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NSI Industries 144 - Locknut, Sealing, Steel / PVC, Size 1 1/4 Inch
NSI Industries

144

UPC: 781747001443


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Minimum Qty: 25

Multiplier: 25

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Overview

The NSi Industries Locknut, SKU 144, is a high-performance sealing fastener designed for demanding industrial piping applications. Measuring 1 1/4 inches, this locknut combines a robust steel core with a durable PVC sealing element to provide superior corrosion resistance and reliable sealing under pressure. Its tight‑torque design ensures the nut remains securely fastened, even in vibration‑prone environments, reducing the risk of leaks or pipe disconnections. Installation is straightforward, as the locknut is compatible with standard threading tools and readily available in most industrial supply catalogs. Whether used in water treatment plants, chemical processing facilities, or HVAC systems, this locknut delivers consistent performance, durability, and ease of maintenance. NSi Industries’ commitment to quality and engineering excellence is evident in every unit, making this locknut a trusted choice for engineers seeking dependable sealing solutions for critical infrastructure.
  • 1. 1 1/4” size – standard fit for many industrial applications.
  • 2. Dual material construction – steel core with PVC sealing for corrosion resistance.
  • 3. Tight torque locknut – prevents loosening under vibration.
  • 4. Easy installation – compatible with standard threading tools.
  • 5. Certified for industrial use – meets industry standards for reliability.

Specifications

Application
Steel locknut with PVC seal used to provide raintight seal when fastening threaded conduit to unthreaded opening in a box or enclosure.
Cable Entry
Through the fitting or conduit that the locknut is attached to
Color
Yellow
Finish
Zinc Electroplated
Material
Steel
Material
Steel / PVC
Material
Steel/PVC
Size
1 1/4 in
Special Features
Provides raintight seal
Standard
UL
Trade Size
1.25 in
Type
Locknuts
Package Weight (Imperial)
0.071 L
Package Weight (Metric)
0.032 kg
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Frequently Asked Questions

What certifications and codes does the product meet?

The product meets NEMA Standard FB-1 and UL Standard UL-514B. Its UL File Number is E191572.

What is the trade size of this product?

The trade size of this sealing locknut is 1-1/4 inches.

What are the dimensions of the locknut?

Dimension A is 2-1/16 inches and Dimension B is 3/16 inches.

What materials are used in this locknut?

The locknut is made of steel with a PVC seal. It features a zinc electro-plate finish.

What is the application of this sealing locknut?

This steel locknut with a PVC seal is used to provide a raintight seal when fastening threaded conduit to an unthreaded opening in a box or enclosure.

What certifications and codes does the product meet?

The product meets NEMA Standard FB-1 and UL Standard UL-514B. Its UL File Number is E191572.

What is the trade size of this product?

The trade size of this sealing locknut is 1-1/4 inches.

What is the application of this sealing locknut?

This steel locknut with a PVC seal is used to provide a raintight seal when fastening threaded conduit to an unthreaded opening in a box or enclosure.

What are the dimensions of the locknut?

Dimension A is 2-1/16 inches and Dimension B is 3/16 inches.

What materials are used in this locknut?

The locknut is made of steel with a PVC seal. It features a zinc electro-plate finish.

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What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

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What technical support does Tork offer?

Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

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