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Sargent 489 Series Grade 1 Exit Function Deadbolt – Heavy Duty Non-Keyed Commercial Lock
Product Description
The Sargent 489 Series Grade 1 Deadbolt is designed for exit-only doors where keyed entry is not required. Featuring a non-keyed exit function, this deadbolt is operated solely by a thumbturn on the inside and has no cylinder on the outside, providing secure egress without exterior access.
Tested and certified to ANSI/BHMA Grade 1 standards, the 489 Series offers the highest level of durability and strength, making it ideal for emergency exits, mechanical rooms, stairwells, and other restricted areas where quick exit is essential but exterior entry must be prevented.
Key Features & Benefits
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Exit Function Design – Interior thumbturn operates the deadbolt; no outside cylinder for added security.
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ANSI/BHMA Grade 1 Certified – Built to the highest performance standards for strength and reliability.
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Hardened Steel Deadbolt – 1″ throw bolt resists tampering and forced entry.
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Heavy Duty Construction – Reinforced steel case and brass components ensure long-lasting performance.
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Ideal for Restricted Areas – Perfect for stairwells, emergency exits, utility doors, and back-of-house spaces.
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Universal Handing – Non-handed design works with left- or right-swing doors.
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Flexible Installation – Fits standard door preps with multiple backset options.
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Finish Options – Satin Chrome (26D) and additional architectural finishes available.
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Maintenance-Friendly – Simplified design allows for easy servicing and long-term reliability.
Specifications
| Door Thickness | 1 ¾″ to 2″ (standard) |
| Backset | 2 3⁄8″ (60 mm) standard, 2 3⁄4″ (70 mm) optional |
| Bolt | 1″ throw, hardened steel, anti-saw design |
| Case / Housing | Heavy duty reinforced steel case |
| Cylinder | None (non-keyed design) |
| Inside Trim | Thumbturn only |
| Handing | Non-handed, reversible |
| Function | Exit (non-keyed) |
| Finish Options | Satin Chrome (26D) and other architectural finishes |
| Certification | ANSI/BHMA Grade 1 |
| Strike | Heavy-duty strike with optional strike box |
Why Choose the Sargent 489 Series?
The Sargent 489 Series Exit Function Deadbolt is a trusted solution for doors requiring inside-only operation with no exterior access. With its Grade 1 certification, hardened construction, and non-keyed design, it’s ideal for emergency exits, secure utility spaces, and restricted access areas where safe egress is essential.
Manufacturer Resources
Product Specs
- Category:
- Mechanical Locks
- Series:
- 480 Series
- Grade:
- Grade 1
- Keyed:
- No
- Subcategory:
- Deadbolts
- Keyed Function:
- Non-Keyed
- Product Type:
- Deadbolts
- Commercial/Residential:
- Commercial
- Lock Function:
- One-Sided
- Product Group:
- Mechanical Locks
- Product Subgroup:
- Deadbolts
- Duty Level:
- Heavy Duty
- Product Attribute:
- Deadbolts
- Product Function:
- Blank Plate x Thumbturn
- Door Hand Direction:
- Non-Handed