What is a satin chrome cranked surface bolt?

A satin chrome cranked surface bolt is a surface-mounted sliding bolt with an offset (cranked/necked) shape. The offset allows the bolt to line up with the keep on doors or windows where the frame is stepped back or uneven.

When should I choose a cranked (offset) bolt instead of a straight bolt?

Choose a cranked or offset surface bolt when a straight bolt would miss the keep due to an offset frame, rebated door, or uneven alignment. The cranked neck helps the bolt reach the keep reliably.

What sizes do satin chrome cranked surface bolts come in?

Common sizes include 100mm (4 inch), 150mm (6 inch), and 200mm (8 inch). The best length depends on the application and the level of hold you need.

Are cranked surface bolts suitable for external doors?

They can be used as a supplementary fastening, but they are not typically a replacement for a primary external door lock. For higher security on external doors, use an appropriate lockset and consider additional security hardware.

Do satin chrome bolts show fingerprints?

Satin chrome has a brushed, softer sheen that generally hides fingerprints and smudges better than polished chrome, making it a practical finish for everyday use.

Satin Chrome Cranked Surface Bolts

Satin Chrome Offset Surface Bolts for Doors & Windows

Upgrade everyday security with our satin chrome cranked surface bolts – a smart choice for offset frames where a standard straight bolt won’t line up cleanly with the keep. The cranked (also called necked) design provides reliable closing and a tidy, modern finish for homes and light commercial settings across the UK.

What makes a “cranked” (offset) surface bolt different?

A cranked surface bolt has an angled neck so the sliding barrel reaches the keep even when the door or window frame sits back or is uneven. That makes these ideal for traditional timber frames, stable doors, internal doors, cupboards, and certain window setups where alignment is awkward.

Pros and cons of satin chrome cranked surface bolts

Pros: Great for offset/stepped frames, quick to fit (surface-mounted), neat modern look, subtle sheen that helps reduce the appearance of fingerprints.
Cons: Not a replacement for a primary lock on external doors; sizing and keep position must be chosen carefully for best alignment and throw.

Finish benefits: modern, practical, easy to match

The brushed satin chrome finish suits contemporary interiors and pairs well with satin chrome handles, hinges, and bathroom accessories. It’s a popular choice when you want a clean look without the high shine of polished finishes.

Popular sizes and common applications

These bolts are commonly supplied in 100mm (4"), 150mm (6"), and 200mm (8") lengths. They’re a practical option for securing:

Internal doors (privacy / holding doors shut)
Stable doors and secondary leaves
Wooden windows and frames with a step/offset
Cupboards, cabinets and storage doors

Fitting tips for better performance

For best results, check the offset distance before fixing the keep. Aim for smooth bolt travel with no binding, and use suitable fixings for timber or masonry (where applicable). If you’re unsure which length or offset suits your frame, we can help you choose.

Need something different? View all our window and door bolts .

Still deciding? Contact us and we’ll help you match the right satin chrome cranked surface bolt to your door or window.