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Durastar 5/16-18" OD x 2-1/8" Length Plain Axle & 3/8" Thick Nut

Volume discounts applied at checkout
  • 50-99 units: 5% Off
  • 100-199 units: 10% Off
  • 200+ units: 15% Off
Status: In Stock
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Most in-stock items ship same or next business day. Shipping rates shown at checkout.

PRODUCT CODE: AP-0534

Product Overview

Durastar 5/16-18" OD x 2-1/8" Axle with 3/8" Thick Nylon Insert Lock Nut | Fits 06 Series Casters


Key Features

  • Thread Size: 5/16-18" outer diameter for secure mounting and compatibility
  • Axle Length: Precision-engineered 2-1/8" length for stable fitment
  • Nut Thickness: Durable 3/8" thick nut with nylon insert for vibration resistance
  • Locking Mechanism: Nylon insert nut prevents loosening under heavy use
  • Compatibility: Designed specifically for Durastar 06 Series casters
  • Material Quality: High-strength construction ensures long-term reliability
  • Ease of Installation: Simple assembly process with standard tools
  • Application Use: Ideal for caster wheel replacements, repairs, and custom builds

The Durastar 5/16-18" OD x 2-1/8" Plain Axle and accompanying 3/8" thick nylon insert nut are engineered for long-lasting performance and secure fastening. This axle kit is designed to fit seamlessly with Durastar 06 Series casters, offering precise alignment, reduced wear, and improved safety in demanding applications.

Whether you're replacing worn-out hardware or assembling a new caster system, this axle and nut combo ensures tight fastening and resistance to loosening caused by vibration and movement. The nylon insert helps maintain tension and reduces the risk of failure under continuous use.

This hardware set is trusted by professionals across industrial, warehouse, and equipment manufacturing settings. With rugged construction and easy compatibility, it’s the perfect small-part solution for high-performance mobility applications.

Secure Your Caster Assembly with Confidence

Ensure durability and reliability in every caster installation with Durastar’s precision axle and locking nut set. Built for strength. Trusted for performance.

Technical Specs

Technical Specifications

  • Thread Size: 5/16-18" outer diameter - industry-standard for secure fitting
  • Axle Length: 2-1/8 inches - precision-machined for caster alignment and load balance
  • Nut Type: 3/8" thick nylon-insert lock nut - resists loosening due to vibration or motion
  • Material: Corrosion-resistant metal construction - built for durability in industrial use
  • Compatibility: Designed specifically for Durastar 06 Series casters
  • Locking Mechanism: Self-locking nylon insert - ensures consistent fastening without slippage
  • Application: Ideal for carts, trolleys, and mobile equipment in warehouses and factories
  • Performance: Withstands frequent directional changes and dynamic loads
  • Ease of Installation: Threaded design simplifies assembly and maintenance
  • Quality Assurance: OEM-grade hardware trusted by professionals in caster assembly
Key Features

Top 10 Product Features

  • Thread Size: 5/16-18" OD threading offers strong compatibility and reliable fastening for caster hardware.
  • Axle Length: Precisely cut to 2-1/8" to ensure optimal alignment and smooth caster performance.
  • Nut Thickness: Includes a 3/8" thick lock nut for added structural support and load-bearing stability.
  • Nylon Insert Locking: Prevents loosening from vibration or motion, increasing safety and longevity.
  • Perfect Fit for 06 Series: Engineered to match Durastar 06 Series caster models for a secure fit.
  • High-Strength Build: Made from durable materials that withstand heavy use and harsh environments.
  • Anti-Vibration Performance: Nylon insert design helps maintain consistent tension and prevents rattle or wear.
  • Easy Installation: Installs quickly using common tools—ideal for maintenance teams and OEM assembly.
  • Versatile Applications: Suitable for caster wheel replacements, new builds, or equipment upgrades.
  • Trusted Quality: Manufactured to meet professional-grade standards for industrial and commercial use.
Ordering & Shipping Information

Transparent pricing

All pricing and quantity discounts are applied automatically. No promo codes required and no post-checkout price changes.

Upfront shipping costs

Shipping is calculated by order size and weight. Final shipping costs are shown before payment so there are no surprises.

Business-friendly ordering

We support bulk orders, repeat purchases, and fast quotes for larger or custom requirements.

Real support from product specialists

Need help confirming fit, compatibility, or application? Our team works directly with engineers, maintenance teams, and buyers every day.

Trusted by industrial and commercial customers

CasterHQ supplies casters and wheels for manufacturing, material handling, retail, and distribution environments nationwide.

  • Flat-rate shipping by order size. Final shipping cost shown before payment.
  • No post-checkout shipping adjustments or re-billing.
  • Most orders ship from our Texas headquarters near Dallas.

When will my order ship?

In-stock items typically ship same or next business day. Weekend orders ship Monday or Tuesday unless stated otherwise.

Will shipping cost more at checkout?

Shipping is not free on most orders. Your final shipping cost is shown before payment.

Typical transit times after shipment

Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas may take longer.

Made-to-order items (lead times)

Some custom products (select Made in USA casters, keyway wheels, drive wheels) are built after purchase and ship on a longer lead time. When applicable, the ship-time estimate is shown on the product page.

Need an exact freight quote for a large order?

Contact us before ordering and we’ll confirm total landed cost upfront. Contact us.

Additional Information

Durastar 5/16-18" Axle x 2-1/8" with 3/8" Nylon Insert Nut – Engineered for Durastar 06 Series Casters


The Durastar 5/16-18" OD x 2-1/8" Length Axle with a 3/8" thick nylon insert lock nut is designed to meet the needs of professionals looking for reliable, high-performance caster hardware. Manufactured for compatibility with Durastar 06 Series casters, this axle and nut set provides secure fastening, reduced vibration, and extended service life in demanding applications.

Precision-machined with a 5/16-18" thread and a total length of 2-1/8", the axle ensures proper fitment and alignment across a variety of caster models. The included 3/8" lock nut features a nylon insert, which helps maintain consistent tension and prevents loosening caused by movement, vibration, or repetitive use. This makes it ideal for use in environments such as warehouses, industrial carts, assembly lines, and rolling equipment platforms.

Durastar’s commitment to quality is reflected in the durability and reliability of this axle set. The rugged build quality and attention to detail reduce the risk of hardware failure, offering peace of mind and long-term value. Whether you're maintaining existing caster wheels or assembling a new setup, this axle and nut combo is trusted by professionals for a reason.

Perfect for Industrial and Commercial Use

This component is especially valuable for facilities prioritizing safety, consistency, and mobility performance. Its compatibility with the 06 Series makes it an excellent choice for OEM applications, routine maintenance, or system upgrades.

Built to Perform—Engineered to Last

Choose the Durastar 5/16-18" Axle with Nylon Insert Nut for dependable caster assembly and enhanced operational efficiency. This small yet essential part plays a big role in the longevity and stability of your caster systems.

Durastar 5/16-18
Durastar 5/16-18" OD x 2-1/8" Length Plain Axle & 3/8" Thick Nut

$3.00

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