Carbine Aintree SS9000 Entrance Knobset C4

Carbine Aintree SS9000 Entrance Knobset Overview & Applications

Replacing worn hardware or pricing up a commercial building schedule goes much faster when your lock footprint matches existing door cutouts. Australian locksmiths and builders specify the Carbine Aintree SS9000 Entrance Knobset because its internal springs, fixing bosses, and working clearances suit Australian residential front entry doors, bedrooms, bathrooms, hallways, and home offices (35mm to 45mm thick). Retrofits standard 54mm holes left by Gainsborough Contractor/G4, Lockwood Velocity/Tylock, and Lane tiebolt handle sets.

Pair this item with matching hardware in our Residential Leversets & Knobsets range or check our Complete Stocked Lock & Hardware Catalogue. On commercial, strata, or rental upgrades, always follow the Standards Australia AS 4145.2 Residential Lockset Durability Standards.

Door Prep & Fitment: SS9000 Cylindrical Tiebolt Lockset

Before ordering replacement hardware, run a tape measure over your existing cutout. When checking SS9000 cylindrical tiebolt lockset on site, the SS9000 is built around drops straight into standard 54mm circular face holes with a 25mm edge bore and an adjustable 60mm to 70mm tubular latch (65mm rose covers existing paint lines). Matching your existing hole centres and backset lets you swap worn parts cleanly without patching timber.

3-Step Fitting Guide: 60mm to 70mm Adjustable Latch Backset

Follow these three practical steps for 60mm to 70mm adjustable latch backset so the mechanism lines up cleanly on the first pass:

1. Check your existing 54mm face hole and adjust the supplied tubular latch to match your 60mm or 70mm backset.
2. Slide the latch into the 25mm door edge hole and feed the tiebolt handle posts through the latch housing.
3. Secure the internal mounting screws, clip on the concealed rose cover, and test latch retraction against the D-strike or T-strike.

Build Quality & Standards: 54mm Cross Bore Door Preparation

Lightweight variety-store hardware quickly suffers from handle sag, surface pitting, or sticky latches under Australian sun and coastal air. The genuine SS9000 features concealed-fix rose cover plates, heavy-duty dual compression return springs to prevent handle sag, and a stainless steel latch tongue. Engineered around 54mm cross bore door preparation, every internal spring and load-bearing surface is built to handle heavy daily foot traffic.

C4 Keying Options & Melbourne Warehouse Dispatch

For single-key convenience across your property, the SS9000 includes a 6-pin C4 brass cylinder for single-key convenience across your home. If you are ordering multiple compatible C4 cylinder locks and want them all pinned to one shared key before shipping, simply add our in-house Custom Keyed Alike Service (SKU: KA) to your cart.

Orders ship from our Melbourne, Victoria warehouse within 24 to 48 hours Australia-wide (free shipping over $149.95 AUD). Browse our Complete Hardware Catalogue or call (03) 9306 6760 or 0421 149 760.