Trusted Since 2001
Security Parts carries specialty and accessory parts that keep complete commercial door hardware systems functioning: the Falcon 030057-002 M Series lever return spring for older Falcon MA mortise lock lever trim (Avalon, Dane, Quantum, Sutro designs), the Falcon 005099-000-30 ANSI dust box (1-inch deep) for hollow metal frame strike applications, the Von Duprin 283 vertical rod top strike for wood frame installations with 33A/35A/98/9947 series exit devices, the LCN 2613-3071 and 2614-3071 standard cylinder assemblies for the 2610 pneumatic Auto Equalizer multi-door operator, and Schlage trim accessories including privacy roses (09-459 C design, 09-486 B design), trim collar 36-031, trim ring and security insert 36-071, and diameter adapter ring 38-031.
The commercial door hardware parts that generate the most confused orders are not the major assemblies. They are the specialty components and accessories that service technicians need when a single part fails on an otherwise functional system. A lever that droops on an older Falcon mortise lock needs a specific return spring. A vertical rod exit device on a wood frame needs a specific top strike that does not ship with the device for metal frame applications. A door with a bore that does not match the lock requires an adapter ring rather than a new door bore. These parts exist precisely for field service situations, and every one of them is available at SecurityParts.com.
Browse the complete Schlage, Falcon, Von Duprin, and LCN parts catalog at Security Parts. For the lock series these accessories serve, browse Falcon hardware parts, Von Duprin exit device parts, and LCN door closer and operator parts.
Falcon M Series Lever Return Spring: Part 030057-002
The Falcon 030057-002 is the lever return spring for older Falcon M Series mortise lock lever trim. Understanding what "M Series" means in this context is important: the MA Series (currently produced Falcon Grade 1 mortise lock) replaced the earlier M Series, and the 030057-002 spring serves the older pre-MA lever trim designs rather than current production MA mortise locks.
What the Return Spring Does
The return spring is the torsion spring inside the lever trim assembly that returns the lever to its neutral horizontal position after a person rotates the lever to retract the latch bolt. Without a functional return spring, the lever drops to a downward angle after operation and stays there rather than returning to horizontal. This drooping lever is visible to anyone approaching the door and indicates that the spring has failed. It can also cause incomplete latch retraction if the lever position affects the latch cam alignment.
Spring Color: Yellow Replaces Green
The 030057-002 replacement spring is yellow in color. It replaces the older green spring that was used in earlier M Series production. When a technician disassembles an older Falcon M Series lever trim and finds a green spring, the replacement is the yellow 030057-002. The color change indicates a material or specification update in the spring while maintaining fit compatibility with the original lever trim designs.
Lever Designs This Spring Serves
The 030057-002 serves the Avalon, Dane, Quantum, and Sutro lever designs in the Falcon M Series product line. These are named lever style designations from the older Falcon catalog. When confirming the spring is the correct part for a specific installation, check the lever style name stamped or labeled on the trim escutcheon or the Falcon catalog page for the original installation. If the lever design name is one of these four, the 030057-002 is the correct replacement spring.
Falcon 005099-000-30 ANSI Dust Box
The Falcon 005099-000-30 is a separate ANSI dust box with 1-inch depth for Falcon lock strike applications on hollow metal frames. The product number suffix -30 indicates aluminum finish for the box housing.
Why a Separate Dust Box Is Sometimes Needed
Most commercial door hardware ships with strike plates that include an integrated box. However, there are field situations where a separate box is required. When a strike plate is damaged and replaced with a flat no-box strike on a hollow metal frame, a separate dust box must be added to provide the bolt cavity the metal frame cannot provide on its own. When the original box is damaged or corroded but the strike plate face is still serviceable, a replacement box can restore the installation without replacing the full strike. The Falcon 005099 is the separate box component that addresses these situations in Falcon cylindrical and mortise lock applications.
ANSI Dimensions and Depth
ANSI specification dust boxes follow the ANSI/BHMA A156.31 standard for strike dimensions. The 1-inch depth of the 005099 accommodates the full throw of an ANSI-specification deadbolt (typically 1-inch throw) without the bolt hitting the back of the box before fully extending. Using a box that is too shallow prevents the bolt from fully extending, which can be mistaken for a close-out or cylinder adjustment problem when the real issue is the box depth.
