1/4" A36 Steel Triangle Gusset Plate – Select Size

1/4" Steel Triangle Gusset Plates – Precision Cut & Ready to Weld

Our 1/4" thick steel triangle gusset plates are precision CNC plasma cut from premium ASTM A36 low carbon steel to provide superior reinforcement for welded joints, frames, and structural applications. Available in sizes from 4" to 30", these heavy-duty gusset plates are built for demanding fabrication, trailer manufacturing, agricultural equipment, machinery repairs, and custom steel projects.

Each gusset plate is accurately cut with clean, weld-ready edges to help reduce fabrication time while delivering consistent, professional results.

Whether you're strengthening a trailer frame, repairing equipment, or building a custom project, our 1/4" gusset plates provide the strength and durability you need.

Features

• Premium ASTM A36 Low Carbon Steel
• 1/4" (0.250") Thick
• Equal Leg Triangle Design
• Sizes Available from 4" to 30"
• Precision CNC Plasma Cut
• Clean, Weld-Ready Edges
• Raw Mill Finish
• Excellent Weldability
• Made in the USA
• Free Shipping
• Ships in 1–5 Business Days

Specifications

Material: ASTM A36 Low Carbon Steel

Thickness: 1/4" (0.250")

Shape: Equal Leg Triangle

Available Sizes: 4"–30"

Manufacturing Process: CNC Plasma Cut

Tolerance: ±0.025"

Finish: Raw Mill Finish

Country of Origin: USA

Common Uses

• Trailer Frames
• Structural Reinforcement
• Welding Projects
• Equipment Repair
• Agricultural Equipment
• Machine Frames
• Bracing
• Off-Road Fabrication
• Metal Fabrication
• Custom Steel Projects

Why Buy From JWM Metal Supply?

• Precision Cut in Kansas
• Premium American Steel
• No Minimum Order
• Fast Turnaround
• Free Shipping
• Ships in 1–5 Business Days
• Bulk Pricing Available
• Family-Owned Fabrication Shop

Frequently Asked Questions

Are these gusset plates weldable?

Yes. ASTM A36 low carbon steel offers excellent weldability using MIG, TIG, or Stick welding.

Do the edges require grinding before welding?

Most applications can be welded as received. Light cleanup may be performed if desired for your specific project.

Can I order large quantities?

Absolutely! Contact us for bulk pricing on production orders.

What finish do they have?

These gusset plates are supplied with a raw mill finish.