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Stainless steel double-cylinder commercial deadbolt with square bolt and keyway on both sides

Ultra Hardware

Ultra Hardware 43755 Stainless Steel Grade 2 Heavy Duty Double Cylinder Commercial Deadbolt SC4 Keyway

SKU CH-8QG1-VQWTE

Stainless-steel Grade 2 commercial deadbolt with double cylinders keyed on both sides, 6-pin SC4 keyway, 2-3/4" backset and 1" throw for wood or metal doors

  • FinishStainless Steel
  • Selling UnitEach
  • TypeDeadbolts
  • Security LevelHeavy Duty
  • Location TypeCommerical
  • MaterialMetal
  • Stainless steel finish resists corrosion in commercial settings
  • Grade 2 certification confirms heavy-duty security performance
  • Double cylinder requires a key on both sides for controlled access
  • Removable six-pin brass cylinder allows on-site rekeying
  • Fits standard wood or metal doors 1-3/8 to 1-3/4 inch thick

Commercial-Grade Deadbolt

The Ultra Hardware 43755 is a Grade 2 heavy-duty double cylinder deadbolt built for commercial doors. Its stainless steel finish resists corrosion while the solid brass tubular construction and hardened steel core bar withstand forced entry attempts. The lock fits wood or metal doors between 1-3/8" and 1-3/4" thick with a 2-3/4" backset latch.

Double Cylinder Security Upgrade

This double keyed design replaces single-cylinder deadbolts where keyed access is required on both sides of the door. The jump is worth it for locations with adjacent glass panels or sidelights where an interior thumbturn could be reached by an intruder. The removable 6-pin solid brass cylinder allows rekeying without replacing the entire lock body.

Series 9800 Integration

The SC4 keyway integrates with existing Schlage-compatible key systems for simplified key management. Hardened strike plates and a tapered collar reinforce the door frame against kick-in attacks. The full 1-inch throw bolt engages deeply into the jamb. UL certification confirms compliance with safety standards for commercial applications.

Highlights

  • Stainless steel finish resists corrosion in commercial settings
  • Grade 2 certification confirms heavy-duty security performance
  • Double cylinder requires a key on both sides for controlled access
  • Removable six-pin brass cylinder allows on-site rekeying
  • Fits standard wood or metal doors 1-3/8 to 1-3/4 inch thick

Specifications

BrandUltra Hardware
FinishStainless Steel
Selling UnitEach
TypeDeadbolts
Security LevelHeavy Duty
Location TypeCommerical
MaterialMetal
Backset2-3/4"
Grade2
KeyingKeyed Different
Number of Pins6 Pins
StyleDouble Keyed on both Sides

Questions about this item

What door thickness range does the 43755 deadbolt fit?

The lock fits wood or metal doors from 1-3/8" to 1-3/4" thick.

How is the cylinder installed and what step is often missed?

The removable 6-pin solid brass cylinder inserts into the housing; the step often missed is aligning the tailpiece with the bolt mechanism before securing the mounting screws.

What maintenance will the SC4 keyway cylinder need over time?

Lubricate the 6-pin cylinder periodically with graphite powder; the solid brass cylinder is removable and rekeyable if keys are lost or wear becomes excessive.

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