Interlock 500 4B Stainless Steel Friction Stay – P1004
The Interlock 500 4B is part of the 4B Series premium stainless steel friction hinge range designed for projected top hung (PTH) window sashes.
Manufactured from 304 grade austenitic (non-magnetic) stainless steel, this hinge provides support and controlled frictional operation for larger residential and light commercial sashes.
This model is designated by its frame plate length and is selected based on sash height and weight. The 500 4B is rated for heavier applications within the 4B stainless range.
This product is a friction stay hinge only. Window control mechanisms, restrictors and fixings are not included.
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Key Features
- 4-bar friction hinge construction.
- Manufactured from 304 grade austenitic stainless steel.
- Non-magnetic corrosion resistant material.
- No sliding channels.
- Unique “pull-in” feature for controlled sash closing.
- Factory set friction level – no on-site adjustment required.
- Fixed directly through bearing eyelet and formed screw/rivet holes.
- New Zealand made.
- Designed for residential and light commercial PTH windows.
- Supplied as a pair.
Full Specifications
Item Code Family – 4B Series Stainless Hinges
Frequently Asked Questions
Is this suitable for side-hung windows?
No. The 4B Series is designed for projected top hung (PTH) windows.
What sash weight can P1004 support?
Maximum sash weight is 30kg.
Is friction adjustable?
No. Friction levels are factory set.
Are non-friction versions available?
Yes. Non-friction variants are available where window control mechanisms are used.
Additional Information
- Select hinge size based on sash height and weight.
- For lighter sashes, refer to 200 4B or 350 4B models.
- For windows requiring control arms, specify the non-friction (NF) variant.
- No fire rating or corrosion testing beyond material grade stated in the catalogue.
Dimensions
All dimensions shown are in millimetres. Letters correspond to the manufacturer’s dimension table for the 350 4B stainless steel friction hinge.
Interlock Projected Window Hardware Catalogue
ASSA ABLOY Manufacturer Warranty
Covered under official ASSA ABLOY warranty terms.
View full warranty details.
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.