Von Duprin 283 Vertical Rod Top Strike
The Von Duprin 283 is a vertical rod top strike specifically for wood frame installations with the Von Duprin 33A, 35A, 98, and 9947 series surface vertical rod exit devices. Understanding what a vertical rod top strike does and why the frame material determines which strike is required is essential for correct ordering on any SVR exit device installation.
How Vertical Rod Exit Devices Work at the Top
A surface vertical rod exit device has two latch points: the main latch bolt that engages a strike in the door frame at the standard latch height, and a top latch that travels up a vertical rod to a strike mounted in the door frame header at the top of the door. When the push bar is pressed, both latch points release simultaneously. The door cannot be fully secured unless both strikes are correctly installed and aligned with their respective latches.
On hollow metal door frames in commercial construction, the top strike is typically embedded into the hollow metal frame construction during manufacturing, or is a separate component that mounts in the hollow metal header section. The 283 is specifically the wood frame version: it is the separate top strike component that mounts into the wooden header of a wood frame application where no integrated top strike exists.
Series Compatibility
The Von Duprin 283 serves the 33A, 35A, 98, and 9947 series SVR (surface vertical rod) exit devices in wood frame applications. The WDC (wood door construction) designation on these series indicates the wood frame version of the device, and the 283 is the standard top strike for WDC installations. The 283 is not the correct top strike for hollow metal frame applications, where a different strike component is used to match the frame construction.
Installation Notes for the Von Duprin 283
The 283 is installed in the door frame header during exit device installation. The top latch rod is cut to the correct length during installation (most SVR devices require rod cutting for doors shorter than 7 feet). The 283 strike must be positioned at the correct height to align with the fully extended top latch position. Incorrect height positioning of the 283 produces either a top latch that misses the strike pocket (too high or low) or a top latch that contacts the strike face before fully extending (too far out). Template-based positioning, using the manufacturer's installation instructions, prevents all three alignment errors.
LCN 2613-3071 and 2614-3071 Cylinder Assemblies
The LCN 2613-3071 and 2614-3071 are standard cylinder assemblies for the LCN 2610 Series pneumatic Auto Equalizer operator. The 2610 Series is the only pneumatic multi-door automatic operator in the LCN catalog, designed to provide low-energy automatic door opening assistance on multiple doors connected to a single compressed air supply.
Understanding the 2610 Pneumatic Auto Equalizer
The LCN 2610 is distinct from all other LCN automatic operators in one important way: it uses compressed air rather than electromechanical or electrohydraulic power to open doors. A single air supply unit and compressor can power multiple 2610 operator cylinders throughout a corridor or building section, making the 2610 the cost-effective choice for multi-door automatic opening projects where running individual electrical connections to each door would be prohibitively expensive.
The cylinder assembly is housed in the head frame (concealed in the frame) with the arm and track concealed in the door top rail. The 2610 provides manual opening up to 90 degrees of powered opening and up to 160 degrees of manual opening. The 10,000,000 cycle heavy-duty cylinder is sized to match the 2010 Series overhead concealed closer in durability.
Cylinder Assembly Size Numbers
The 2613-3071 is the size 3 cylinder assembly for exterior doors to 30-inch width and interior doors from 30 to 38 inches. The 2614-3071 is the size 4 cylinder assembly for larger door widths. The size number in the cylinder assembly part number corresponds to the spring force needed for the specific door width, following the same sizing convention used across the LCN closer catalog.
Handing must be specified when ordering. The -3071 suffix indicates the standard aluminum finish cylinder. Left hand (LH) and right hand (RH) versions are available. Handing on the 2610 is determined by the cylinder orientation in the head frame, which is set at installation for the specific door swing direction.
When the Cylinder Assembly Requires Replacement
The 2613-3071 and 2614-3071 cylinder assemblies require replacement when the cylinder develops an internal hydraulic fluid leak (producing erratic or uncontrolled door movement despite correct air pressure), when the piston seal fails (causing loss of opening force that is not resolved by checking air supply pressure), or when the cylinder body is physically damaged from impact or severe weather exposure. The 2610 cylinder is rated for 10,000,000 cycles, which translates to a very long service life in typical commercial applications, so cylinder assembly failure is less common than air supply or control box failures.
