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What are strut fittings?

Fittings are the next essential part of the strut system. They provide the necessary connections to build racking, pipe supports, electrical grids and many other support applications. The majority of strut fittings are punched with a 9/16” hole to accommodate ½” threaded hardware.

Types of strut fittings include:

• Square washers

• Flat plate fittings

• Swivel plate fittings

• Angle plates

• T-shaped plates

• Cross plates

• Corner plates

• Gusset flat plates

• 90-degree angle fittings

• Z-shaped fittings

• U-shaped fittings

• Splice fittings

• Open angles

• Closed angles

• 2-Side angles

• 3-Side angles

• Corner angles

Fittings Specifications



ASTM Description

Hot Rolled Plate

A 575

Steel, sheet and strip, carbon drawing quality, special killed, hot rolled.

Fitting (Steel)

A 366

Steel carbon, cold rolled sheet, commercial quality structural steel

A 366

A 36

Strip Steel: Pipe Clamps

A 569

Steel, sheet and strip, carbon drawing quality special killed, hot rolled.

Stainless Steel:

(ST304 or ST316)


TYPE 304

Heat resisting chromium and chromium -nickel stainless steel plate, sheet, strip for pressure vessel.

A 240

TYPE 316

Aluminum: (AL)

B 221

Aluminum alloy extruder bar, rod, wire, shape and tube.

Fitting Finish Specifications


Finish Code


Paint-Green Coating


A dark green low gloss coating is applied and thoroughly baked after steel has been cleaned and phosphatized.



Wesanco fittings and hardware supplied as “Electro-Galvanized” in accordance with ASTM B 633.




Galvanized steel used in the manufacture of Wesanco channel sections conforms to ASTM A 653 GR33 G90. Uncoated edges resulted from slitting, punching and channel are present.

Hot Dip Galvanized After Fabrication



Wesanco channel and fittings which are hot dip galvanized after fabrication conform to one to the following specifications. ASTM A 123, ASTM A153 or ASTM A 386

Special Coatings



Other commercially available finished can be supplied per specification when required to protect applications.