Interlock 300 4BC Stainless Steel Casement Friction Stay – P1120
The Interlock 300 4BC is a 4-bar stainless steel friction hinge designed for projecting side hung (PSH) casement window sashes.
Manufactured from 304 grade austenitic (non-magnetic) stainless steel, the 4BC Series provides reliable support and frictional control for aluminium, timber or uPVC side-hung window applications in residential and light commercial environments.
This product is a friction stay hinge only. Window operators, restrictors and fixings are not included.
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Key Features
- 4-bar friction hinge construction.
- Designed for projecting side hung (PSH) casement windows.
- Manufactured from 304 grade austenitic stainless steel.
- Non-magnetic corrosion resistant material.
- No sliding channels.
- Unique “pull-in” feature.
- Factory set friction level – no on-site adjustment required.
- New Zealand made.
- Supplied as a pair.
Full Specifications
Dimensions
All dimensions shown are in millimetres. Letters correspond to the manufacturer’s A–N dimension table for the 430 4BC stainless steel casement hinge.
Frequently Asked Questions
Is this suitable for top hung windows?
No. The 4BC Series is designed for projecting side hung (PSH) windows only.
What sash width can this hinge support?
Maximum sash width is 750mm.
Is friction adjustable?
No. Friction levels are factory set and not adjustable on site.
Are non-friction versions available?
Yes. NF variants are available for use with window control mechanisms.
Additional Information
- Select hinge size based on sash width and weight.
- Recommended where window height is approximately twice window width.
- No fire rating stated in manufacturer documentation.
Interlock Projected Window Hardware Catalogue
ASSA ABLOY Manufacturer Warranty
Covered under official ASSA ABLOY warranty terms.
View full warranty details.
ASSA ABLOY Warranty Overview
ASSA ABLOY branded products sold in Australia are covered by manufacturer warranties issued by ASSA ABLOY Australia Pty Ltd. Warranty coverage varies depending on mechanical components, electronic components, cylinders and finish categories.
This overview summarises the structure of ASSA ABLOY warranty coverage. Full terms, exclusions and claim procedures are set out in the official ASSA ABLOY Warranty document.
Warranty Periods Summary
Finish & Material Notes
- Stainless steel does not mean stain-free. Tea staining is not covered where cleaning and maintenance guidelines have not been followed.
- Cosmetic, decorative and appearance damage is not covered.
- Battery failure or battery leakage damage is not covered.
What the Warranty Covers
- Defects in material and workmanship within the applicable period.
- Assessment by ASSA ABLOY to determine repair, replacement with the same or closest equivalent product, or refund of purchase price.
- Remedy determined at ASSA ABLOY’s discretion.
Common Exclusions
- Normal wear and tear.
- Misuse, abuse or installation outside published technical specifications.
- Improper maintenance or neglect.
- Unauthorised modification or repair.
- Use of non-genuine ASSA ABLOY parts or substitute components.
- Exposure to corrosive environments including coastal air, salt spray, chemicals, contamination or high humidity.
- Removal, refitment, freight or labour charges.
- Second-hand or imported products not sold through authorised Australian channels.
Warranty Claim Process
- Retain proof of original purchase.
- Return the product to the original authorised retailer where applicable.
- If claiming directly, obtain a case number before returning goods.
- Securely package returned goods and clearly reference the case number.
- Warranty assessment determines repair, replacement or refund.
Australian Consumer Law
ASSA ABLOY 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.
