ABB - Installation Products STG1-G - PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat, Pipe Size 1/2 Inch/16 Metric, Overall Diameter 1.44 Inch/36.58 Millimeters, Maximum Panel Thickness 0.19 Inch/4.83 Millimeters, Throat Diameter 0.59 Inch/14.99 Millimeters, Nitrile Rubber (Buna-N) Sealing Ring, Dark Gray
ABB - Installation Products

STG1-G

UPC: 704508408732


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Overview

The ABB STG1-G PVC Coated Zinc Grounded Hub with Thermoplastic Insulated Throat is a precision-engineered grounding component designed for industrial electrical safety and corrosion resistance. This hub features a 1/2-inch pipe size with a maximum panel thickness of 0.19 inches (4.83 mm) and an overall diameter of 1.44 inches (36.58 mm). The throat diameter measures 0.59 inches (14.99 mm), ensuring compatibility with standard conduit systems. Constructed from zinc-coated steel with a nominal 0.040-inch (40 mil) PVC coating bonded to the exterior, the STG1-G delivers superior corrosion protection in harsh environments. The thermoplastic insulated throat is rated for 105°C and meets UL94-V0 flammability standards, providing reliable insulation and thermal stability. A nitrile rubber (Buna-N) sealing ring, captive in a precision-machined groove, ensures a 360° leak-proof seal—even when conduit alignment is imperfect. The hexagonal/splined body and locknut design enable fast, tool-assisted installation with a wrench or hammer and screwdriver. The locknut features peripheral slots and angled splines spaced every 30°, allowing torque application without slippage. Sharper, deeper teeth on both the hub and locknut improve bonding to the enclosure, enhancing electrical continuity and grounding performance. Certified to NEMA 3R, 4, and 13 enclosure standards, the STG1-G is UL Listed and CSA Certified, including hazardous location ratings for Class II Groups E, F, G and Class III. The dark gray finish provides a professional appearance while blending with industrial infrastructure. Ideal for electrical, HVAC, and plumbing applications, this hub ensures dependable performance in new construction or retrofit projects where reliable grounding and corrosion resistance are critical.
  • 1/2" pipe size with 0.59" throat diameter for standard conduit compatibility
  • Zinc-coated steel with 0.040" (40 mil) PVC coating for superior corrosion resistance
  • Thermoplastic insulated throat rated 105°C, UL94-V0 flammability compliant
  • Nitrile rubber (Buna-N) sealing ring provides 360° leak-proof seal in any alignment
  • Hexagonal/splined body and locknut enable fast, tool-assisted installation
  • Sharper, deeper teeth on hub and locknut improve electrical bonding to enclosures
  • NEMA 3R, 4, and 13 certified; UL Listed and CSA Certified for hazardous locations
  • Dark gray finish for professional appearance and durability in industrial environments

Specifications

Application
To positively bond conduit to box or enclosure
Color
Dark Gray
Color
Gray
Material
PVC Coated Zinc
Size
1/2 Inch/16mm
Special Features
Hexagonal/Splined Body and Locknut Enables Fast and Easy Installation
Temperature Rating
105 C
Temperature Rating, Maximum
221 F
Temperature Rating, Maximum
105 C
Temperature Rating, Minimum
221 F
Temperature Rating, Minimum
105 C
Type
Grounded Hub Connector
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)
0.200 L
Package Weight (Metric)
0.091 kg
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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.

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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.