About this item
The Adams Rite MS4002 is the armored strike for the MS Series deadlock an aluminum trim plate backed by a concealed massive steel doubler specifically designed to defeat jamb peeling forced entry attacks. If you searched "ms4002", "armored strike", "deadlock strike", "deadlock item reinforced plating", "adams rite strike plate", or "armor strike" this is the product.
Why Most MS Deadlock Installs Have No Strike and Why the MS4002 Changes That
This is the context that zero competitor pages provide, and it's the first thing a buyer needs to understand.
The Adams Rite MS deadlock installs in narrow stile aluminum doors. The strike is simply a slot cut into the aluminum jamb the bolt projects from the door and enters the jamb slot directly. No separate strike plate is required. The jamb slot is the strike. For most commercial aluminum glass storefront installations, this is acceptable and standard practice.
The MS4002 is added when the standard slot-in-jamb is not enough. There are two reasons to specify it: aesthetics (covering the slot with a finished trim plate that matches the door hardware) and security specifically, defense against jamb peeling.
Jamb Peeling: What It Is and Why the MS4002 Stops It
Every competitor page mentions "jamb peeling" but none explain it. Here is what it is.
A hollow aluminum door jamb is a relatively thin extrusion. On a standard slot-in-jamb MS deadlock installation, the bolt enters the slot and engages the back of the jamb slot. Under a sustained pry attack a crowbar or similar tool inserted between the door and jamb at the bolt location sufficient force can deform and peel back the thin aluminum jamb wall around the slot. The jamb deforms outward as the aluminum bends, the slot opening widens, and the bolt pulls free without the lock itself being defeated. The lock is never picked, never broken the jamb around it simply bends away.
The MS4002 defeats this by inserting a massive steel doubler plate directly behind the aluminum trim plate, inside the hollow jamb section. The steel is completely hidden the visible face of the MS4002 looks identical to the standard 4000 trim strike or 4001 box strike. But behind the aluminum trim, the steel doubler fills the jamb void and provides rigid reinforcement that aluminum alone cannot provide. A pry attack against the jamb hits steel instead of hollow aluminum. The jamb cannot peel because the steel doubler transmits and distributes the load throughout the jamb rather than concentrating it at the slot edge.
MS4002 Model Suffix Decoded: How to Order the Right Variant
The MS4002 ships in multiple configurations. The suffix encodes everything needed:
First digit Trim plate shape: 0 = Flat, for single swinging doors where the door closes flush or nearly flush with the jamb edge. 1 = Radius, for pairs of doors where the strike mounts against the curved nose of the opposite stile rather than a flat jamb.
Second digit Trim plate corners: 1 = Square corners. 2 = Round corners.
Third field Compatible deadlock type: 1 = All standard MS locks with 1-3/8-inch bolt throw (MS1850S, MS1950, and most standard MS deadlocks). 2 = MS1850A-020 with 3/4-inch bolt throw only (the short-bolt variant). 3 = All MS hookbolt locks (the -X5X and -050 series hookbolt for sliding doors).
Finish code: 313 = dark bronze anodized, 335 = black anodized, 628 = clear anodized, US3/605 = bright brass, US26D/626 = satin chrome.
Example: MS4002-011-628 = flat trim, square corners, standard MS bolt throw, clear anodized. MS4002-121-628 = radius trim, round corners, standard MS bolt throw, clear anodized (for paired doors).
Flat vs Radius: Swinging Doors vs Paired Door Applications
Flat (first digit 0): Installs in the jamb of a single swinging door where the door edge closes against a flat jamb surface. The trim plate face is flat.
Radius (first digit 1): Installs in the inactive leaf stile or the curved nose area of a paired door application. The trim plate has a curved profile to match the radius of the opposite door stile's nose. If the MS deadlock bolt extends from the active door into the inactive stile rather than into a flat jamb, specify radius.
Hookbolt Compatibility and the 1/8-Inch Gap Requirement
The MS4002 is compatible with hookbolt MS deadlock models (MS1850S-X5X, MS1850S-050, MS1950-X5X) the sliding door variants with a hook-shaped bolt rather than a straight bolt. However, hookbolt applications have a specific door/jamb gap requirement: hookbolt use requires a door-to-jamb gap of 1/8 inch or less. The hook-shaped bolt must have a tight gap to engage correctly against the strike. If the gap is larger than 1/8 inch, the hookbolt does not engage the MS4002 reliably. Confirm the door/jamb gap before specifying the hookbolt variant.
Two-Point and Three-Point Compatibility
The MS4002 is compatible with two-point and three-point MS deadlock systems. When the MS deadlock is upgraded with the 4016 Header Bolt and 4015 Threshold Bolt for full three-point locking, the center bolt still requires the MS strike the header and threshold bolts have their own separate strikes (1/2-inch hole in metal frame for the header, 4005 non-metal strike for the threshold). The MS4002 serves as the center-point strike in the three-point system, providing the armored engagement point for the main MS bolt while the top and bottom hexagonal bolts engage their respective head and threshold strikes.
The 4000 Series Strike Family: Where the MS4002 Fits
For reference, the full 4000 Series context:
4000 Trim Strike: Aluminum trim plate only, surface mount or flush mortised, aluminum jamb slot cover, aesthetics only no reinforcement.
4001 Box Strike: Same aluminum trim plate as the 4000 but with a dust box behind it. Used in wood construction to prevent debris entering the bolt cavity.
MS4002 Armored Strike: Same aluminum trim face as the 4000 and 4001 but backed by a massive concealed steel doubler for jamb peeling defense. The security upgrade in the 4000 series.
4003 ANSI Strike: For ANSI size MS1850SN deadlocks on hollow metal and wood doors different geometry, different application.
Specifications
Model: Adams Rite MS4002
Series: 4000 Series MS Deadlock Strikes
Type: Armored strike aluminum trim plate with concealed steel doubler reinforcement
Purpose: Prevents jamb peeling forced entry against hollow aluminum jamb sections
Compatible Locks: All standard MS deadlocks with 1-3/8" bolt throw (suffix -X1X); 1850A-020 short bolt (suffix -X2X); all MS hookbolt locks (suffix -X3X)
Hookbolt Gap Requirement: Door/jamb gap 1/8" or less required for hookbolt variants
Trim Plate Shape: Flat (prefix 0) for single doors; radius (prefix 1) for paired doors
Corners: Square (second digit 1) or round (second digit 2)
Handing: Unhanded installs on RH or LH swinging or sliding doors
Multi-Point Compatibility: Two-point and three-point MS deadlock systems
Trim Plate Material: Aluminum
Doubler Material: Steel, corrosion-resistant plating, completely concealed
Finishes: 313 (dark bronze), 335 (black), 628 (clear anodized), US3/605 (bright brass), US26D/626 (satin chrome)
American Locksets has stocked Adams Rite MS deadlock hardware since 2001.
Trusted Since 2001
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