HES AM3301 1/2 x 1 x 8.25 Spacer for 600WP Magnetic Lock
The HES AM3301 is a precision-engineered spacer designed for the HES 600WP magnetic lock series. This OEM component delivers critical dimensional control between the electromagnetic lock body and door frame, ensuring proper strike alignment and consistent locking force application. In commercial access control installations, frame spacing tolerance directly impacts both security performance and equipment longevity — undersized or oversized gaps introduce binding, electromagnetic field loss, and premature wear on solenoid contacts.
Key Features
- Dimensions: 1/2" × 1" × 8.25". Engineered to fit standard commercial door frame configurations; validates proper lock-to-striker clearance on 600WP installations.
- OEM Precision Manufacturing: Manufactured to HES specification tolerances. Ensures repeatable dimensional accuracy across multiple installations on the same job site.
- 600WP Compatibility: Direct fit for HES 600WP electromagnetic locking systems. Integrates with the lock body mounting plate without modification.
- Strike Alignment: Maintains consistent lock-to-strike gap, preventing misalignment-induced binding and reducing electromagnetic field inefficiency.
- US-Manufactured: Domestic production supports rapid lead-time and supply chain continuity for integrators stocking 600WP systems.
- Durable Material: Precision-engineered component rated for commercial-grade temperature range (–65 °F to +150 °F) and institutional facility environments.
Proper frame spacing is a frequently overlooked installation variable. When magnetic lock strike alignment is off by even 1/8", electromagnetic engagement weakens, solenoid draw current increases, and operational life shortens. The AM3301 eliminates guesswork by providing a fixed spacer that locks in the correct gap geometry. On a 50-door access control retrofit, using OEM spacers across the board reduces field callback rates by eliminating alignment-related nuisance lockouts and failed buzzer cycles.
The spacer is compatible with standard commercial door frame construction — wood, metal stud, and hollow-metal frames all accept the AM3301 without special routing or modification. Installation is straightforward: position the spacer against the frame, mount the 600WP lock body to the spacer, and verify the strike clearance. This single-component approach accelerates field installation and simplifies inventory management for integrators running multiple 600WP jobs per month.
HES manufactures the AM3301 as a genuine OEM part, maintaining full dimensional consistency with the 600WP locking system. Unlike generic spacer stock or field-fabricated shims, the AM3301 carries the same manufacturing pedigree as the lock itself, ensuring long-term reliability and warranty alignment with the broader 600WP ecosystem. For integrators maintaining service relationships with end users, stocking AM3301 spacers reduces future retrofit labor and eliminates the risk of field substitution with incompatible hardware.
Marty AllisonPerspective based on aggregated IP Security Depot and affiliated engineering team experience.
We've installed hundreds of HES 600WP magnetic locks across retail, hospitality, and institutional sites, and frame spacing is consistently the most under-engineered aspect of magnetic lock deployments. Installers frequently improvise with scrap wood, rubber shims, or generic metal spacers to bridge the gap between lock body and frame. The result is inconsistent strike alignment, solenoid chatter, and intermittent lock failures 6–18 months post-commissioning. The AM3301 eliminates that risk entirely. It's a single-line-item BOM addition that costs pennies per door and saves hundreds in callbacks. On a 40-door office building retrofit, proper spacer specification across the board is the difference between a stable, quiet system and one generating daily nuisance alerts.
Technical Highlights:
- OEM Dimensional Tolerance: Manufactured to HES spec with consistent thickness and parallel surfaces. Eliminates the guesswork of field shimming — lock-to-strike gap is locked in at installation, preventing binding and electromagnetic drift over the product lifetime.
- Temperature Range (–65 °F to +150 °F): Material stability across seasonal and climate-controlled environments. Expansion/contraction is negligible; frame-mounted spacers don't shift or loosen due to thermal cycling in heated/cooled buildings.
- Compatibility with Standard Frame Materials: Works equally well with wood door frames, metal studs, and hollow-metal frames common in commercial construction. No rework or special fastening required.
- Weight (2 lb): Lightweight yet rigid — no flexing under the electromagnetic pull force of the 600WP lock body. Prevents frame deflection that could introduce play in strike alignment.
- US Manufacturing: Sourced and built domestically, ensuring supply continuity and rapid replacement availability if a spacer is damaged in the field.
Deployment Considerations:
- Verify frame material before installation — wood frames may require pilot holes for fastening, while metal frames accept self-tapping screws directly. This is not a drill-free spacer; frame prep is a minor task but avoids on-site surprises.
- Stack or shim only if the AM3301 alone does not achieve the correct strike gap; stacking multiple spacers can introduce uneven load distribution on the lock mounting plate. Consult the 600WP installation guide if additional spacing is needed.
- On retrofit jobs, verify the existing door frame is square and plumb before installing the spacer. Out-of-square frames will transmit misalignment to the lock, negating the spacer's precision benefit. Use a 4-foot level and frame square as part of your pre-installation survey.
- Stock AM3301 spacers on every 600WP job site. Field substitution with improvised hardware is the leading cause of post-commissioning lock callbacks. Discipline on spacer inventory = zero margin for interpretation by field technicians.
The HES AM3301 is the right choice for integrators and building managers who demand reliable, low-maintenance magnetic lock installations. Proper frame spacing is the foundation of a quiet, stable access control system. For projects using the HES 600WP magnetic lock series, the AM3301 is a non-negotiable BOM item. Explore more HES access control components in the HES catalog.
