder with Inside Escutcheon, Bright Brass

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Model: 77-3430 3

In Stock (leaves warehouse same day if ordered before 3pm ET)

$205.33
$148.65
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Sargent 77-3430 LW1/KW1 Cylinder with Inside Escutcheon in Bright Brass

The Sargent 77-3430 is a commercial-grade LW1/KW1 cylinder with inside escutcheon finished in Bright Brass, designed as a precision replacement part for compatible Sargent mechanical lock applications. This cylinder-only component is engineered to integrate seamlessly with Sargent lock systems, providing a reliable keying solution for commercial door hardware installations. Finished in Bright Brass, it delivers both functional performance and a polished aesthetic suitable for professional environments.

Key Features

  • LW1/KW1 Keyway Compatibility: Designed specifically for LW1 and KW1 keyway profiles, ensuring precise fit and function within compatible Sargent lock configurations.
  • Inside Escutcheon Included: Supplied as a cylinder-only assembly with inside escutcheon, providing a complete interior trim solution for the cylinder opening.
  • Bright Brass Finish: Features a polished Bright Brass finish that coordinates with standard commercial door hardware trim for a consistent, professional appearance.
  • Commercial-Grade Construction: Built to meet the demands of commercial applications, delivering the durability and dependability required in high-use environments.
  • Genuine Sargent Replacement Part: An authentic Sargent lock part engineered for accurate fit and performance in compatible Sargent mechanical lock systems.
  • Drop-In Replacement: Configured as a direct replacement component, minimizing installation complexity and downtime for maintenance and service work.

Technical Specifications

  • Department: Door Hardware
  • Product Category: Mechanical Locks
  • Product Group: Parts and Accessories
  • Subcategory: Parts and Accessories
  • Product Subgroup: Parts and Accessories
  • Product Type: Escutcheons
  • Parts and Accessories Type: Replacement Parts
  • Commercial/Residential: Commercial
  • Product Model: 77-3430
  • Features: Sargent Lock Parts

Typical Applications

  • Commercial Office Buildings
  • Educational Facilities
  • Healthcare Institutions
  • Retail Establishments
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities

Why Sargent 77-3430?

Sargent mechanical lock components are manufactured to exacting commercial standards, ensuring that replacement parts like the 77-3430 integrate precisely with existing Sargent lock systems. The LW1/KW1 cylinder with inside escutcheon delivers consistent, professional-grade performance engineered for the reliability demands of commercial door hardware applications.

Manufacturer Resources

Product Specs

Department:
Door Hardware
Product Category:
Mechanical Locks
Product Group:
Parts and Accessories
Subcategory:
Parts and Accessories
Product Subgroup:
Parts and Accessories
Product Type:
Escutcheons
Parts and Accessories Type:
Replacement Parts
Commercial/Residential:
Commercial
Product Model:
77-3430
Features:
Sargent Lock Parts

Sargent 77-3430 3 – Frequently Asked Questions

1) What is included with the Sargent 77-3430 cylinder, and is the outside trim part of it?
The Sargent 77-3430 ships as a cylinder assembly with the inside escutcheon, which covers the interior side of the cylinder opening. It is a cylinder-and-inside-trim component only, so any exterior trim, lock case, or chassis on the door has to already be in place or ordered separately.
2) Will the Sargent 77-3430 work with my existing keys?
It is built for the LW1 and KW1 keyway profiles. If your Sargent keys are cut on an LW1 or KW1 keyway, this cylinder can be keyed to match them; if your building is keyed on a different Sargent keyway section, this is the wrong cylinder for that system. Check the keyway stamp on your existing cylinder or the bitting record before ordering.
3) Can a Schlage CO Series exterior escutcheon be used in place of a Sargent 77-3430 cylinder with inside escutcheon?
No. The Sargent 77-3430 is a mechanical lock replacement part - an LW1/KW1 cylinder supplied with an inside escutcheon for the cylinder opening. The Schlage Electronics 47260707 is an exterior escutcheon only for CO100 cylindrical and mortise locks with a keypad, supplied with fasteners and an O-ring, and it carries no cylinder. The two serve different sides of different lock platforms: one is a keyed mechanical cylinder assembly, the other is the outside keypad trim of an electronic access control lock.
4) What finishes does the Sargent 77-3430 cylinder and inside escutcheon come in?
Eleven finishes are offered: 03 bright brass clear coated, 04 satin brass clear coated, 09 bright bronze clear coated, 10 satin bronze clear coated, 10B dark oxidized satin bronze oil rubbed, 10BL dark oxidized satin bronze clear coated, 15 satin nickel plated clear coated, 20D dark statuary bronze lacquered, 26 bright chromium plated over nickel, 32 bright stainless steel, and 32D satin stainless steel. That range lets you match the escutcheon to the levers and pulls already on the opening rather than settling for a near miss.
5) Is the 77-3430 a genuine Sargent part or an aftermarket copy?
It is a genuine Sargent replacement part, catalogued under Sargent lock parts, so it is dimensioned to drop into the Sargent mechanical lock it was made for without filing or shimming. For a property manager standardized on Sargent, that matters more than it sounds: aftermarket cylinders often will not accept the same keying or seat correctly under the trim.
6) Can I standardize a whole building's Sargent locks on this cylinder?
Yes, provided the openings run LW1 or KW1 keyways and use Sargent mechanical locks that take this cylinder and inside escutcheon. Ordering one finish across the building keeps the trim consistent, and keeping a single keyway section across the site is what lets a master key system stay simple as doors get serviced.
7) Will an MS Sedco ESC escutcheon plate work as a replacement for a Sargent 77-3430?
No. The MS Sedco ESC is a decorative stainless escutcheon plate made for R4 and R6 round switches - it is switch trim, with no cylinder and no lock function. The Sargent 77-3430 is a commercial LW1/KW1 keyed cylinder supplied with an inside escutcheon as a replacement part for compatible Sargent mechanical lock systems. If you are replacing keyed hardware in a door, the 77-3430 family is the correct part; the MS Sedco plate belongs behind a push switch or actuator.
8) Is this cylinder rated for commercial door traffic or is it a residential part?
Commercial. The 77-3430 is a commercial mechanical lock component, used in offices, schools, healthcare, retail, government buildings, multi-tenant residential, and warehouses. It is not a light-duty residential cylinder.
9) For matching existing dark bronze trim across a building, does the Sargent 77-3430 or the Schlage CO escutcheon give more finish choice?
The Sargent 77-3430 cylinder with inside escutcheon is offered across eleven finishes, including 10 Satin Bronze Clear Coated, 10B Dark Oxidized Satin Bronze Oil Rubbed, 10BL Dark Oxidized Satin Bronze Clear Coated and 20D Dark Statuary Bronze Lacquered, so there are several bronze tones to match against. The Schlage Electronics 47260708 CO Series exit trim escutcheon is offered in Aged Bronze. Keep in mind the two are for different lock platforms, so finish alone should not drive the choice - the 77-3430 is a keyed mechanical cylinder part and the 47260708 is keypad trim.
How fast can I get the Sargent 77-3430 3 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Sargent 77-3430 3 come with a warranty?
Absolutely. The Sargent 77-3430 3 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Sargent 77-3430 3?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Sargent 77-3430 3 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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