Window sash lock replacements : SWISCO.com

Home Owner from Somerville, MA 02143 USA

Jul 9, 2026 3:03 pm

Hello, my home has double hung windows manufactured by Bonneville 26 years ago.
I have a number of sash locks are broken and was wondering if you had replacements. My sash locks are metal.
Thank you.

5 user uploaded images

6 Replies

Bob from SWISCO

Jul 13, 2026 1:13 am

Hey there. Could you write out the hole spacing, or the distance between the center of each mounting hole, on the sash lock? We'll do our best to help from there.

Home Owner from Somerville, MA 02143 USA

Jul 13, 2026 9:56 am

Hello, per the image I uploaded, the holes appear to be 2 inches on center. Thanks and let me know if you need anything else,

Bob from SWISCO

Jul 13, 2026 2:55 pm

We don't carry a sash lock with 2" hole spacing, center-to-center, but I am wondering if it is 2-1/16". See the 90-278. Compare the dimensions to your old lock and let us know if anything seems off, and if so, how.

Dimensions for 90-278

Home Owner from Somerville, MA 02143 USA

Jul 13, 2026 3:20 pm

I can accept that it might be 2 1/16. Can I order a set to start? If they work, I will order more.
Please let me know how to proceed with purchase. Thank you.

Bob from SWISCO

Jul 14, 2026 3:30 pm

The 90-278 can be ordered right through its online shop page. From the 90-278 shop page, simply click "Add to Cart" to commence the checkout process. If the 90-278 proves to not be right, see our Return Policy here.