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4-Hole Open 45° Strut Corner Angle
4-Hole Open 45° Strut Corner Angle
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4-Hole Open 45° Strut Corner Angle
Build substantial angled connections with two mounting points on each side of the joint. This heavy formed-steel fitting creates an open 45-degree transition for diagonal braces, sloped supports and larger strut-channel structures.
The longer legs and four-hole design provide more attachment area than a compact two-hole fitting. Made from 1/4″ thick steel with a Hot Dip Galvanized finish, it is ready for demanding indoor or outdoor installations.
Why You’ll Love It
- Four-point attachment — two mounting holes on each formed leg
- Longer connection area — ideal for larger braces, frames and supports
- Heavy 1/4″ steel — a substantial fitting for dependable assemblies
- Indoor or outdoor versatility — Hot Dip Galvanized for durable corrosion protection
Choose this 4-hole angle when you want longer legs, two fasteners on each side of the joint and a more substantial connection across the completed assembly.
For lighter structures or locations where mounting space is limited, our compact 2-hole open 45° angle provides the same angled configuration with one mounting point on each leg.
More Attachment for Angled Supports
The formed shape provides two long mounting surfaces set at an open angle. Two holes secure the base leg, while two more connect the inclined leg to the adjoining channel, bracket or mounting surface.
This four-point layout helps maintain alignment across the angled joint and distributes the connection across a larger area. It is a practical choice for diagonal braces, sloped frames and supports where a compact two-hole fitting does not provide enough attachment length.
Durability for Any Installation
Hot dip galvanizing surrounds the fabricated steel fitting with a heavy, bonded zinc coating. This provides excellent protection against moisture and corrosion while preserving the strength of the underlying 1/4″ steel.
It is an excellent choice for outdoor equipment and exposed structures, but it is equally useful in workshops, equipment rooms, warehouses and utility spaces where long service life and minimal maintenance are priorities.
Specifications
| Product Type | Formed strut corner angle |
| Angle | Open 45-degree configuration |
| Dimensions | 3-1/2″ L × 1-5/8″ W × 3-11/16″ H (88.9 × 41.3 × 93.7 mm) |
| Steel Thickness | 1/4″ (6.35 mm) |
| Hole Diameter | 9/16″ (14.3 mm) |
| Recommended Fastener Size | 3/8″ or 1/2″ |
| Material | Carbon steel |
| Finish | Hot Dip Galvanized |
| Product Weight | 0.76 lb (345 g) |
Suggested Uses
- Diagonal braces and frame reinforcement
- Sloped strut-channel supports
- Solar and electrical equipment structures
- Pipe, conduit and cable-support systems
- Workshop, warehouse and utility installations
Frequently Asked
What does “open 45°” mean?
It describes the formed angle of the fitting and the directional change it creates between the connected components. Rather than making a square 90-degree corner, it provides an open angled connection for braces, sloped supports and similar structures.
Why choose the 4-hole version?
The four-hole angle has longer mounting legs and provides two attachment points on each side of the joint. This gives you more connection area and makes it a good choice for larger frames, braces and supports.
The compact two-hole version is a great option when space is limited or the additional mounting length is not needed.
When should I use this instead of a 90° corner angle?
Choose this fitting when one section of channel or support needs to run diagonally or at an open angle from the other. It is useful for braces, sloped frames and supports that transition gradually between mounting points.
Choose a 90° corner angle when the two channels or mounting surfaces are perpendicular and you need a square right-angle connection.
Can I use this angle indoors?
Absolutely. It is well suited to workshops, equipment rooms, warehouses and indoor utility structures. The Hot Dip Galvanized coating also adds protection in locations that may experience humidity, condensation or occasional moisture.
Is it suitable for outdoor installations?
Yes. The Hot Dip Galvanized finish provides durable corrosion protection for outdoor, damp and exposed installations. For the best complete assembly, use channel, strut nuts, bolts and adjoining fittings selected for the same environment.
Do I need washers when installing the angle?
Yes. This fitting works best with 3/8″ or 1/2″ bolts installed using heavy-duty flat washers. The washers provide a broad bearing surface beneath the bolt heads, distribute clamping force across the fitting and properly cover the 9/16″ mounting holes.
Washers are especially important when using 3/8″ bolts because of the additional clearance around the smaller fastener. Select the bolt length and other hardware to suit your strut channel, spring nuts and completed assembly.
Should I use all four mounting holes?
Yes. The angle is designed to be secured at all four mounting points, with two fasteners on each leg. Using every hole provides the intended alignment and distributes the connection across the full fitting.
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