Description
4900 Heavy Duty Deadlatch provides flexible traffic control and easy installation.
Features:
- Allows the latchbolt to remain retracted for two-way or exit-only traffic control.
- 5/8″ throw with deadlocking stainless steel auxiliary pin to prevent “loiding.”
- Can be flipped in the field without disassembling or using special tools.
- Designed for easy retrofit into MS1850S or Adams Rite 4510/4700 prep doors
- Accepts standard mortise cylinders or thumbturns with MS® cam
- Includes flat and radius faceplates, standard strike for flat jambs, with optional variants.
Technical Specifications
Product Model
4900‑35‑101‑313
Product Type
Heavy Duty Deadlatch
Function
Narrow stile latch lock with bolt hold-back for traffic control
Cylinder Compatibility
1‑5/32″ (29.4mm) mortise cylinder with MS cam (4036/4066)
Cylinder Backset Options
- 31/32″
- 1‑1/8″
- or 1‑1/2″
Cam Operation
Key turn holds bolt retracted to allow free swing
Case Material & Finish
Steel case with corrosion-resistant plating
Case Dimensions
7/8″ × 5‑13/16″ × depth (varies by backset)
Latchbolt Material & Throw
- Solid brass
- 5/8″ × 1″ × 5/8″
Auxiliary Latch Pin
Stainless steel
Faceplate Size
- 1″ × 6‑7/8″
- includes flat and radius options
Strike Options
- 4902 flat standard
- 4901 retrofit
- radius/long lip options
Door Thickness Minimum
1‑3/4″ (44.5mm)
Handing
Field reversible (LH/RHR)
Finish Code
313 Dark bronze anodized
Finish Description
Dark bronze anodized aluminum
Material (Main Body)
Aluminum body with steel internal case
Grade / Certification
ANSI/BHMA Grade1
Corrosion Resistance
Corrosion‑resistant plating
Interchangeability
- Retrofits 4500/4700
- interchangeable with MS1850A/S
Package Contents
- Deadlatch
- flat & radius faceplates
- strike(s)
- screws
Standards Compliance
- ANSI/BHMA Grade1
- BAA qualified
Compliance (Certifications)
Meets ANSI/BHMA Grade1 and BAA
Material Summary
- Aluminum body
- steel case
- brass latch
- stainless Latch Pin
Warranty
5‑Year Limited
Warranty
5‑Year Limited Warranty