Versatile Premium Round Nut Locking Nut Anti-Loosening for Ultimate Security

• Customization: Available
• Material: Carbon Steel
• Type: Round Head
• Model NO.: 1-1
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN
• Grade: 8.8
• Surface Treatment: Oxidation Black
• Product Grade: a-Level
• Thread Type: Full Thread
• Applicable Industries: Construction, Industry
• Transport Package: Container
• Specification: 1-100
• Trademark: Huilin
• Origin: Handan, Hebei
• HS Code: 0101101010
• Production Capacity: 50000

Product Description

Elevate your equipment's safety and reliability with the Versatile Premium Round Nut, designed for unparalleled anti-loosening performance.

The Anti-Loosening Round Nut, also known as the round nut, is crafted to secure fasteners with cutting-edge mechanical and frictional anti-loosening technologies. Primarily utilized for the axial fixation of shaft components like rolling bearings, it excels in preventing loosening due to vibrations or impacts. Discover its core features and applications below:

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1, Basic Definition

The anti-backlash round nut features a sophisticated thin-walled annular design with a finely threaded inner hole (e.g., M10 × 1-M200 × 3). Its outer circumference is equipped with a groove or opening and is designed for use with a stop washer (commonly known as a "Wang Ba pad"). The ingenious anti-loosening mechanisms are categorized as follows:

Mechanical locking: This involves integrating the inner and outer teeth of the stop washer into the nut groove and shaft keyway, creating a robust mechanical limit.

Friction anti-loosening: Certain models boast a wedge-shaped inclined surface or an engineering plastic coating to amplify thread friction (e.g., HARDLOCK nuts).

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Structural Features

1. Slot design:

Equipped with equidistant slots on the outer circle that align with the stop washer's teeth. Post-installation, the washer teeth bend for a secured mechanical lock.

2. Material and craftsmanship:

Carbon steel (45 # steel): Post heat treatment, its hardness is enhanced to HRC35-45, ideal for general industrial applications.

Stainless steel (304/316): Offers superior corrosion resistance, suitable for humid or chemically aggressive environments.

Surface treatment: Options include blackening, galvanizing, or engineering plastic spraying to boost wear resistance and corrosion protection.

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3, Anti loosening mechanism

1. Mechanical locking type:

Incorporating the locking of washer teeth into the shaft keyway and nut groove, this method restricts relative rotation, making it perfect for high-vibration environments such as elevators and mining machines.

2. Friction anti loosening type:

Wedge slope design: The eccentric wedge-shaped contact surface evenly spreads the locking force across the threads (e.g., HARDLOCK nuts), providing exceptional anti-vibration capabilities, successfully implemented in projects like Japan's Shinkansen.

Plastic spraying technology: Engineering plastic applied to the threaded surface enhances friction through elastic deformation during tightening, though limited by temperature tolerance (-50 ºC to 120 ºC).

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4, Application scenarios

Bearing fixation: Crucial for axial locking of rolling bearings, ensuring the shaft remains motionless.

Heavy machinery: Ideal for securing the shaft ends of mining equipment and bridge steel structures, capable of withstanding substantial vibration loads.

Rail transit: Vital in high-stakes positions like high-speed rail hubs and bogies, employing wedge-shaped anti-loosening nuts for enduring stability.