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Polished brass single cylinder deadbolt with interior turn knob and three keys

Em-D-Kay Padlocks

Em-D-Kay Padlocks D30503 Single Cylinder Deadbolt door lock

SKU CH-E4BF-G63BV MPN D30503

Single cylinder deadbolt in polished brass with adjustable backset, SC1 keyway and three keys

  • Lock keyingKeyed Different
  • Surface finishPolished Brass
  • Sold asBox
  • Keyed entry from outside, thumb-turn inside
  • Commercial-grade construction for high-traffic doors
  • Fits standard doors with adjustable 2-3/8" to 2-3/4" backset
  • SC1 keyway works with common key systems
  • Three keys included in the box

Single-Cylinder Deadbolt with Adjustable Backset

This Em-D-Kay D30503 is a commercial-grade single-cylinder deadbolt finished in polished brass US3. It operates with a key on the exterior and a turn knob on the interior. The backset adjusts between 2-3/8 inches and 2-3/4 inches to fit common door preparations. The box includes the deadbolt, latch assembly, and three SC1 keys.

Suits Standard Doors; Not for Double-Cylinder Needs

This lock suits residential or commercial doors requiring a single-cylinder deadbolt with an adjustable backset and SC1 keyway. It is not for buyers who need a double-cylinder deadbolt that requires a key on both sides. It is also not for doors with a fixed backset outside the 2-3/8 to 2-3/4 inch range.

SC1 Keyway and Three Keys Included

The cylinder uses the SC1 keyway, a common profile for key duplication and rekeying. The package supplies three cut keys so the lock works immediately. This keyway determines which existing keys can operate the lock or whether a locksmith can match it to your current system.

How it compares

Measured against everything we stock in Door Lock Sets & Deadbolts, at today’s prices. Recalculated every night.

Price $23.99
Cheaper than about 67% of the 2,145 comparable items (median $55.99).

Specifications

Product
Brand nameEm-D-Kay
Model nameD30503
Size & build
Surface finishPolished Brass
More details
Lock keyingKeyed Different

Questions about this item

What door thickness and backset range does the D30503 fit?

The deadbolt adjusts from 2-3/8" to 2-3/4" backset and includes the latch and strike hardware for standard residential doors.

Can the SC1 keyway match my existing house keys?

Yes, the SC1 keyway is compatible with most Schlage-type keys, so a locksmith can re-key it to your current key.

How do I verify the bolt throws fully after installation?

Turn the interior thumb-turn and the exterior key; the bolt should extend and retract smoothly into the strike without binding.

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