Schlage Trim Accessories
Schlage produces a range of trim accessories that address specific field situations in cylindrical lock, tubular lock, and mortise lock installations. These are not the primary lock components but the supporting trim and interface components that make installations cleaner, more secure, or compatible with non-standard door preparations.
Schlage 09-459 and 09-486 Privacy Roses
The Schlage 09-459 is the C design privacy rose and the 09-486 is the B design privacy rose, both for Schlage LT Series and related tubular lock families. The rose is the decorative plate that covers the bore preparation area and the lock chassis mounting points on both sides of the door, providing a finished appearance and preventing debris accumulation around the bore edge.
Privacy roses are specifically designed for the privacy function (the push-button or thumbturn lock function used on bathroom and bedroom doors) where the rose design incorporates the visual language of privacy hardware in the building's overall hardware aesthetic. The C and B designations refer to the design family of the rose profile, which must match the lever style being used for visual consistency. Using the wrong rose design in a building with a consistent lever specification produces a mismatched appearance that is aesthetically unacceptable on completed projects.
Schlage 09-459 Privacy Rose, C Design
Privacy rose in C design profile for Schlage LT Series and related tubular lock families. Replaces damaged or finish-mismatched roses on existing installations. Confirm C design matches the lever style installed on the same door before ordering. Match finish to existing hardware.
Schlage 09-486 Privacy Rose, B Design
Privacy rose in B design profile for Schlage LT Series and related tubular lock families. The B design has a different edge and surface profile from the C design and is paired with specific lever styles. Always verify the design letter matches the lever design before ordering a replacement rose.
Schlage 36-031 Trim Collar
The Schlage 36-031 trim collar is used to cover oversized bore preparations or cosmetic damage around a bore hole that is larger than the standard rose footprint. In renovation projects or repair situations where the existing bore has been enlarged by previous hardware installation (particularly when a door has had multiple different lock installations over its lifetime), the bore edge may be chipped, worn, or oversized. The trim collar mounts over the bore and provides a clean finished edge that the rose can sit against, concealing the irregular bore condition.
The 36-031 is also used in CL Series cabinet lock and related applications where a trim collar provides the interface between the lock body and the door or cabinet face panel. For commercial cabinet and locker installations, the 36-031 provides a finished edge presentation that matches the hardware finish rather than exposing the raw bore edge.
Schlage 36-071 Trim Ring and Security Insert Pack
The Schlage 36-071 trim ring and security insert pack provides two components in one package. The trim ring is the decorative ring that mounts on the door face around the bore, providing a finished appearance. The security insert is a reinforcing component that fits inside the trim ring and prevents the lock chassis from being pulled through the door in a forcible entry attempt.
The security insert addresses a specific vulnerability in cylindrical lock installations: without a security insert, a determined forced entry attempt can apply sufficient force to pull the entire lock chassis body through the door bore from the outside, exposing the interior latch mechanism. The security insert creates a mechanical stop that prevents this pullthrough even when significant force is applied. On exterior doors in high-risk applications, specifying the 36-071 with security insert as part of every cylindrical lock installation adds meaningful resistance to this attack vector at minimal cost.
Schlage 38-031 Diameter Adapter Ring for 2-1/8-Inch Door Prep
The Schlage 38-031 is a diameter adapter ring for 2-1/8-inch door bore preparations. The standard commercial cylindrical lock bore is 2-1/8 inches in diameter. Some door configurations, particularly in certain residential-to-commercial conversions and renovation work, may have bore preparations that are slightly different from this standard. The adapter ring corrects the bore interface without requiring re-boring the door, which would require special tools and extend the service time significantly.
The 38-031 is also used in specific Schlage S Series and CS210 mounting configurations where the mounting geometry requires the adapter ring to correctly space the trim from the door face. When an installation produces visible gaps around the rose or trim plate that suggest a bore diameter mismatch, checking for the 38-031 as the correct correction component resolves the issue without door work.
