Product Details
LD-385 Zinc Alloy Cylindrical Lock Replacement Cylinder Deadbolt
LD-385 Zinc Alloy Cylindrical Lock Replacement Cylinder for knob and lever lockset replacement. Available in 5-pin or 6-pin configuration with SC1, KW1, or Y1 keyway, multiple decorative finishes, fits standard cylindrical locksets.
Core Features
- Zinc alloy or brass cylinder housing for durability
- Brass plug with nickel silver pins and springs
- 5-pin or 6-pin tumbler configuration options
- SC1, KW1, Y1 keyway profiles available
- Fits standard cylindrical knob and lever locksets
- 2-3 nickel silver keys included per cylinder
- Multiple decorative finish options to match any decor
Application Scenarios
- Residential knob and lever lock cylinder replacement
- Rental property and apartment building rekeying
- Commercial office lock maintenance and upgrades
- Locksmith service call replacement parts
- Hardware store and home center retail inventory
- Hotel and hospitality room lock rekeying
FAQ
How do I determine which replacement cylinder fits my lock?
To find the right replacement cylinder, first identify your lock brand or keyway type by comparing your key to SC1, KW1, and Y1 key profiles. SC1 keys have a distinctive shape with a longer blade and specific cuts, while KW1 keys have a shorter, wider blade. Y1 keys have a unique Yale-style profile. Next, measure the cylinder diameter (typically 25-30mm for standard cylindrical locks) and the tailpiece length (usually 20-35mm). The tailpiece is the flat metal piece on the back of the cylinder that operates the lock mechanism. Also count the number of pins (5-pin or 6-pin) by looking at the number of cuts on your key. If you are still unsure, remove your existing cylinder and compare it to the product photos or send us photos and measurements and our technical team will help you identify the correct replacement.
Can I replace just the cylinder without changing the entire lockset?
Yes, that is exactly what replacement cylinders are designed for. Cylindrical locksets are modular, and the cylinder can typically be removed and replaced without replacing the entire knob or lever assembly. This is much more cost-effective than replacing the entire lock, especially if the lock body is still in good condition. You might need to replace just the cylinder if you want to rekey the lock, change the finish to match new hardware, replace a worn or damaged cylinder, or upgrade security. Most standard cylindrical locks have a removable cylinder held in place by a small set screw or retention clip. Installation usually takes only 5-10 minutes with a screwdriver. If you are unsure whether your lockset has a replaceable cylinder, consult the manufacturer's documentation or contact us with the lock brand and model.
What is the difference between 5-pin and 6-pin cylinders?
The number of pins refers to the number of pin tumblers inside the lock cylinder. A 5-pin cylinder has five pairs of pins (top pins and bottom pins) that must be raised to the correct height by the key cuts to allow the cylinder to turn. A 6-pin cylinder has six pairs. More pins means more possible key combinations, which theoretically makes the lock more resistant to picking and bumping, and reduces the chance of accidental key duplication. 5-pin cylinders are the most common in residential applications and are compatible with standard SC1 and KW1 keyways. 6-pin cylinders offer higher security and are often used in commercial and institutional settings. When replacing a cylinder, match the pin count to your existing lock, or upgrade from 5-pin to 6-pin for enhanced security, keeping in mind that this will require new keys with the appropriate number of cuts.
Do you offer keyed alike or master key systems for these cylinders?
Yes, we offer comprehensive keying options for the LD-385 cylindrical lock replacement cylinder. Keyed alike (KA) means all cylinders in your order are operated by the same key, which is convenient for homes or businesses where you want one key to open multiple doors. Master key (MK) systems provide each cylinder with its own unique change key plus a master key that opens all cylinders in the system. We can also create grand master, great grand master, and construction keying systems for larger buildings with complex access requirements. Custom keying typically adds 3-5 days to production time and may have a minimum order quantity depending on the complexity. Our key systems are factory-mastered and use precision-cut nickel silver keys for consistent performance. Contact our sales team to discuss your specific keying needs and we will design a system that meets your security requirements.
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