Folger Adam 003-0210-001 Locking Cam Spring – 300 Series Fail-Safe Electric Strike Replacement Part
The Folger Adam 003-0210-001 is a genuine OEM locking cam spring designed as a direct replacement component for Folger Adam 300 Series fail-safe electric strikes. Referenced as Part #12 in the 300 Series parts diagram, this spring is a critical internal mechanism that maintains the locking cam in proper position during normal strike operation. Sourcing the correct manufacturer part number ensures proper fit, function, and reliable performance when servicing or rebuilding a 300 Series electric strike assembly.
Product Overview
Electric strike internal components — springs, cams, and keepers — are subject to wear over years of high-cycle use in commercial access control applications. Replacing worn or broken components at the part level extends the service life of the electric strike assembly without requiring a full strike replacement. The 003-0210-001 locking cam spring restores proper cam tension and engagement in Folger Adam 300 Series fail-safe electric strikes commonly found in commercial and institutional door openings.
Fail-Safe Electric Strike — Function Reference
The 300 Series electric strike operates in a fail-safe configuration: the keeper is released (door can be pushed open) when power is removed, and the keeper is held (door is secured) when power is applied. This configuration is commonly specified for applications such as behavioral health, asylum function, or access-controlled openings where a power-loss condition must allow free egress. Note: Fail-safe electric strikes are not suitable for fire-labeled openings, as positive latching is not maintained on power loss.
Key Benefits
- Genuine OEM replacement component — exact fit for 300 Series electric strikes
- Part-level repair option — avoids unnecessary full strike replacement
- Maintains proper locking cam engagement and spring tension
- Supports high-cycle commercial door applications
- Identified as Part #12 in the Folger Adam 300 Series parts diagram for precise ordering
Typical Applications
- Servicing and rebuilding Folger Adam 300 Series fail-safe electric strikes
- Commercial access control door openings
- Institutional, healthcare, and behavioral health facilities
- Facility maintenance and preventive repair programs
Technical Details
| Feature | Details |
|---|---|
| Manufacturer Part Number | 003-0210-001 |
| Brand | Folger Adam |
| Component Description | Locking Cam Spring |
| Parts Diagram Reference | Part #12 |
| Compatible Series | Folger Adam 300 Series Electric Strike |
| Strike Configuration | Fail-Safe |
| Product Category | Electric Strike Replacement Parts |
Need an alternative? DoorwaysPlus can quote comparable electric strike assemblies and replacement parts from preferred commercial lines including HES, Sargent, and other service-friendly manufacturers. Contact us for options.

| Brand | Folger Adam |
| Series | Folger Adam - 300 Series |
| Part Type | Spring |
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