Complete Parts Reference
| Part Number | Description | Series | Key Ordering Note |
|---|---|---|---|
| Falcon 030057-002 | M Series lever return spring (yellow replaces green) | Falcon MA/M Series mortise (older) | Limited availability. Fits Avalon, Dane, Quantum, Sutro levers only. |
| Falcon 005099-000-30 | ANSI dust box, 1-inch deep | Falcon cylindrical and mortise lock strikes | For hollow metal frames. 1-inch depth required for full ANSI bolt throw. |
| Von Duprin 283 | Vertical rod top strike for wood frames | Von Duprin 33A, 35A, 98, 9947 SVR | Wood frame only (WDC designation). Not for hollow metal frames. |
| LCN 2613-3071 | Standard cylinder assembly, size 3 | LCN 2610 pneumatic Auto Equalizer | Specify LH or RH handing. Exterior doors to 30 inch, interior 30 to 38 inch. |
| LCN 2614-3071 | Standard cylinder assembly, size 4 | LCN 2610 pneumatic Auto Equalizer | Specify LH or RH handing. Larger door widths than size 3. |
| Schlage 09-459 | Privacy rose, C design | Schlage LT Series and related tubular | Must match lever design letter (C) for correct aesthetic pairing. |
| Schlage 09-486 | Privacy rose, B design | Schlage LT Series and related tubular | Must match lever design letter (B). Not interchangeable with C design. |
| Schlage 36-031 | Trim collar | Cylindrical locks, CL Series cabinet | Used for oversized or damaged bore edges; CL cabinet lock interface. |
| Schlage 36-071 | Trim ring and security insert pack | Schlage cylindrical locks | Security insert prevents chassis pullthrough on exterior doors. |
| Schlage 38-031 | Diameter adapter ring for 2-1/8-inch door prep | Cylindrical locks, CS210, S Series | Corrects bore size mismatch without re-boring door. |
Why These Parts Matter More Than They Appear To
The parts in this guide are not the primary lock bodies or major assemblies. They are the components that determine whether a major assembly installation is complete, secure, and professional. A Von Duprin SVR device installed without the 283 top strike on a wood frame provides single-point latching that fails to secure the door at the top. A cylindrical lock installed without the 36-071 security insert on an exterior door has a vulnerability that the lock body's ANSI Grade 1 rating does not address. A Falcon M Series mortise lock with a failed return spring presents a lever that hangs at an angle and may not fully function, making the lock appear broken when only a small spring has failed.
Every one of these parts represents a service opportunity: diagnosing the correct accessory part rather than replacing a complete assembly saves significant cost for the facility while restoring full function. SecurityParts.com stocks all of these components for same-day shipping.
Browse the complete Falcon, Von Duprin, LCN, and Schlage parts catalog at SecurityParts.com. For the lock series these accessories serve, browse Schlage L Series and Falcon MA mortise lock parts, Von Duprin and Falcon exit device parts, LCN door closer and operator parts, and Schlage ND Series cylindrical lock parts. Pre-order support at 845-935-0301 or the contact page.
Why Choose Security Parts for These Specialty Parts
Spring color change documentation, 283 wood vs metal frame distinction, pneumatic air supply diagnosis first, security insert pullthrough prevention, and same-day shipping.
M Series Spring Detail
We document that the 030057-002 yellow spring replaces the older green spring, and specify the four lever designs it fits. Without this detail, technicians cannot confirm the part without disassembling the trim to check the spring color.
283 Frame Distinction
We document that the Von Duprin 283 is specifically for wood frame installations. Installing a hollow metal frame top strike on a wood application or omitting the 283 on wood frames produces single-point top latching that fails to secure the door header.
Security Insert Value
We document the pullthrough attack vulnerability that the Schlage 36-071 security insert prevents. This is a genuine forced entry technique on cylindrical locks without inserts, and it is never documented in standard hardware specification content.
Same-Day Shipping
Most specialty and accessory parts ship same day from US warehouses. Call 845-935-0301 or use the contact page for compatibility and identification support.
What Makes Security Parts Different for These Specialty Parts
- We document the Falcon M Series spring color change (yellow replaces green) and the four specific lever designs the 030057-002 fits. Without this, a technician cannot confirm the correct part without full disassembly. No other supplier documents this at the product ordering stage.
- We document the Von Duprin 283 as wood frame specific and explain the top latch single-point latching failure that occurs when this strike is missing on wood frame SVR installations. Fire-rated SVR assemblies on wood frames require both strikes for code compliance.
- We document the pneumatic air supply diagnosis as the first check on 2610 operator failures before ordering a cylinder assembly. A clogged supply line or failing control box valve produces the same symptom as cylinder failure but does not require cylinder replacement.
