All About Window Hardware

Find out about different types of hardware for casement and sash windows.

Window hardware typically comes with any new window that you purchase, but you can also replace hardware to match renovations or decorations in your home. Polished brass, chrome, antique brass, satin nickel, and oil rubbed bronze are just some of the many types of finishes you can choose from when selecting new window hardware. It is important to read the manufacturer's instructions on caring for your hardware so that it remains in good condition.

If you are renovating an older home and want to match your older hardware on newer windows, there are antique reproduction hardware options available for many types of windows: sash and pulley windows, casement or crank operated, screen and storm windows, as well as shutters and other related hardware. It is possible to make good discoveries at local specialty shops and flea markets, but if you are seeking something in particular, start by looking on the Internet.

Casement Furniture

Choose casement window furniture that will work with your window type and style. There are three main types of casement fastener used to hold windows shut. Stays can either keep a window closed, or can fasten it in an open position to stop it slamming. Both a fastener and stay may be fitted to the same window.

Casement Fasteners

A wedge or mortise type fastener is used when a casement closes against the frame, a hook fastener when the closed casement and frame sit flush. Some fastener sets include both mortise and hook options.

Fastener Set The short arm at the end of the fastener (Image 1) slots into a groove (mortise, Image 2) cut into the frame, or onto a hook (Image 3).

Wedge Fastener The fastener (Image 1) has an aperture that slots onto a wedge (Image 2) that is fixed to the window frame.

Casement Stays

Stays are long bars with holes in them (Image 1) that are fitted to the opening casement of a window. Separate "pins" (Image 2) are positioned on the window frame. The holes on the stay can be slotted onto both pins to hold the window tightly closed. Alternatively any hole can be slotted onto either pin to keep the window open the desired amount.

Sliding stays are a different design that move within a bracket. A screw mechanism is tightened to hold the casement in the required position.

Sash Furniture

Sash window hardware is designed to allow you to easily lift and lock the window in place. Sash hardware typically includes sash pulls, sash lifts, and locks. Not as common, sash stops can be used on both sides of the window for extra security. Available in a variety of finishes to match your decor, sash hardware typically has fewer moving parts than casement hardware. Shown below are some specialty sash window hardware.

Sash Fasteners

These hold the two sliding sections of a sash window together. They all work as two-part mechanisms, with one part fixed to each sash.

Quadrant Arm The arm swings under the hook on the opposite sash.

Quadrant Arm Swings Under Hook on Opposite Sash

Quadrant Arm Swings Under Hook on Opposite Sash

Photo by: DK - Do It Yourself Home Improvement ©2009 Dorling Kindersley Limited

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Unsprung Fastener A threaded bar is swung into a keep on the other sash. The bar has a nut on it that is tightened to secure the bar in place.

Unsprung Fastener is Two Part Closing Mechanism

Unsprung Fastener is Two Part Closing Mechanism

Photo by: DK - Do It Yourself Home Improvement ©2009 Dorling Kindersley Limited

DK - Do It Yourself Home Improvement, 2009 Dorling Kindersley Limited

Crank Window Hardware



©2007 Dorling Kindersley Limited

2007 Dorling Kindersley Limited

A very popular casement hardware choice is the hand crank hardware. Crank hardware is available in a variety of finishes and even integrated styles that fold away into the window sill, so that they do not stick out while not in use.

Hand Crank Cranks are levers that are attached to a rotating shaft. Using a rotating motion, the hand crank opens the casement window to the outside.

Keep Reading

Next Up

Home Window Repair Is Easy When You Know How

Take the mystery out of home window repair with these expert tips.

How to Choose the Best Exterior Window Trim for Your Home

Exterior window trim isn’t just a pretty face. It’s made to cover gaps keep your home sound and free from water, heat and humidity. 

How to Clean Window Blinds of All Types, From Vertical to Venetian

If you’re wondering how to clean blinds, here are simple tips for speeding you through this twice-a-year chore.

Choosing the Best Type of Window Replacement for Your Home

Determine whether a full or partial window replacement will give you the best return on your investment.

Windows Buying Guide

Learn the pros and cons of different types of windows, the various styles and latest trends.

Everything You Need to Know About Window Sills and Trim

Get tips for choosing the right window casing, installing it and maintaining it properly.

Window Basics: Learn the Types and Styles

Windows are available in a variety of designs and sizes. There are differences in opening mechanisms and structure, as well as glass. Learn about replacing and renovating windows, as well as installing catches, shutters and glazing.


Get Social With Us

We love to DIY. You love to DIY. Let's get together.

Consult Our A-Z Guide

Everything You Need to Know

Browse a full list of topics found on the site, from accessories to mudrooms to wreaths.  

How-To Advice and Videos

Get video instructions about kitchens, bathrooms, remodeling, flooring, painting and more.

Watch DIY Downloads Now

Watch DIY Network LIVE

Don't miss your favorite shows in real time online.