ABB - Installation Products AB257HDGC - Flat Plate Corner Bracket. 4 Hole, 9/16 Inch Diameter. 3-1/2 Inch X 5-3/8 Inch. Thickness 1/4 Inch. Zinc coating is applied by hot-dipping after fabrication. Is in conformance with ASTM A-123, Grade 65 specification standards. Minimum of 2.5 mill thickness.
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ABB - Installation Products

AB257HDGC

UPC: 786210564043


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Multiplier: 20

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Overview

The ABB Flat Plate Corner Bracket (SKU: AB257HDGC) from ABB Installation Products is a high-strength, corrosion-resistant solution engineered for demanding industrial and structural applications. Designed with a robust 1/4" thick steel plate measuring 3-1/2" x 5-3/8", this bracket delivers exceptional load-bearing capacity and dimensional stability for critical installations. The 4-hole configuration features 9/16" diameter holes with 13/16" center-to-edge spacing and 1-7/8" hole centers, ensuring precise alignment and secure fastening in strut and framing systems. Hot-dipped zinc coating applied post-fabrication provides superior corrosion resistance, meeting ASTM A-123 Grade 65 specifications with a minimum 2.5 mil thickness. This premium finish ensures long-term durability in harsh environments, including outdoor installations, industrial facilities, and corrosive atmospheres. The bracket's compliance with industry standards makes it ideal for heavy-duty applications such as electrical enclosures, HVAC systems, machinery mounting, and structural frameworks. Key benefits include: - **High Load Capacity**: 1/4" thick steel construction supports heavy structural loads and dynamic forces. - **Corrosion Protection**: Hot-dipped zinc coating resists rust and extends service life in exposed environments. - **Precision Engineering**: 9/16" diameter holes with standardized spacing enable seamless integration with strut systems and framing components. - **Versatile Applications**: Suitable for corner connections, bracing, and mounting in industrial, commercial, and infrastructure projects. - **Reliable Performance**: Manufactured to ASTM A-123 Grade 65 standards, ensuring consistent quality and compliance with industry requirements.
  • 4-hole design with 9/16" diameter holes for secure fastening
  • 1/4" thick steel plate for high load-bearing capacity
  • Hot-dipped zinc coating for superior corrosion resistance (ASTM A-123 Grade 65)
  • Dimensions: 3-1/2" x 5-3/8" for versatile structural applications
  • Ideal for corner connections, bracing, and mounting in industrial environments

Specifications

Application
Load ratings vary depending fittings and brackets are used with 12, 14 or 16 gauge channel
Finish
Hot-Dip Galvanized
Material
Steel
Special Features
Unless otherwise noted, nuts and bolts for use with fittings and brackets should be ordered separately
Type
Fittings and Brackets
Package Dimensions (L x W x H)
0.01 IN x 0.01 IN x 0.01 IN
Package Dimensions (L x W x H)
0.0254 cm x 0.0254 cm x 0.0254 cm
Package Weight (Imperial)
1.050 L
Package Weight (Metric)
0.476 kg
90 degree Steel Corner Connection with Hot-Dip Galvanized finish. (Left)

AB284LHDG

90 degree Steel Corner Connection with Hot-Dip Galvanized finish. (Left)
LIFTING PLATES E2.2-E6.2

ZEA26LPL

LIFTING PLATES E2.2-E6.2
A straight flat plate fitting with 3 mounting holes. It is made of steel with an electro-galvanized finish. The plate has 9/16 in. mounting hole spacing and 1/4 in. thickness.

SP3HEG

A straight flat plate fitting with 3 mounting holes. It is made of steel with an electro-galvanized finish. The plate has 9/16 in. mounting hole spacing and 1/4 in. thickness.
ADAPTER PLATE WEG445/7-447/9-REL

WEG445/7-447/9-REL

ADAPTER PLATE WEG445/7-447/9-REL
Plate, Five Hole Corner, Length 5-3/8 Inches, Width 5-3/8 Inches, Hole Diameter 9/16 Inch, Electro-Galvanized Steel

AB263-EG

Plate, Five Hole Corner, Length 5-3/8 Inches, Width 5-3/8 Inches, Hole Diameter 9/16 Inch, Electro-Galvanized Steel
Plate, Tee, Height 3-1/2 Inches, Length 5-3/8 Inches, Width 1-5/8 Inches, Hole Diameter 9/16 Inches, Type 316 Stainless Steel

