Protecting living spaces starts with reliable sash locks for double hung windows. This guide highlights five top options designed for durability, ease of use, and compatibility with common window styles. Each product is evaluated on build quality, installation simplicity, and security features to help homeowners choose confidently.
| Product | Brand | Type | Key Feature | Amazon Link |
|---|---|---|---|---|
| Nkiy Quen 4 Pack Windows Sash Lock | Nkiy Quen | Sash Lock Set | Corrosion-resistant alloy; includes 16 screws | View |
| Prime-Line F 2744 Sash Lock | PRIME-LINE | Diecast Sash Lock | White enamel finish; versatile for single/double hung | View |
| Prime-Line F 2762 Diecast Sash Lock | PRIME-LINE | Diecast Satin Finish | Bronze baked-on enamel; for vertical/hung windows | View |
| Prime-Line F 2588 Sash Lock | PRIME-LINE | Vinyl Window Sash Lock | 2-1/16 in. mounting centers; cam-type locking | View |
| HIMOMO Window Sash Locks | HIMOMO | Cam Action White Locks | 10-pack with screws; cam action for tight locking | View |
Choosing the right double hung window lock depends on window construction (vinyl vs wood), mounting hole centers, and desired finish. The selections below cover a range of materials and finishes, focusing on reliability, ease of installation, and strength against forced entry while remaining affordable for typical residential use.
Nkiy Quen 4 Pack Windows Sash Lock

The Nkiy Quen sash locks come in a 4-pack, providing 16 screws for installation across multiple windows. These white cam-style locks are designed for both vertical and horizontal sliding windows, and their alloy construction with corrosion-resistant coating aims to endure daily use in varied climates. With 2.4 inches on-center mounting holes and a 0.9-inch wide cam lock piece, they are compatible with many standard sash configurations. This set is suited for replacing loose or worn-out locks to keep sash alignment and security intact in homes or small offices.
Prime-Line F 2744 Sash Lock

This diecast sash lock from PRIME-LINE emphasizes durability and versatility. It is designed to work on both single and double hung windows, accommodating wood and vinyl frames. The white enamel finish provides a clean, contemporary look while protecting against the elements. The unit is built to last, offering dependable performance over time in residential window systems where alignment and a secure seal are crucial for energy efficiency and security.
Prime-Line F 2762 Diecast Sash Lock

The Prime-Line F 2762 lock is a silver-painted diecast piece designed for double hung windows. Its bronze baked-on enamel finish adds corrosion resistance and a polished appearance. Specifically marketed for vertical sliding, single and double hung windows, the lock aims to provide a straightforward, lasting security upgrade with minimal installation complexity. This option suits homeowners seeking a classic, unobtrusive hardware upgrade.
Prime-Line F 2588 Sash Lock

With 2-1/16 inch on-center mounting holes, the Prime-Line F 2588 is designed for vinyl single and double hung sash windows. The cam-type locking mechanism draws the window lock keeper and the vinyl meeting rails together, producing a tighter seal and enhanced security. This option is well-suited for vinyl window replacements or upgrades where a clean, low-profile locking solution is desired.
HIMOMO Window Sash Locks 10 Pack

HIMOMO offers a ten-pack of cam action white window locks designed for sliding and double hung windows. The kit includes 40 screws and features 53 mm hole-to-hole spacing, which suits a broad range of sash configurations. The diecast zinc alloy construction with multi-layer electroplating provides corrosion resistance and durability. The cam action hook pulls the keeper tight to improve security and window integrity, making this a robust choice for households seeking quantity and reliability.
Xosjska 10 Pack Window Sash Locks

The Xosjska set includes 10 white cam action sash locks with a 53 mm hole center and a durable zinc alloy diecast body. A cam action design ensures the keeper is drawn tight, reducing the likelihood of unauthorized opening. The construction emphasizes weather resistance and long-term reliability for both double hung and sliding windows, supporting security in varied climates. This assortment is practical for multiple-window upgrades or replacements across a home.
Buying Guide: Key Purchase Considerations
- Window compatibility: Check hole spacing (center-to-center), lock type (cam action, diecast), and whether the lock fits vinyl, wood, or composite frames. Ensure the lock aligns with existing meeting rails for a secure fit.
- Material and finish: Diecast zinc alloys offer durability and corrosion resistance. Finishes (white, bronze, silver) should complement window frames and resist wear from sun and moisture.
- Locking mechanism: Cam action locks provide a tighter seal by drawing the keeper toward the rails. Assess whether you want a simple latch or a more robust locking system for enhanced security.
- Installation: Look for kits that include screws and clear mounting dimensions. Acrylic or enamel-coated finishes help resist chipping during installation.
- Quantity: For multi-window homes, a pack with multiple locks plus screws saves time and ensures uniform security across rooms.
- Maintenance: Choose locks that resist rust and corrosion to minimize maintenance. Regular inspection helps ensure the alignment remains correct and the locking mechanism operates smoothly.
- Security and aesthetics: Consider whether a low-profile, white finish or a more decorative bronze finish better suits the home’s exterior and interior design.
- Warranty and support: Check product warranties and seller support in case of compatibility concerns or parts replacement needs.
Across these options, homeowners can balance price, durability, and ease of installation while addressing specific window types and climates. For most residences, selecting a diecast or alloy lock with cam action and a compatible mounting pattern yields the best combination of security and longevity for double hung windows.