Lock Spindle - SP-300 Extended Spindle – 300mm (7.6mm Square)
This is a 300mm extended square spindle designed for use with locks and smart lock installations where additional length is required. Manufactured to a standard 7.6mm profile, it is ideal for thick doors, gates, or custom applications where a standard spindle is too short.
Extra Length for Non-Standard Doors
At 300mm long, the SP-300 is suited to installations where door thickness or hardware configuration exceeds standard spindle lengths. Commonly used on gates, commercial doors, or retrofits involving smart locks and mechanical hardware.
Standard 7.6mm Square Profile
Designed to suit most Australian lock hardware requiring a 7.6mm square spindle, ensuring compatibility with a wide range of lever sets, latch mechanisms, and smart lock internals.
Cut to Size Flexibility
The extended length allows the spindle to be cut down on-site to suit your exact door thickness and hardware setup, providing a clean and precise fit.
Ideal for Smart Lock Installations
Particularly useful when retrofitting smart locks onto thicker doors or non-standard applications where factory spindles are insufficient in length.
Not sure if this spindle will suit your lock?
Send us a photo of your lock or door setup and we’ll confirm compatibility before you order.
Ask an ExpertSpecifications
- Brand: Generic
- Model: SP-300
- Type: Square spindle
- Length: 300mm
- Profile Size: 7.6mm (standard square spindle)
- Material: Steel
- Application: Locksets, leversets, smart locks
What’s Included
- 1 × 300mm spindle (7.6mm square)
Frequently Asked Questions
Can this be cut down to size?
Yes — the spindle can be cut to suit your specific door thickness and installation requirements.
Is this compatible with all locks?
It is compatible with most locks that use a standard 7.6mm square spindle. Always check your lock specifications before purchase.
Will this work with smart locks?
Yes — this is commonly used when installing smart locks on thicker doors where the supplied spindle is too short in applications where the lock requires a square 7.6mm spindle
What tools are required to cut it?
A grinder or hacksaw is typically sufficient. Ensure a clean cut to maintain proper fitment.
Additional Information
Always ensure the spindle length is correctly matched to your door thickness and hardware configuration. An incorrectly sized spindle can result in poor handle operation or failure of the locking mechanism. When cutting to size, measure carefully and allow for correct engagement into both sides of the lock.
It can be overwhelming with all the choices out there. We can help! We are experts with decades of experience in fitting locks of all types, not just Smart Locks. It is a free service we offer, and with just some photos and a few minutes of your time you can get expert advice and product recommendations tailored precisely to suit your needs.
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