75mm Cranked Steel Backflap Hinges – Self Colour

These 75mm cranked backflap hinges provide a practical surface-mounted fixing for gates, shed doors and substantial timber joinery. The cranked profile offsets the hinge leaves, helping adjoining surfaces sit in the required position when a conventional flat backflap hinge would not provide suitable alignment.

Manufactured from steel in a self-colour finish, the hinges are supplied without a decorative or protective plated coating. Each hinge measures 156 x 75mm when open and 88 x 75mm when closed. They can be painted or otherwise protected on site to suit the project and intended environment. This listing contains one pair of hinges.

Key Features

• Cranked backflap hinge design
• Steel construction
• Self-colour untreated finish
• Open dimensions: 156 x 75mm
• Closed dimensions: 88 x 75mm
• Suitable for painting or protective treatment on site
• Surface-mounted installation
• Pre-drilled leaves for screw fixing
• Suitable for gates, sheds and substantial timber joinery
• 75mm size
• Supplied as one pair

Product Specifications

Why Choose a Cranked Backflap Hinge?

The offset formed by the cranked leaves changes the position of adjoining components compared with a standard flat hinge. This can help achieve the required alignment on gates, doors and lids. The broad leaves mount directly onto the surface, avoiding the need to cut a traditional hinge recess.

About the Self-Colour Finish

Self-colour steel is supplied in its natural unfinished condition. Colour, texture and minor surface markings may vary. Apply a suitable paint or protective coating before installation when additional appearance or environmental protection is required.

Installation Guidance

1. Check that the cranked profile provides the required offset.
2. Prepare or protect the self-colour steel as required for the installation.
3. Position the hinges and mark the fixing-hole locations accurately.
4. Drill suitable pilot holes and secure using appropriate screws.
5. Check alignment and free movement before fully tightening every fixing.

Fixing screws are not stated as included. Select screws suitable for the substrate, fixing-hole size and intended environment.

Frequently Asked Questions

How many hinges are supplied?

This listing contains one pair, which is two hinges.

What size are the hinges?

Each hinge measures 156 x 75mm when open and 88 x 75mm when closed. The nominal size is 75mm.

What does cranked mean?

A cranked hinge has an offset formed into its leaves. This changes the position of the adjoining surfaces compared with a standard flat backflap hinge.

What does self colour mean?

Self colour means the steel is supplied without a decorative plated coating. It may show natural variation and should be painted or otherwise protected when required.

Does this hinge need to be recessed?

No. Backflap hinges are normally surface mounted and do not require a traditional hinge recess.

Where can these hinges be used?

They are suitable for gates, shed doors and substantial timber joinery where a 75mm cranked surface-mounted hinge is required.

Are fixing screws included?

Fixing screws are not stated as included. Choose screws suited to the substrate and intended application.

Can untreated self-colour steel be left outdoors?

Untreated steel can develop surface corrosion. Apply a suitable protective finish and maintain it according to the installation environment.

Compare other sizes and finishes in our backflap hinge collection, or browse the complete special hinges range.