Union 3K74E 67mm BS3621 Kitemarked Sashlock Satin Chrome

  • 67mm case size
  • 44mm backset
  • Satin chrome finish
  • BS3621 Insurance rated lock
  • External door lock with 5 Lever action
  • Not pierced to accept bolt through fixings
  • Complete with strike plate, fixings & 3 keys
  • Single (EACH)
In stock
  • Buy 5 for £94.57 each and save 5%
  • Buy 10 for £89.60 each and save 10%
  • Buy 15 for £84.62 each and save 15%
  • Buy 20 for £79.64 each and save 20%
Unit of Sale
Single (EACH)
2-4 Working Days
Delivery information
Orders Under £20
2-3 days
Between £20 and £75
3-5 days
Orders Over £75
3-5 days
Any Value
Next Working Day
Any Value
Next Day By Noon
Any Value
Saturday Delivery
Orders for 1x Door
3-5 days
Orders for 2 or more Doors
3-5 days

Product Overview

The Union 3K74E 67mm BS3621 Kitemarked Sashlock Satin Chrome is a commonly used lock for household external doors and is available with brass or silver forend and strike box. The Chubb name is no longer used to market the 3K74E as it now comes under the banner of Union (Assa Abloy), and it still comes with the familiar brass key blank associated with the old Chubb brand.

The deadbolt is locked or unlocked by the key from either side whilst the roller latchbolt is withdrawn by the lever handle fitted to either side.  The roller latchbolt means the lock is suitable for either left hand or right hand hung doors without the need for reversal. 

Other Variations

The lock is also available with an 80mm case size (57mm backset) and with a polished brass finish. Some of these variations can be found in the related products.

BS3621 Insurance Company Approved

Like all BS3621 approved locks the 3K74E is kitemarked and most household insurance companies insist on the use of at least one approved kitemarked lock per external door.

Rebates are available if required and we can key alike a series of locks for convenience, please contact customer services for further information, however allow us time to key your locks alike.


  • Not pierced to accept bolt through fixings
  • 5 Lever operation
  • BS3621 insurance approved and Kitemarked
  • Universal roller latch
  • 3 Keys per lock
  • Rebate sets available to order
  • Keyed alike locks available to order

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