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Schlage B590-295 Cam Screw for L Series Non-Modular Mortise Conventional Cylinder Over 1-3/8 in.
Model: SCH-B590-295
Schlage B590-295 Cam Screw for L Series Non-Modular Mortise Conventional Cylinder Over 1-3/8 in.The Schlage B590-295 is a purpose-built cam screw designed for use with L Series Non-Modular Mortise...
Schlage
$16.98
Schlage B590-299 Plug Extension for Modular Cylinder, 1-5/8" / 1-3/4" Commercial Replacement Part
The Schlage B590-299 is a precision-engineered plug extension designed for use with Schlage modular cylinders. Accommodating door thicknesses of 1-5/8" and 1-3/4", this commercial-grade replacement component ensures a proper fit and reliable operation when servicing or upgrading Schlage cylinder assemblies. Manufactured as a genuine Schlage part, it delivers the dimensional accuracy and material quality expected from a trusted commercial hardware brand.
Key Features
- Dual Door Thickness Compatibility: Designed to accommodate 1-5/8" and 1-3/4" door preparations, providing flexibility across common commercial door profiles.
- Modular Cylinder Application: Specifically engineered for use with Schlage modular cylinders, ensuring precise fit and dependable function within the cylinder assembly.
- Genuine Schlage Replacement Part: Manufactured to Schlage's commercial-grade standards, maintaining the integrity of the original lock system during service or repair.
- Commercial-Grade Construction: Built to meet the performance demands of commercial applications where durability and dimensional precision are essential.
- Direct-Replacement Design: Serves as a purpose-built component for restoring or extending cylinder functionality without requiring full assembly replacement.
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: Cylinders
- Parts and Accessories Type: Replacement Parts
- Commercial/Residential: Commercial
- Product Model: B590-299
- Features: Schlage Parts
Typical Applications
- Commercial Office Buildings
- Educational Facilities
- Healthcare Institutions
- Retail Establishments
- Industrial and Warehouse Facilities
- Multi-Tenant Residential Properties
- Government and Municipal Buildings
Why Schlage B590-299?
The Schlage B590-299 Plug Extension is a genuine replacement component engineered to exact dimensional tolerances for 1-5/8" and 1-3/4" door applications, ensuring reliable compatibility with Schlage modular cylinder assemblies. For facility managers and locksmiths servicing commercial door hardware, sourcing an authentic Schlage part eliminates guesswork and preserves the performance standards of the original installation.
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:
- Cylinders
- Parts and Accessories Type:
- Replacement Parts
- Commercial/Residential:
- Commercial
- Product Model:
- B590-299
- Features:
- Schlage Parts
Schlage B590-299 – Frequently Asked Questions
1) What does the Schlage B590-299 plug extension actually do?
The B590-299 is a plug extension used inside a Schlage modular cylinder. It extends the cylinder plug so the assembly sits correctly in the door prep instead of forcing you to replace the whole cylinder assembly when you are servicing or reconfiguring the lock. It is a component, not a complete cylinder, so it only makes sense if you already have a Schlage modular cylinder in hand.
2) Will the Schlage B590-299 work on a 1-3/4 inch commercial door?
Yes. The B590-299 is set up for door thicknesses of 1-5/8 and 1-3/4 inches, which covers the standard commercial door at 1-3/4 inches as well as the 1-5/8 inch prep. Outside those two thicknesses it is the wrong extension.
3) Can I buy the Schlage B590-299 as a complete keyed cylinder?
No. The B590-299 is a plug extension only, with no keyway, plug, or keys. If you need a full cylinder rather than a service component, look at complete units such as the Detex MC65 mortise cylinder in Schlage C keyway, or a Corbin Russwin 1000 Series Grade 1 mortise cylinder in 1-1/2 inch with an A02 straight cam.
4) Will a BEST 1C core or Corbin Russwin mortise cylinder work in place of a Schlage B590-299 plug extension?
No. The Schlage B590-299 is a plug extension, a component that goes inside a Schlage modular cylinder assembly to suit 1-5/8 inch and 1-3/4 inch door thicknesses. The BEST 1C Series is a standard 5-pin cylinder core and the Corbin Russwin 1000, at 1-1/2 inch length with an A02 straight cam, is a complete Grade 1 mortise cylinder. Those are whole keyed cylinders that replace a cylinder; the B590-299 is an internal length part that lets a Schlage modular cylinder be built to the correct depth. If the existing Schlage cylinder body is sound and only the depth is wrong, the plug extension is the part; if the cylinder itself is being swapped out, a complete cylinder like the 1C core or the CR1000-112 is what the opening needs.
