HB 640 Sliding Door Lock

By Halliday & Baillie

Halliday + Baillie

Select your finish to view price:

Halliday+Baillie HB 640 Narrow Backset Sliding Door Lock

The Halliday Baillie HB 640 sliding door lock functions like the HB 630, keyed on both sides, but with a narrow backset of 33mm and a lock body depth of 45mm. The HB 640 requires a full profile cylinder.(sold separately)

It is designed for use in aluminum or timber sliding doors with narrow stiles (min. 2”). For a Patio Set with just a snib on the exterior, specify HB 642 with a half profile cylinder. Sliding the snib on either side operates the bolt unless the cylinder is engaged. The cylinder locks the snib; the key does not operate the bolt.

Made in New Zealand.


Minimum Door Thickness: 38mm (1.50”)

Backset: 33mm (1.30”)

Flush Pulls: 250mm (9.80”) x 36mm (1.41”) x 14mm (.55”)

Material: Diecast zinc with brass and 316 stainless steel


  • SC: Satin Chrome
  • BC: Brushed Chrome
  • PC: Polished Chrome
  • BN: Brushed Nickel
  • PN: Polished Nickel

NOTE : We strive to keep a healthy stock in the above finishes but it is possible we may not have your quantity available to ship right away. If you need it fast, we recommend you call us to confirm a lead time. Your order will ship out as soon as your hardware is available by your chosen shipping method. 

(expect approx. 10 week lead time on these finishes) : 
  • EDB: Electro Dark Bronze (by special order only)
  • KC: Black Chrome (by special order only)
  • WT: Powder-Coated White (by special order only)
  • BLK : Powder-Coated Black (by special order only)

    Package Includes:

    • HB 640 Narrow Backset Lock Body
    • 2 Flush Pulls w/ HB 604 Timber Fixing Kits
    • Strike and Dust Box
    • Spindle (please specify door thickness)
    • Fasteners

    More Info:

    Full Profile Cylinder sold separately. Call us to discuss your specific situation.

    For 1⅜” thick doors, refer to HB 690/35

    LEADTIME: Please be aware that due to the current popularity of the HB 640 and the usual lead time of 4 to 6 weeks for some finishes, we suggest you call to check on current stock levels if you require this product quickly. We will do our best to fulfill your order as soon as possible. +1-888-636-1627

    Downloads : HB 640 Spec Sheet

    HB690 Installation Video