Hasps and Staples Frequently Asked Questions

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What are Hasps and Staples?

Hasps and staples are two pieces of hardware that work in conjunction of each other to provide some security in opening and closing of a lid, door or cover. The hasp is a essentially a short length of hinge with one short leaf, and one longer leaf called the hasp arm. The hasp arm typically has an elongated hole or slot, but it could also be square or rectangular too. The staple is typically a metal pad with some kind of loop or ring formed or welded on it. When the slotted arm of the hasp is engaged with the loop of the staple, the loop extends through the arm and you can use some kind of lock or tie to prevent the hasp arm from being raised. Some fancier staples such as our STS914 incorporate a twisting mechanic to use instead of a lock to hold the arm in place.

What material choices do I have for Hasps and Staples?

Hasps and staples are available in type 304 stainless steel, cold rolled plain steel and aluminum with a stainless steel pin. Stainless steel offers both strength and corrosion resistance if your application will be outdoors or in a corrosive environment. While cold rolled steel offers strength at a lower cost. Aluminum with a stainless steel pin is also corrosion resistant and can be used in many outdoor applications that don't require the strength of stainless steel. All versions are available with or without mounting holes.

Where are Hasps and Staples used?

Hasps and staples are used in any applications where you have a lid, door or cover that needs to be secured with some kind of lock. The moving hasp arm has a slot that engages over the fixed staple so the staple loop goes through the slot. Once that happens, you can use a padlock or even a cable tie on the loop to prevent the hasp arm from being moved. The application typically isn't one where the level of security is extreme, but it does provide for a locking mechanism to deter tampering and opening.

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