Carbine 4000 Sandown Entrance Lockset

The Carbine 4000 Sandown Entrance Lockset (MPN: PS4000) is a heavy-duty cylindrical knobset engineered for Australian office doors, apartment entries, retail storerooms, and industrial buildings. It combines a 75mm circular stainless steel rose, a 6-pin PD brass cylinder with a C4 keyway, and a certified 2-hour fire rating tested to AS 1905.1 standards.

Designed to retrofit standard 54mm cross-bore door preparations without custom carpentry, every Carbine PS4000 entrance knobset ships with an adjustable 60mm to 70mm stainless steel latch bolt. All units sit in stock at our Victorian warehouse for 24-48 hour dispatch across Australia, backed by free shipping on orders over $149.95 AUD.

Carbine 4000 Sandown Entrance Lockset Specifications

Built with a concealed external fixing plate and visible internal mounting screws, this heavy-duty spherical knobset resists twisting and levering forces on high-traffic timber and metal-framed doors. Browse our complete commercial door locks range or review the core mechanical specifications below:

• Entrance Function (Exterior Key & Interior Turnsnib): Rotating the external key locks or unlocks the outside spherical knob without retracting the latch; turning the internal turnsnib locks the outside knob, while the inside knob always retracts the latch for immediate emergency egress.
• Adjustable Stainless Steel Latch: Supplied standard with a 60mm to 70mm adjustable backset tubular latch featuring a 12mm stainless steel bolt projection and deadlocking plunger (optional 127mm extended backset latch available separately).
• Door Thickness & Rose Footprint: Engineered for standard 35mm to 45mm thick hinged doors, with a 75mm diameter circular stainless steel rose that completely covers existing paint rings from older locksets.
• Concealed External Rose Assembly: A heavy-gauge steel mounting plate anchors beneath the internal rose, leaving zero exposed screws on the exterior side of the door.
• 2-Hour Fire Door Compliance: Tested and certified for up to 2 hours on fire-rated door assemblies in accordance with regulatory benchmarks supported by the Master Locksmiths Association of Australasia (MLAA).

Carbine PS4000 Entrance Knobset Cylinder Security

Unlike domestic hardware-store knobsets that rely on lightweight 5-pin zinc barrels, the 6-pin PD style brass cylinder inside this lockset provides commercial pick resistance and long-term wear durability. It is supplied standard with a 6-pin LW5 (C4 compatible) keyway and two nickel-plated brass keys.

Because the internal plug accepts standard Australian PD cylinder footprints (Silca LW5 / KeyLine LKW9 profile), trade locksmiths can rapidly re-pin the barrel to match an existing household key or swap in a restricted commercial master key cylinder. The deadlocking auxiliary plunger alongside the main 12mm stainless steel latch bolt blocks credit-card or shim attacks when the door closes against the strike plate.

Carbine 4000 Sandown Tiebolt Entrance Door Prep

Installing a Carbine 4000 Sandown tiebolt entrance lockset requires a standard 54mm face bore through the door face and a 25mm edge bore for the latch tube. Unlike residential clip-on locks that work loose under constant office traffic, two hardened steel tiebolts pass directly through the latch body inside the 54mm cavity.

Tightening the two internal machine screws draws the exterior rose plate and interior mounting plate together across the door thickness, clamping the chassis rigidly without crushing hollow-core or solid-core timber stiles. To switch the latch between a 60mm and 70mm backset during installation, simply slide the cam housing along the slotted latch case before inserting it into the 25mm door edge hole.

Commercial Entrance Knobset Australia Keying and Shipping

When specifying a dependable commercial entrance knobset Australia facility managers, builders, and homeowners can order this unit Either Keyed to Differ (KD) or custom Keyed Alike (KA) by our in-house trade locksmiths prior to dispatch. Selecting Keyed Alike allows multiple entrance doors, storerooms, and perimeter deadbolts across your property to operate on one single key.

Every order dispatches within 24-48 business hours from our stocked Victorian warehouse ($9.95 AUD flat-rate shipping on orders under $149.95 AUD, or free Australia-wide shipping on orders over $149.95 AUD) with full Australia Post tracking. Unmodified boxed items are backed by our 30-day Australian Consumer Law return policy. For on-site commercial installation or restricted master key systems across Metropolitan Melbourne and Regional Victoria, book All Secure Locksmiths.

Frequently Asked Technical Questions

Will the PS4000 tiebolt chassis fit a standard existing Australian door cutout?
Yes. The tiebolt housing retrofits standard 54mm cross-bore holes with a 25mm latch edge-bore hole and adjusts smoothly between 60mm and 70mm backsets on 35mm to 45mm thick hinged doors without extra drilling.

Does the inside knob always open the door during an emergency?
Yes. Turning the internal spherical knob retracts the 12mm stainless steel latch bolt at all times for single-action egress, even when the external knob is locked via the turnsnib or key.

Can I match this entrance function with passage, privacy, or classroom knobsets?
Yes. You can pair this entrance unit with matching 75mm rose PS4000 series passage, privacy, vestibule, and classroom functions across the same building for uniform architectural hardware.