single cylinder deadbolt lock
SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt - Seny Hardware
SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt - Seny Hardware
SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt - Seny Hardware
SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt - Seny Hardware
SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt - Seny Hardware
deadbolt door knob
door knobs and deadbolts
deadbolt lock with key on both sides
black deadbolt lock
single deadbolt lock
schlage primus deadbolt

SENY Round Deadbolt Lock – Classic Single Cylinder Keyed Entry Deadbolt

$45.99
or 4 interest-free payments of $20.00 with Shop Pay
  • A timeless round profile that fits almost any door.
  • Clean enough for modern, familiar enough for classic homes.
  • Simple keyed protection for everyday entry use.
  • Balanced security without harsh lines.
  • An easy exterior deadbolt replacement that always works.
Finish:Satin Nickel
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✔ FREE U.S. SHIPPING

Free shipping on all orders.

✔ SHIPS FAST FROM U.S.

Most orders dispatch within 1 business day.

✔ EASY RETURNS & WARRANTY

30-day returns + 2-year coverage.

FAQ

  1. Can Seny hardware be customized for DIY projects?
    We offer personalized engraving services for DIY enthusiasts, making every door handle truly one of a kind and connecting the warmth of home with a personal touch.
  2. What finishes are available for door hardware?                                                        Seny Hardware offers a wide range of finishes, including Matte Black, Brushed Copper, Faux Gold, Brushed Red Bronze, Highlighted Red Bronze, Brushed Nickel, Polished Chrome, Antique Brass, Aged Brass, and Champagne Bronze — crafted to elevate any interior.
  3. Is Seny Hardware suitable for the exterior of my house?                                        Yes, our door handles and pulls are protected with a powder-coated anti-corrosion finish and have undergone rigorous quality testing for residential use. In addition, all of our hardware is thoroughly tested for quality before shipping.               
  4. How quickly can I get my order?                                                                               
    Most orders ship within 1–2 business days, and transit time varies by location—typically 2–7 days (Standard) or 1–2 days (Expedited). You’ll receive a tracking number once your package ships!
  5. Do your mortise locksets include keys?      
    Yes, the package contains one deadbolt, strike plate, latch, and two skeleton keys.
  6. What is the backset of your mortise lock?                                                                2.36"– We do not offer any other size.
  7. Will your interior mortise lock chassis fit all older doors with mortise locks?      Compatible with most interior doors and can adapt 2.36"backset.
  8. Are crystal door knobs hard to use in winter because they feel cold?                   While crystal naturally feels cooler to the touch during winter, they will warm up quickly with use.Many customers choose them because they not only function perfectly as hardware but also add a unique decorative accent that elevates the entire space.
  9. What do I do if someone locks themselves in a room?                                            There is a small hole in the Rosette or Plate on the exterior side of the door that can be used to unlock a “locked” privacy door. Insert a straightened paper clip or something of similar size into the privacy hole and gently push to unlock the privacy.

  10. Do the screw holes match?                                                                                         Generally, our screw holes and locks are designed to be compatible. If you encounter any mismatch issues, please take a photo and contact our after-sales customer service for help.                                                                                         

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Why Customers Love It

TIMELESS DECORATIVE DESIGN

Thoughtfully crafted hardware that adds refined character to doors, drawers, and cabinets.

SOLID & DURABLE CONSTRUCTION

Built with quality metal components for smooth performance and dependable everyday use.

EASY INSTALLATION & FUNCTION

Standard fitting and practical configurations make setup simple for interior and entry applications.

MULTIPLE FINISHES & OPTIONS

Available in versatile finishes and styles to complement both modern and vintage homes.

Round Deadbolt Lock with Timeless Everyday Security

Some front door hardware never feels out of place. This round deadbolt lock is designed for homeowners who want dependable keyed security in a clean, familiar profile that works across a wide range of exterior door styles.

With its smooth circular trim, balanced proportions, and reliable single cylinder operation, it delivers the kind of everyday protection that feels simple, solid, and timeless.

Classic Round Deadbolt Design

The round deadbolt shape offers:

✔ A softer universal profile
✔ Easy coordination with both modern and traditional hardware
✔ A clean front door finish without overly decorative trim

Its understated design makes it one of the most versatile deadbolt styles for residential doors.

Reliable Single Cylinder Keyed Security

Designed with a keyed exterior cylinder and interior thumb turn, this classic round deadbolt provides:

✔ Secure exterior keyed locking
✔ Quick interior unlocking
✔ Smooth daily lock engagement

A practical front door security solution built for daily residential use.

Built for Front Door & Exterior Applications

Ideal for:

✔ Front doors
✔ Back exterior doors
✔ Side entry doors
✔ Everyday residential deadbolt replacement

Well suited for homeowners seeking a straightforward keyed deadbolt that fits nearly any exterior setup.

Durable Construction for Long-Term Use

Crafted from premium metal materials for:

✔ Strong internal locking performance
✔ Corrosion resistance
✔ Smooth operation over time
✔ Long-lasting finish durability

Built to handle repeated use without sacrificing reliability.

Standard Compatible & Easy Installation

✔ Adjustable backset: 2-3/8" or 2-3/4"
✔ Fits standard U.S. door thicknesses from 1-3/8"–1-3/4"
✔ Suitable for replacement and new installations

Built for Everyday Confidence

Backed by a 2-year warranty, this round deadbolt lock offers dependable front door security, universal style compatibility, and long-term peace of mind.

Important Notes

  • Due to production batch variations, slight color differences may occur

  • California Proposition 65 Warning
    Cancer and Reproductive Harm — www.P65Warnings.ca.gov