snap hook

a bagmaking essential

Snap hooks are hardware components commonly used in bagmaking to attach straps, handles, or removable shoulder straps to bags, but they can also be used a bag closures

Their spring-loaded gate mechanism allows for quick and easy attachment and detachment.  

Snap hooks are also commonly referred to as swivel hooks, highlighting one of their main benefits: Swivel hooks are designed to rotate 360 degrees, which prevents straps from twisting or tangling. This rotation makes them particularly useful for shoulder straps, as it allows the strap to move freely while the bag stays in place. However, not all snap hooks have swivels, which is the main reason we prefer the more generic term snap hook. 

It is also referred to as: swivel hook or swivel snap. 

size matters

When you buy a snap hook, the size that is indicated refers to the inner width of the loop or ring. This is the most important measure since you have to match it to the width of the strap you intend to use.

Question: How much tolerance is acceptable for a good strap – snap hook fit?

Answer: A deviation up to 2mm both up or down is perfectly acceptable for a good fit. So e.g. a strap of between 36-40mm will usually fit into a 38mm snap hook. More space will make your strap susceptible to twisting, less space will make it almost impossible to feed through.

Question: Are there any other important things to keep in mind when selecting a snap hook?

Answer: Most things are a matter of taste or preference, i.e. the shape of the loop, type of spring mechanism or shape of the hook. Keep in mind though that small basic snap hooks might not be suitable to hold heavy loads. 

common styles

Snap hooks can be found in many different styles. The all have a spring mechanism in common, but some have a lever (just push), others use triggers or bolts to operate the snap. Some can rotate, others can not. 

How to apply

When making a detachable strap, 2 snap hooks are used. On one side, the snap hook is used to thread a strap through, thus forming a loop that goes back to the strap slider. The hook on the other side can either be attached by sewing or by using rivets or chicgo screws.