Featured Categories

  • Tools & Machining
  • Shipping, Packaging & Office Supplies
  • Plumbing
  • Safety

Shop Categories

  • Abrasives & Polishers
  • Adhesives & Tapes
  • Electrical Supplies
  • Electronics
  • Fasteners
  • Food Service & Restaurant Supplies
  • Furniture, Linens & Decor
  • Grounds & Outdoor
  • Hardware & Building Materials
  • Heating & Cooling
  • Janitorial & Cleaning Supplies
  • Lab Equipment & Supplies
  • Lighting
  • Material Handling
  • Medical & Personal Care
  • Paint, Coatings & Supplies
  • Plumbing
  • Power Transmission
  • Pumps
  • Raw Materials
  • Safety
  • Shipping, Packaging & Office Supplies
  • Storage & Workspace
  • Test Instruments & Gauges
  • Tools & Machining
  • Vehicle Maintenance
  • Welding, Soldering & Brazing
  • About Us
  • Promo Codes
  • Contact Us
Added to Cart
Skip to Main Content
FREE Shipping on orders over $50 after you . Restrictions Apply
Zoro Homepage
Close icon
Clipboard Icon Clipboard Icon Quick Order
Cart Icon
0
Cart Icon
0
Cart
  • Low prices on everyday needs. Shop Zoro Select
  • Don't miss these limited time offers. Shop All Deals
  • Get 30 days to pay with Net 30. Apply Now
  1. Home
  2. /
  3. Fasteners
  4. /
  5. Nuts
  6. /
  7. Castle Nuts
Search Feedback

Castle Nuts (184 items) - Page 6

Midwest Fastener 1"-8 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 3PK 68556
Midwest Fastener

1"-8 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 3PK

Zoro # G502508735
Mfr # 68556
product price:  $14.85
/pk 3, $4.95/ea
Midwest Fastener 3/8"-16 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 1 12PK 68547
Midwest Fastener

3/8"-16 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 1 12PK

Zoro # G402508736
Mfr # 68547
product price:  $11.19
/pk 12, $0.93/ea
Midwest Fastener 5/16"-18 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 20PK 68546
Midwest Fastener

5/16"-18 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 20PK

Zoro # G602508741
Mfr # 68546
product price:  $14.15
/pk 20, $0.71/ea
Midwest Fastener 1/4"-20 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 20PK 68545
Midwest Fastener

1/4"-20 Zinc Plated Steel Coarse Thread Slotted Hex Nuts 20PK

Zoro # G202508738
Mfr # 68545
product price:  $13.59
/pk 20, $0.68/ea
Castle Nuts (184 items) - Page 6
  • First
  • Previous
  • 6
    of 6 pages

About Castle Nuts

Castle nuts are a type of fastener that is used to secure two or more parts together. They are often used in conjunction with bolts, screws, and other types of fasteners to create a secure connection.

Types of Castle Nuts

Castle nuts come in a variety of shapes and sizes depending on their intended use. Slotted castle nuts are commonly used for applications where vibration is an issue, while non-slotted versions are better suited for applications where security is paramount. Many slotted nut manufacturers offer custom designs to meet specific needs.

How Castle Nuts Are Made

Castle nuts are typically made from metal alloys such as steel or brass, but can also be made from other materials such as aluminum or plastic depending on the application requirements. The manufacturing process involves cutting threads into the material and then forming the castle shape around it before adding additional features like slots.

Industries That Use Castle Nuts

Castle nuts are commonly used by professionals in industries such as automotive, construction, aerospace engineering, and robotics due to their ability to securely connect components together without coming loose over time. Wherever high levels of security and reliability are needed when connecting two or more parts together, you will likely find castle nuts being used.

Find the Castle Nuts You Need at Zoro

Looking for a specific item? Use our robust search tool to find it by name or keyword, or use our handy filters to narrow down our full assortment. You can also check out our whole selection of fasteners, along with other tools or supplies to ensure you have all you need to tackle the job, especially if you're taking on a DIY project for the first time.
Plus, when you shop at Zoro, you'll always enjoy competitive prices on tons of great brands you know and trust. We make the shopping experience as fast and seamless as possible with free shipping on orders over $50 for registered users, Net 30 payment terms for qualifying customers, and an unparalleled customer service experience.

Related Categories

Hex NutsLock NutsSpring Nuts & Cage NutsCoupling NutsHex Head Cap Screws
General WashersSocket Head Cap ScrewsCotter PinsFully-Threaded Rods & StudsSpring Pins
castle nutcastle nut castle nut5/8-18 nut5/8-18 nutscastle nut wrench
slotted hex nut3/4-10 nuts3/4-16 nutsmetric castle nuts5/8-11 nuts

Sign Up & Save

Take 10% off your next order when you sign up for Zoro emails. Subscribe now to receive your promo code via email.

Follow Us

  • Facebook
  • YouTube
  • LinkedIn
  • Instagram
Every Part Plays a Part

Information

  • About Us
  • Accessibility
  • Careers
  • Inclusion
  • Giving Back
  • Resource Hub
  • Returns
  • Shipping

Shopping

  • Brands
  • Collections
  • My Account
  • Payments
  • Promo Codes
  • Sitemap
  • Track My Order

Services

  • Customer Service
  • FAQs
  • Net 30 Terms
  • Reseller Program
  • Sell on Zoro
  • Participate in Research

Zoro, Inc

Connect

Customer Service From Real People

  • Phone: (855) 289-9676
  • Contact Us

© 2011-2026 Zoro Tools, Inc. All rights reserved.
  • Terms & Conditions
  • Terms of Access
  • Privacy Policy
Zoro, Inc