5) Is the Schlage B590-299 a genuine Schlage part or an aftermarket copy?
It is a genuine Schlage component, catalogued under model B590-299 and built to Schlage's commercial-grade standards. For a facility standardized on Schlage cylinders, that matters: an aftermarket extension of the wrong length changes how the plug sits and how the cam or tailpiece engages.
6) I need a replacement cylinder for a Sargent or Kwikset lock, not Schlage. What should I look at?
The B590-299 is Schlage-specific and will not help you there. For Sargent knob and lever locks, the Kaba Ilco 1579 Series cylinder is made for that application. For Kwikset single cylinder deadbolts, the Medeco 1012040 is a 6-pin lazy motion rim cylinder built for them. Arrow JL interconnected locks and Emtek handlesets are covered by the Medeco 1065140 5-pin retrofit cylinder.
7) Does the Schlage B590-299 fit an interchangeable core system?
No. The B590-299 is a plug extension for Schlage modular cylinders, which is a different construction from a small or large format interchangeable core. If your facility runs IC, you are looking for a core instead, such as a BEST 1C Series standard 5-pin core, a BEST Peaks 1CB 150 Series core, or the drill resistant BEST 1CDF 7-pin brass core.
8) My door is thicker than 1-3/4 inch and I need a keyed cylinder pull instead - what should I look at?
The Schlage B590-299 plug extension is built for 1-5/8 inch and 1-3/4 inch door preparations, so it is not the route for other thicknesses or for a pull-style application. The Adams Rite 4036 mortise cylinder is a five-pin Grade 1 cylinder listed for doors from 1/2 inch minimum, and for cylinder pull applications the Adams Rite 4025 is a five pin tumbler cylinder pull with through-screws for the MS1847 deadlock, while the Adams Rite 4026 is the five pin tumbler cylinder pull intended for wood door applications on the 5017 wood door deadlock.
9) Is there a Schlage-keyway cylinder from another maker I can use if I am replacing the whole cylinder rather than extending it?
Yes. The Schlage B590-299 is a plug extension for Schlage modular cylinders and does not replace a cylinder on its own. If the full cylinder is coming out, the Detex MC65 is a 6-pin mortise cylinder with a Schlage C keyway at 1-1/8 inch, and the Corbin Russwin 1080 is a 1-1/2 inch 6-pin LFIC mortise cylinder built for Schlage L9000 mortise locks with an A01 cloverleaf cam. Confirm the cam and length the lock body calls for before ordering either.
10) We key our whole facility on interchangeable cores - is the B590-299 part of that system?
No. The B590-299 is a commercial replacement part, a plug extension used inside a Schlage modular cylinder to suit the door thickness, and it carries no keying of its own. For an interchangeable core program the BEST Peaks 1CB is a 150 Series interchangeable core cylinder, and the BEST 1CDF is a drill resistant patented interchangeable core in 7-pin brass, also 150 Series. Those are the items that standardize keying across a building; the plug extension only makes the Schlage cylinder assembly the correct length.
11) What looks like a substitute for the B590-299 but is not?
Rim and knob-style retrofit cylinders are the common mix-up. The Medeco 1012040 is a 6-pin lazy motion rim cylinder for Kwikset single cylinder deadbolts, the Medeco 1065244 is a 5-pin lazy motion rim cylinder with an Emtek tailpiece, and the Kaba Ilco 1599 is a key-in-knob replacement cylinder. Those are keyed cylinders tied to a specific lock family, whereas the Schlage B590-299 is a non-keyed plug extension that fits inside a Schlage modular cylinder for 1-5/8 inch and 1-3/4 inch doors. Ordering one in place of the other leaves the job short a part.
12) Is the B590-299 plug extension meant for residential or commercial door hardware?
Commercial. It is specified for commercial applications, the kind of service work done in office buildings, schools, healthcare, retail, warehouses, multi-tenant residential and municipal facilities where Schlage cylinders are already the standard.
13) I need a cylinder for a lever lock, not a modular cylinder part - what is the equivalent?
The Schlage B590-299 plug extension serves Schlage modular cylinder assemblies and is not a key-in-lever cylinder. For lever applications, the Falcon A23161-05 G is a key-in-lever cylinder in the RU/T Series with a 6-pin G keyway, keyed different and supplied with two cut keys, and the Kaba Ilco 1539 Series is a key-in-knob and lever universal cylinder. Match the cylinder to the lever lock family you have rather than to the modular cylinder parts line.
How fast can I get the Schlage B590-299 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
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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 Schlage B590-299 come with a warranty?
Absolutely. The Schlage B590-299 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 Schlage B590-299?
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