AB220SS6C

Plate, Tee, Height 3-1/2 Inches, Length 5-3/8 Inches, Width 1-5/8 Inches, Hole Diameter 9/16 Inches, Type 316 Stainless Steel
Plate, Four Hole Tee, Length 5-3/8 Inches, Width 3-1/2 Inches, Hole Diameter 9/16 Inch, Hot-Dip Galvanized Steel

AB265HDGC

Plate, Four Hole Tee, Length 5-3/8 Inches, Width 3-1/2 Inches, Hole Diameter 9/16 Inch, Hot-Dip Galvanized Steel
90 degree Steel Corner Connection with Hot-Dip Galvanized finish. (Right)

AB284RHDG

90 degree Steel Corner Connection with Hot-Dip Galvanized finish. (Right)

Frequently Asked Questions about ABB - Installation Products

How are Thomas and Betts products typically installed?

Thomas and Betts products are installed using a variety of methods tailored to specific applications, including the use of flexible cords and cable fittings, non-metallic cable glands, and armored cable fittings. Proper selection of fittings is crucial to match the cable type and installation environment, ensuring durability and preventing physical damage. Tools such as the Blackburn® Comfort Crimp® and HEX-FLEX® systems enhance installation efficiency and reliability, reducing labor time and ensuring secure connections.

What accessories are available for Thomas and Betts products?

Thomas and Betts offers a comprehensive range of accessories for their products, including various cord and cable fittings, non-metallic cable glands, service entrance cable fittings, and armored cable fittings. Their accessories are designed to enhance installation efficiency and ensure compatibility with different cable types and environmental conditions, providing reliable connections for a wide array of applications.

What environmental ratings do Thomas and Betts products have?

Thomas and Betts products feature robust environmental ratings, including NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications, as well as IEC 60529 IP66 protection. These ratings ensure that their products are designed to withstand harsh industrial environments, with capabilities to resist dust, water, and corrosion, and operate effectively in a wide temperature range.

What communication protocols do Thomas and Betts products support?

Thomas and Betts products support a wide range of industrial communication protocols, including Ethernet, DeviceNet, PROFIBUS, Modbus, CANopen, and others. This extensive compatibility ensures seamless integration and reliable communication across various industrial automation systems, catering to diverse application needs.

What are the key features of Thomas and Betts products?

Thomas and Betts products are known for their innovative designs, high performance, and compliance with industry standards such as the National Electrical Code and Underwriters' Laboratories. They offer a comprehensive range of rugged and reliable electrical fittings, including liquidtight and dust-tight connections, which enhance installation efficiency and reduce overall project costs. Their products are engineered for durability in harsh environments, ensuring long-term reliability and lower installed costs.

What are the main product lines offered by Thomas and Betts?

Thomas and Betts offers a comprehensive range of product lines including electrical connectors, cable management systems, grounding and bonding solutions, and industrial automation components. Their products are designed for durability and reliability in demanding industrial environments, ensuring optimal performance and safety across various applications.

What technical support does Thomas and Betts offer?

Thomas and Betts offers comprehensive technical support, including access to field application engineers for onsite training and installation assistance. Their technical support staff is available to address inquiries related to product specifications and installation practices, ensuring optimal performance and safety of electrical systems. Additionally, they provide a variety of training programs to enhance the knowledge and skills of users in the field.

What industries and applications are Thomas and Betts products used for?

Thomas and Betts products are utilized across various industries including electrical construction, industrial automation, telecommunications, and utilities. Their extensive range of cord and cable fittings, electrical boxes, and metal framing systems are designed for applications that require durability and reliability in harsh environments, ensuring optimal performance in both permanent and temporary installations.

What certifications and standards do Thomas and Betts products comply with?

Thomas and Betts products comply with critical international certifications including UL (Underwriters Laboratories), CSA (Canadian Standards Association), and CE (European Community). Our products are designed to meet rigorous industrial standards such as NEMA enclosure ratings and IEC 60529 IP ratings, ensuring safety and reliability across various industrial applications.

What are the main product lines offered by Ocal?

Ocal offers a comprehensive range of corrosion-resistant conduit systems, including PVC-coated conduit and fittings, conduit bodies, hazardous location fittings, and strut accessories. Their products are designed to provide superior corrosion protection, featuring a hot-dipped galvanizing process and UL listed Type 4X PVC-coated conduit bodies, ensuring durability in the most demanding environments.