SC4 Schlage LockBuster Killer Key - Set of 2 Professional Locksmith Lockout Tool
Set of 2 LockBuster SC4 Killer Keys pre-cut to disable a Schlage SC4 6-pin commercial cylinder when inserted. Built for locksmiths, property managers, landlords, building maintenance teams, and rental property owners who need to quickly secure a commercial Schlage lock against unauthorized access until it can be re-keyed or replaced.
Cuts to the longer 6-pin SC4 keyway used in commercial Schlage cylinders, master keyed systems, apartment buildings, office buildings, multi-family properties, and higher security Schlage hardware. Two keys per set so you have a backup on the truck or in the shop.
Product Details and Shipping
Quantity: 2 keys per set
Keyway: SC4 (Schlage "C" keyway, 6-pin commercial)
Pin Count: 6
Type: Pre-cut lockout key (LockBuster Killer Key)
Compatible with: 6-pin Schlage commercial cylinders and master keyed Schlage systems
Material: Nickel-plated brass
Finish: Polished silver
Bow Style: Standard Schlage commercial bow
Stamp: SC4
Use: Professional locksmith and property management lockout tool
Condition: Brand new, unused
Free shipping with tracking included on every order. Ships USPS Ground Advantage within one business day from a smoke free shop in Mesa, AZ. Fast shipping is a priority - orders placed before noon local time typically ship the same day. Combined shipping is automatic on multi-set orders, all keys go out in one package at no extra cost.
Important Notes - All Sales Final
This is a professional locksmith tool. By purchasing this item, you confirm you are the legal owner of the lock you intend to use it on, or you are an authorized locksmith, property manager, or maintenance professional acting on the property owner's behalf. The buyer is solely responsible for proper and lawful use. Misuse of lockout keys to disable property you do not own or are not authorized to access may violate local, state, or federal law.
Once inserted into a lock, a LockBuster killer key is designed to disable the cylinder. The affected cylinder will require professional re-keying or replacement to restore function. Buyer is responsible for verifying the lock is an SC4 6-pin Schlage cylinder before use. Will NOT fit 5-pin SC1 residential Schlage locks, Kwikset, Yale, or other non-SC4 keyways.
ALL SALES FINAL. NO RETURNS ACCEPTED. Due to the specialty nature of this professional locksmith tool and the security implications of chain-of-custody for lockout devices, all sales are final and no returns are accepted. Please confirm your lock is an SC4 6-pin Schlage cylinder before purchasing.
Frequently Asked Questions
What is a LockBuster killer key?
A LockBuster killer key, also called a lockout key or disabling key, is a pre-cut key designed to render a lock cylinder inoperable. When inserted into the matching keyway, it prevents the original key from turning the lock. It is a professional tool used to quickly secure a lock against unauthorized access.
Who uses these?
Locksmiths, property managers, landlords, commercial building maintenance teams, and apartment complex managers. Common use cases include disabling a lock after a tenant moves out without returning keys, securing a commercial property after a break-in attempt while waiting for a re-key, evictions, and emergency lockouts where immediate disabling is required before a full lock replacement.
Will the lock still work after using this?
No. That is the purpose of the tool. After a LockBuster killer key has been used on a cylinder, the lock will need to be professionally re-keyed or replaced before it will operate again. Plan to schedule that work before using a killer key.
Will it fit my Schlage lock?
Only if your lock is a 6-pin SC4 Schlage commercial cylinder. Most standard residential Schlage locks are 5-pin and use the SC1 keyway. SC4 is the longer 6-pin commercial version found in higher security cylinders, multi-family properties, office buildings, and master key systems. If your existing key has 5 cuts, you need our SC1 LockBuster listing instead.
What is the difference between SC1 and SC4?
SC1 is the standard 5-pin Schlage residential keyway used in most home Schlage locks. SC4 is the 6-pin commercial variant with a longer blade, found in commercial buildings, master keyed systems, and higher security Schlage cylinders. The bow shape can look similar. The difference is the blade length and pin count. Count the cuts on your current key to determine which one you need.
Is this legal?
Yes, LockBuster killer keys are legal locksmith tools sold openly. However, the buyer is responsible for lawful use. Using a killer key on a lock you do not own or are not authorized to disable may violate trespassing, vandalism, or property damage laws depending on your jurisdiction. By purchasing, you confirm you intend to use the tool lawfully.
How fast do you ship?
Fast shipping is a priority. Same-day shipping on orders placed before noon local time, next business day otherwise. Free USPS Ground Advantage shipping with tracking included on every order, shipped from Mesa, AZ.
Do you accept returns?
No. All sales are final. Due to the specialty nature of this professional locksmith tool and chain-of-custody considerations for lockout devices, returns are not accepted. Please verify compatibility and review the product carefully before purchasing.
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