Adams Rite 4920AN-55-602-628 Heavy Duty Deadlatch (ANSI Size) with Flat Faceplate in Clear Anodized
- Clear Anodized Finish
- LH or RHR - handed operation is easily reversible using only a screwdriver
- Cylinder Backset: 2-3/4"
- Case is made of steel with corrosion-resistant plating that measures 7/8" x 5-13/16" x depth (depth varies by bracket)
- 1-3/4" minimum door thickness required

The 4920AN-55-602-628 from Adams Rite is a Heavy Duty Deadlatch (ANSI Size) with Flat Faceplate in Clear Anodized. The 4920AN-55-602-628 series Deadlatch offers precise traffic control and easy installation for wood or hollow metal doors prepared for hardware according to the specifications of the American National Standards Institute (ANSI). A key-controlled bolt hold-back feature allows a door to free-swing part of the day and exit-only when the bolt is free to latch. This allows a "locked" entrance to be used as an exit by customers or visitors already in the building. For its operation turn key or operate handle to retract spring-loaded latchbolt. To hold bolt retracted, push it in and secure by reverse turn of key. It is easily interchangeable, without stile modification with any MS1850A or MS1850S Deadlock of same backset and faceplate shape. It also replaces 4520 and 4720 ANSI Deadlatches.
Adams Rite 4920AN-55-602-628 Deadlatch Features
- Clear Anodized Finish: Provides enhanced corrosion resistance while maintaining a sleek appearance.
- Handed Operation: LH or RHR operation is easily reversible with just a screwdriver, ensuring flexibility in installation.
- Cylinder Backset: 2-3/4" backset accommodates standard door preparations for easy installation.
- Durable Steel Case: Made of steel with corrosion-resistant plating, ensuring longevity and durability under heavy use.
- Minimum Door Thickness: Requires 1-3/4" door thickness, suitable for commercial-grade applications.
- Grade 1 Standard: Meets high standards for commercial security and durability.
- Compatibility: Works with any standard 1-5/32" mortise cylinder with MS dimensioned cam for wide usability.
- Armored Flat Faceplate: Measuring 1-1/4" x 8", can be adjusted in the field for beveled edge doors, enhancing its versatility.
- Solid Brass Latchbolt: Features a robust 5/8" x 1" x 5/8" throw for added security and reliability.
- All Stainless Steel Auxiliary Latchpin: Prevents unauthorized access through methods like "the old credit card trick," enhancing security.
- Strike Included: 4506 Strike included for complete installation.
- ANSI Compliant Strike: 4506-02 Strike furnished to ANSI specifications for flat jamb for compatibility and ease of installation.
Adams Rite 4920AN-55-602-628 Detailed Specifications
| Feature | Details |
| Finish | Clear Anodized |
| Handing | Reversible LH or RHR |
| Cylinder Backset | 2-3/4" |
| Case Material | Steel with corrosion-resistant plating |
| Dimensions | 7/8" x 5-13/16" (depth varies by bracket) |
| Door Thickness | 1-3/4" minimum |
| Security Grade | Grade 1 Standard |
| Cylinder Compatibility | Standard 1-5/32" mortise cylinder with MS cam |
| Faceplate Dimensions | 1-1/4" x 8" |
| Latchbolt Material | Solid Brass |
| Latchbolt Throw | 5/8" x 1" x 5/8" |
| AUX Latchpin Material | All Stainless Steel |
| Strike Type | 4506 Strike included |
| ANSI Preparation | 4506-02 Strike for flat jamb |
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