Adams Rite 28-0151 Blocking Arm Return Spring for 7100 Series Electric Strikes — Pack of 5

Keep your Adams Rite 7100 Series electric strike operating reliably with the Adams Rite 28-0151 Blocking Arm Return Spring. This OEM replacement spring restores the blocking arm's reset action, ensuring the strike keeper returns to its latched position correctly after each access cycle. Sold in a convenient pack of 5, this part is an essential stocking item for facilities managers, locksmiths, and service technicians maintaining narrow-stile aluminum door hardware systems.

Product Overview

The blocking arm return spring is a critical internal component of the Adams Rite 7100 Series electric strike. In a frame-mounted electric strike, the blocking arm physically controls keeper engagement — when the strike is energized, the blocking arm retracts to release the latch; the return spring drives the arm back to its secured position when power is removed (fail-secure operation). A worn or broken return spring results in unreliable latching, failed keeper reset, or a strike that does not return to locked status after access — a significant security and code-compliance concern on controlled-access openings.

Compatible Application

• Adams Rite 7100 Series Electric Strikes — fixed voltage, fail-secure frame-mounted strikes for narrow-stile aluminum and glass storefront doors
• Applicable to 7100, 7130, and 7140 model variants (12VDC, 24VDC, and 24VAC configurations)
• Designed for narrow-stile aluminum storefront door frames — the most common aluminum and glass door system in commercial, retail, and institutional applications

Key Benefits

• OEM replacement part — engineered to Adams Rite specifications for correct spring rate and dimensional fit
• Pack of 5 — economical multi-pack for service stock, preventive maintenance kits, or multi-door service calls
• Restores fail-secure blocking arm function — critical for maintaining proper locked status between access events
• Fast field repair — spring replacement is a component-level repair that avoids costly full electric strike replacement
• Low cost, high impact — a small part that has an outsized effect on electric strike reliability and security performance

Typical Use Scenarios

• Preventive maintenance on 7100 Series electric strikes showing intermittent keeper reset failures
• Service calls where the electric strike fails to return to the locked position after actuation
• Scheduled parts replenishment for facilities with multiple narrow-stile aluminum door systems
• Field repair kits for locksmiths and door hardware technicians servicing commercial storefront access control systems

Technical Details

Need a complete electric strike or comparable alternatives? DoorwaysPlus can quote comparable electric strike solutions from preferred lines suited to your application — contact our team for a recommendation.