Lockwood 4772NOHDSS — MkII Universal Primary Lock, Heavy Duty Hub Spring, No Hub Disc, 89 mm Backset Satin Stainless
The Lockwood 4772NOHDSS is a Selector® 4772 MkII universal primary mortice lock featuring a heavy-duty hub spring and no hub disc configuration. With an 89 mm backset and finished in Satin Stainless Steel (SS), this lock is engineered for high-traffic commercial and institutional doors requiring long service life, fire-rated compliance, and versatile function selection. It is compatible with the full range of Lockwood 570 oval cylinders and associated furniture.
Estimated Warehouse Dispatch: 11 Days
Non-Returnable Item: This product cannot be returned once purchased
Key Features
- Universal primary mortice lock body — Selector® MkII platform.
- 89 mm backset for extended door prep requirements.
- No hub disc configuration with heavy-duty hub spring for enhanced longevity.
- Satin Stainless Steel faceplate provides strength and modern appearance.
- Compatible with Lockwood 570 oval cylinders, restricted and master key systems.
- In-door function selector (red/green switch under faceplate) for simple adjustments.
- Retrofit compatible with earlier Synergy® mortice lock case sizes.
Fire Rated
- Tested up to 4 hours on fire door assemblies (AS 1905.1:2005).
Specifications
- Item Code: 4772NOHDSS
- Function: Universal primary mortice lock body (MkII, no hub disc, heavy-duty spring).
- Backset: 89 mm.
- Hub: Heavy-duty hub spring, no hub disc configuration.
- Finish: Satin Stainless Steel (SS).
- Door Thickness: 32–50 mm standard; extension kits available to 200 mm.
- Bolt: 15 mm stainless steel latch with auxiliary deadlatch.
- Case: Zinc alloy with stainless steel chassis.
- Handing: Reversible without case disassembly.
- Compliance: AS4145.2 (Durability D8, Security S7); AS1905.1 (Fire Doors).
What's In The Box
- 1 × Lockwood 4772NOHDSS mortice lock body (89 mm backset)
- 1 × Satin Stainless Steel faceplate
- 1 × Satin Stainless Steel strike plate
- Fixing screws
- Installation instructions
Suitable Uses
- High-traffic commercial and institutional buildings requiring extended 89 mm backset.
- Applications where heavy-duty hub spring is necessary for increased service life.
- Fire-rated door installations needing tested and certified mortice hardware.
- Retrofit upgrades from earlier Synergy® lock bodies to Selector® MkII platform.
Selector® 4772 MkII Escape Locks — Item Code Family (89 mm Backset)
Selector® 4772 MkII — Accessories & Spares
Warranty
- Lockwood 25 Year Mechanical Warranty covers mechanical components and workmanship under normal use and correct installation.
- Electronic and electrical components are covered for 3 years (PADDE & electric mortice locks 5 years, batteries excluded).
- Keys are covered for 12 months.
- Finish warranty varies by finish type and exposure — e.g. Everbrass 25 years; Stainless/Chrome/Anodised 10 years; PVD/VIVID 10 years; Symmetry range 5 years; decorative finishes such as bronze, antique and powdercoat 2 years (natural brass ageing excluded).
- Warranty excludes misuse, improper installation, modification, or failure to maintain as specified.
Download PDF Resources
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Lockwood Selector 3700 Series Mortice Locks Catalogue |
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Lockwood Selector 3700 Series Mortice Locks Service Manual |
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Lockwood 25 Year Mechanical Warranty (Conditions Apply) |
Lockwood Warranty Overview
Lockwood branded products are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty periods vary depending on product type, mechanical components, electrical elements, and finish category.
This overview summarises the structure of Lockwood warranty coverage. Full terms, exclusions and claim procedures are set out in the official Lockwood Warranty document.
Warranty Periods Summary
Finish Coverage Guide
- Everbrass finishes: up to 25 years against corrosion, tarnishing and discolouration.
- Stainless steel, polished stainless steel, chrome plating and anodised finishes: typically up to 10 years.
- Decorative finishes including Antique Copper, Architectural Bronze, Oil Rubbed Bronze, Aged Brass, Polished Brass, Satin Brass and related variants: typically up to 2 years against corrosion.
- Unlacquered brass finishes will naturally age and change appearance over time. This is not considered a defect.
- Tea staining of stainless steel is not covered where cleaning and maintenance have not been followed.
What the Warranty Covers
- Defects in material and workmanship during the applicable warranty period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
Common Exclusions
- Normal wear and tear.
- Misuse, abuse, accidental damage or use outside published specifications.
- Improper maintenance or failure to follow care instructions.
- Unauthorised modification, repair or use of non-genuine parts.
- Exposure to corrosive environments including coastal air, salt spray, chemicals or pollution.
- Removal, refitment or associated labour charges.
- Products not originally sold in Australia through authorised channels.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product through the original place of purchase where applicable.
- If claiming directly, obtain a case number before returning goods.
- Products must be securely packed and clearly identified.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
Lockwood warranties operate in addition to rights available under the Australian Consumer Law. Goods come with guarantees that cannot be excluded. Customers may be entitled to a replacement or refund for a major failure and compensation for reasonably foreseeable loss or damage.
Where a product fails to meet acceptable quality standards and the failure does not amount to a major failure, the customer is entitled to repair or replacement.
