



















ST503 Adjustable Standoff - Flat
Choose Quantity
The stand-off that started it all!
The ST504 was our original stand-off, created to offer just a minimum of space between face glass and mounting surface (11.6mm or ½” to be exact).
You’ll be steered to select this stand-off over our other ST503 (adjustable stand-off on this site) for any one of the following reasons:
you're looking to match an existing non-adjustable stand-off
you’ve got a tighter budget for parts and you’re sure that your mounting surface is even – you don’t need the adjustability features of our ST503
you have complete access for installation – this product doesn’t offer a front-mounting option
you have a space constraint between underside of glass to the mounting surface – this product offers the closer connection of all our stand-offs with just of 12.5mm [1/2”] between glass and mounting surface
When you order from Stella - you get the complete assembly.
This stand-off is supplied with all the components you need to install – fibre gaskets, ferrule bushing and your chosen attachment to affix this stand-off to your mounting surface.
We even supply this bracket with the specialized 4mm Pin Spanner tool you need to tighten the front face during install (see tools HERE)
NOTE: Pricing is for part as shown with no modifications.
More about product mount options:
See all product drawings, technical info and install guides here
Or a quick guide is below:
Concrete - Supplied M12 Stud @ 125mm [5"] Long (based on 21mm [7/8"] glass thickness)
Wood - Supplied M12 x 125mm [5"] long hanger bolt
Steel (comes with hex nut) - SHCS M12 @ 45mm Lg., Works for 0.5 to 12.7mm [3/8" to 1/2"] thick steel
Nutsert M12-12.7 for Thin-walled HSS - Works for 8.9 to 12.7mm [3/8" to 1/2"] thick steel & SHCS M12 @ 60mm Lg.
Suggested Applications
- Suggested ApplicationsWalls, guards, signage and canopies.
Key Dimensions
- Cap Face Diameter50mm [2"]
- Support BoltM12
- Distance between Glass & Mounting Surface11.6mm [approx. 1/2”]
- Is it Adjustable? (Distance between Glass & Mounting Surface)Yep! In/out adjustability of 6mm [1/4"]
- Glass Thickness12 to 21.5mm [1/2" to 7/8"]
- Max. Tested Loads & Other Key DimensionsRefer to product pdf
Recommended Diameter Hole In Glass
- Minimum22.2 mm [7/8”]
- Recommended25.4 mm [1”]
- Maximum28.6mm [1 1/8”]
Materials & Finish
- MaterialsStainless Steel Grade 316
- FinishBrushed - No.4 Satin
Extra Info
- What's a Nutsert & Why Choose It?Labour-saving alt to drilling/tapping on thin-walled HSS. Special tool forms "collar" to affix bolt.