50 × 33mm Five-Hole 8mm Cranked Flap Hinge

This compact five-hole cranked flap hinge measures 50 × 33mm overall and features an 8mm crank between its two differently sized leaves. The offset construction is suitable for furniture, cabinet flaps, folding panels and specialist joinery where the connected components cannot be positioned on the same flat plane.

The hinge comprises a 13mm narrow leaf with two fixing holes and a 35mm wide leaf with three fixing holes. Its five-hole arrangement provides multiple fixing points across the two mounting surfaces, while the 5mm knuckle forms the central pivot.

The product is manufactured from steel with a nickel-plated finish. It is supplied as a single hinge.

Final suitability depends on the panel construction, fixing position, required movement, selected screws and load placed on the hinge. No load rating, fixed opening stop or self-supporting action should be assumed unless confirmed by technical documentation.

Key features

• Compact cranked flap-hinge design
• 50 × 33mm overall size
• 8mm crank or offset
• 13mm narrow leaf
• 35mm wide leaf
• 5mm hinge knuckle
• Five fixing holes in total
• Two fixing holes on the narrow leaf
• Three fixing holes on the wide leaf
• Steel construction with nickel-plated finish
• Suitable for appropriate furniture, cabinet and joinery applications
• Supplied as a single hinge

Technical specifications

What does the 8mm crank mean?

The 8mm crank creates an offset between the two mounting leaves. This allows the hinge to connect components positioned on different planes rather than requiring both fixing surfaces to align flat with each other.

Confirm the required offset against the furniture or panel construction before drilling. An 8mm cranked hinge should not be substituted for a flat hinge without checking the resulting position and movement.

Five-hole fixing arrangement

The 13mm narrow leaf contains two fixing holes, while the 35mm wide leaf contains three. This gives five fixing positions across the complete hinge.

Fixing screws are not confirmed as included. Select screws appropriate for the substrate, fixing-hole size and expected load.

Typical applications

• Furniture flaps and folding panels
• Cabinet and cupboard components
• Desk and table components
• Lightweight access panels
• Furniture repair and restoration
• Specialist joinery requiring an 8mm offset

Suitability must be assessed for the particular installation. Do not describe this hinge as suitable for structural, security, fire-door, marine or exposed exterior applications without verified supporting information.

Installation guidance

1. Confirm that the required overall size is 50 × 33mm.
2. Check that an 8mm crank produces the required panel position.
3. Identify the correct mounting position for the 13mm and 35mm leaves.
4. Hold the hinge in place and test its complete movement.
5. Mark all five fixing-hole positions accurately.
6. Drill suitable pilot holes where required.
7. Use fixings appropriate for the substrate and expected load.
8. Test alignment and movement before final tightening.

Questions and answers

What size is the HI1209 hinge?

It measures 50 × 33mm overall.

How large are the two leaves?

The narrow leaf measures 13mm and the wide leaf measures 35mm.

What is the crank measurement?

The hinge has an 8mm crank or offset.

What size is the knuckle?

The central hinge knuckle measures 5mm.

How many fixing holes does it have?

It has five fixing holes: two on the 13mm leaf and three on the 35mm leaf.

Why is the hinge cranked?

The crank offsets the two mounting leaves so the hinge can connect surfaces positioned on different planes.

Does it lock open or support a flap?

No locking or self-supporting function has been confirmed. Use a suitable stay or support where the installation requires one.

Are fixing screws included?

Fixings are not confirmed as included. Select screws appropriate for the substrate and expected load.

Is it suitable for exterior use?

No exterior corrosion rating has been confirmed for this nickel-plated steel hinge. Check the intended environment before specifying.

Related hinges

Browse our cabinet hinge collection and cabinet hardware hinges for related products.