- We document the 36-071 security insert as a pullthrough attack prevention component. The insert is inexpensive but provides genuine forced entry resistance that the ANSI Grade rating of the lock body itself does not address. This fact is absent from all competitor parts content.
- We carry all these specialty parts alongside mortise lock parts, exit device parts, door closer parts, and complete Schlage hardware for full building hardware service in one order.
- Free shipping on orders over $450. Same-day shipping from US warehouses on stocked parts. 30-plus years of commercial door hardware experience.
Related Parts and Products at Security Parts
The specialty parts in this guide support every major hardware product line available at SecurityParts.com. They are the completing components that appear alongside locks, closers, and exit devices on every commercial service call.
For Falcon MA Series mortise lock parts including the complete chassis and lever assemblies that the 030057-002 spring serves, browse the Falcon hardware catalog. For Von Duprin complete exit device parts including the 33A/35A/98 series that the 283 top strike serves, browse the Von Duprin catalog. For commercial exit device parts from both Von Duprin and Falcon, browse the exit devices catalog. For LCN complete closer and operator parts including the 2610 Series pneumatic operator that the 2613/2614 cylinders serve, browse the LCN catalog. For commercial door closer parts across all LCN series, browse the door closers catalog.
Browse the complete all products and parts catalog to source Schlage, Falcon, Von Duprin, LCN, and Detex hardware across the complete facility in a single session.
Frequently Asked Questions About Falcon M Series, Von Duprin 283, LCN Cylinders and Schlage Trim Accessories
What is the Falcon 030057-002 M Series lever return spring and which locks does it fit?
The 030057-002 is a lever return spring (yellow color, replacing older green springs) for older Falcon M Series mortise lock lever trim. It fits the Avalon, Dane, Quantum, and Sutro lever designs. When this spring fails, the lever droops after operation rather than returning to horizontal, and may not fully retract the latch bolt. It is a limited availability part due to the age of the M Series product line. Contact SecurityParts.com at 845-935-0301 for current availability.
What is the Falcon 005099-000-30 ANSI dust box and when is it required?
The 005099 is a separate ANSI dust box with 1-inch depth for Falcon lock strike applications on hollow metal frames. It is required when a no-box strike plate is installed on a hollow metal frame that has no natural bolt pocket, or when an existing box is damaged and needs replacement separately from the strike plate face. The 1-inch depth accommodates the full ANSI deadbolt throw without the bolt hitting the back of the box before fully extending.
What is the Von Duprin 283 vertical rod top strike and which exit device series does it serve?
The 283 is the vertical rod top strike for wood frame installations with the Von Duprin 33A, 35A, 98, and 9947 SVR exit devices. It mounts in the wood frame header to receive the top latch bolt. Without the 283 on a wood frame installation, the exit device has only single-point latching at the bottom latch. On fire-rated assemblies, this produces a non-compliant installation. The 283 is not for hollow metal frame applications.
What are the LCN 2613-3071 and 2614-3071 cylinder assemblies used for?
These are the size 3 and size 4 standard cylinder assemblies for the LCN 2610 Series pneumatic Auto Equalizer multi-door operator. The 2610 uses compressed air from a single supply to power multiple door operators. Cylinder assemblies require handing specification (LH or RH). Before ordering, confirm air supply pressure at the cylinder supply port, as supply line restrictions and control box valve failures produce the same symptom as cylinder failure but do not require cylinder replacement.
What are Schlage privacy roses 09-459 and 09-486 and when are they replaced?
The 09-459 is the C design privacy rose and 09-486 is the B design privacy rose for Schlage LT Series and related tubular locks. The rose covers the bore preparation area. They are replaced when damaged, scratched, or when finish no longer matches the lever. The design letter (C or B) must match the installed lever design for correct aesthetic pairing. The two designs are not interchangeable.
What are the Schlage 36-031 trim collar, 36-071 trim ring, and 38-031 adapter ring used for?
The 36-031 trim collar covers oversized or damaged bore edges on renovations. The 36-071 trim ring and security insert pack includes a reinforcing insert that prevents the cylindrical lock chassis from being pulled through the door bore in a forced entry attempt. The 38-031 diameter adapter ring corrects bore size mismatches in 2-1/8-inch door prep applications without re-boring. The security insert in the 36-071 addresses a genuine forced entry vulnerability not covered by the lock's ANSI grade rating.