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First Watch Single Cylinder Interlocking Deadbolt - EACH (Brass Tone)

List Price: $21.59

Sale Price: 19.43

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  • Return Policy
First Watch understands the importance of supplementing primary entrance door locks by providing an array of high quality products for all levels of protection. The single cylinder interlocking deadbolt features:

  • 5-pin tumbler with hardened steel pins, Weiser Keyway.
  • Door thickness: 1-3/8" to 2-1/4".
  • Single cylinder locking unit and strike.
  • Locks door to jamb to prevent forced entry.
  • 1-1/4” hole required.
  • Includes tamper-resistant shutter guard.

Manufacturer: First Watch Security
Manufacturer Location: varies by item
Color/Finish: brass
Material: zinc alloy/steel
Type: latchbolt
CAUTION: Do not unscrew small retaining screws at rear of cylinder. Use only dry lubricant (graphite) on lock. Keep keyway clear of foreign objects.
  1. Select convenient height for lock and place template against edge of door.
  2. Mark hole positions. Bore 1-3/8″ hole for cylinder where indicated. Note: Bore through door until tip of drill barely emerges from other side. Remove drill bit and complete hole by drilling from opposite side to reduce splintering.
  3. Drill 3/32″ diameter holes 1/2″ deep for attachment screws.
  4. Insert cylinder and trim ring from outside of door. Attach back plate with two connecting bolts. Note: If bolts are too long, saw or break at groove, using caution to avoid marring the thread.
  5. Cut or break connecting bar so it projects 3/8″ to 1/2″ beyond the inside of the door.
  6. Place lock on door so connecting bar enters “X” slot in back of lock. Secure with large mounting screws.
  7. Align strike carefully, using template as a guide. Draw outline of strike on door jamb trim and chisel wood away (mortise) so strike mates freely with locking bars.
  8. Mark mounting holes for strike, drill pilot holes, and secure strike to door jamb with screws provided.
-California Residents-
WARNING: This product can expose you to chemicals including lead and/or wood dust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

First Watch Security Restock Policy

No restock fees apply for returns of this specific item. Product must be returned in re-sellable condition within 30 days to qualify.

If an item is returnable (See restocking list), you must first call or use form below to request a return goods authorization (RGA) prior to returning any items purchased through us.

We will not accept any returns without an RGA. All items must be returned in "Re-Saleable Condition", in original packaging with all parts included. Customer is responsible for shipping charges.

Our restocking policies vary, depending on manufacturer and item.

Click here for our restocking fee schedule. Please call or email us with any other questions you may have on returns.

Click here to request a Return Authorization