Delivering to

Why shop with us
  • Shop with confidence knowing you’re getting genuine commercial-grade equipment.
  • Save more with our unbeatable prices and exclusive deals.
  • Rely on experts for fast, friendly support; experts in front of house, back of house and everything in between.
Additional Question? Ask an Expert
$3.72
In Stock
Why shop with us
  • Shop with confidence knowing you’re getting genuine commercial-grade equipment.
  • Save more with our unbeatable prices and exclusive deals.
  • Rely on experts for fast, friendly support; experts in front of house, back of house and everything in between.
Additional Question? Ask an Expert

AllPoints 238 3.9 Inch OEM Castellated Lock Nut with Durable Material

Other  |  MFG #: 238  |  Item #: 1447402
Item: #1447402

Technical details
Manufacturer Biro
Model Number 238
Manufacturer Part # 238
Height 0.4"
Width 3.9"
Depth 4.15"
Weight 0.03 lbs
Hazardous False
Product Type OEM

About this item

Product Details

The Biro 238 Upper Shaft Castellated Lock Nut by AllPoints is a critical component in industrial fastener assemblies, specifically designed for secure locking applications in machinery and equipment. Crafted from durable materials, this OEM-grade lock nut ensures precise engagement with upper shafts, preventing rotation and loosening under vibration or stress. Its castellated design facilitates reliable balancing and torque retention, making it well-suited for high-demand industrial, manufacturing, and maintenance environments requiring exact specifications and long-term stability. The 3.9-inch width and 0.4-inch height provide compatibility with standard shaft diameters, ensuring robust load-bearing capacity and efficient performance in mechanical assemblies.

Top AllPoints 238 Features

The Biro 238 Upper Shaft Castellated Lock Nut offers high-performance mechanical locking for upper shafts in diverse industrial applications. Its castellated profile allows for secure positioning and ease of installation, reducing downtime during maintenance. Made from corrosion-resistant materials, it maintains integrity under harsh conditions. The precise dimensions facilitate seamless integration with existing machinery, enabling stable, vibration-resistant connections essential for continuous operation in manufacturing or heavy equipment workflows.

  • Functionality: Engages securely with upper shaft threads for vibration resistance.
  • Durability: Constructed from corrosion-resistant materials for long-term use.
  • Ease of Maintenance: Castellated design simplifies installation and removal.
  • Application Fit: Compatible with standard shaft diameters in industrial machinery.
  • Workflow Integration: Ensures stable mechanical engagement, minimizing operational disruptions.

Designed for precise, secure locking in industrial equipment requiring durable fasteners.

AllPoints 238 Technical Specs

The Biro 238 Upper Shaft Castellated Lock Nut measures 3.9 inches in width and 0.4 inches in height, constructed from high-strength materials suitable for demanding industrial environments. It weighs approximately 0.03 lbs, providing a lightweight yet robust solution for secure shaft fastenings. Its OEM designation ensures compatibility with standard shaft sizes, facilitating straightforward installation. The product is manufactured in compliance with industry standards, offering reliable performance in mechanical assemblies subject to vibration and stress. The nut requires no electrical requirements and is unaffected by temperature variations within typical operational ranges. Its corrosion-resistant finish ensures longevity in harsh settings without additional maintenance. Dimensions and material specifications are optimized for seamless integration into existing systems, reducing assembly time and enhancing operational stability.

  • Dimensions: 3.9" width × 0.4" height × 4.15" depth
  • Material: Durable metal alloy with corrosion-resistant finish
  • Weight: 0.03 lbs for lightweight handling and installation
  • Application Compatibility: Fits standard upper shaft diameters in industrial fixtures
  • Environmental Tolerance: Operates reliably across temperature range up to maximum recommended levels

What is a commercial upper shaft castellated lock nut?

A commercial upper shaft castellated lock nut is a mechanically engineered fastener used to secure upper shafts in industrial machinery and equipment. Designed with a castellated profile, it provides a locking feature that prevents loosening caused by vibration or torque fluctuations. Typically installed in mechanical assemblies requiring precise torque retention, this lock nut is manufactured from high-quality, corrosion-resistant materials to withstand harsh operational environments. Installed in applications like conveyor systems, gear assemblies, or motor shafts, it contributes to maintaining alignment and structural integrity. The Biro 238 model specifically offers compact dimensions and durable construction, making it well-suited for most applications requiring reliable, long-lasting shaft locking solutions in manufacturing, maintenance, and assembly processes.

Top OEM Shaft Lock Nut for Industrial Mechanical Applications

The Biro 238 OEM shaft lock nut provides robust, precise locking in industrial mechanical setups, ideal for consistent operation in manufacturing and equipment maintenance. With durable construction from AllPoints, it supports moderate workloads and ensures long-term stability in industrial environments.

  • Operation Type — machinery maintenance and assembly
  • Kitchen Type — industrial manufacturing facilities
  • Foodservice Category — industrial equipment installations
  • Workload Qualifier — moderate-duty shaft securing
  • Use Case — stabilizing rotating shafts in machinery

Why Choose AllPoints 238?

The AllPoints 238 Upper Shaft Castellated Lock Nut stands out with its high-quality materials, castellated locking feature, and precision dimensions, delivering exceptional stability and ease of installation in industrial settings. Its corrosion-resistant finish and lightweight profile improve operational efficiency and equipment longevity compared to standard lock nuts.

  • Enhanced locking stability for vibration-heavy environments
  • Corrosion-resistant build for long-term durability
  • Compact, lightweight design simplifies handling
  • Zero electrical requirements, suited for various facilities
  • Optimized dimensions for seamless system integration

Customer reviews

Biro 238 Upper Shaft Castellated Lock Nut
AllPoints Other

AllPoints 238 3.9 Inch OEM Castellated Lock Nut with Durable Material

$3.72

Biro 238 Upper Shaft Castellated Lock Nut