Fullerkreg
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Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel
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Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel
Nylon Locking Nuts are designed to resist loosening, providing secure fastenings with high thread contact.
Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel
Item #: 33670170

Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel

86% of respondents would recommend this to a friend

Item #: 33670170

€ 14

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

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us Imported from USA store

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Order now and get it around Saturday, September 26
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Nylon Locking Nuts are designed to resist loosening, providing secure fastenings with high thread contact.
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What Stands Out

Durable Material
Crafted from 18-8 stainless steel, these lock nuts resist corrosion, ensuring longevity and performance even in harsh environments.
Secure Fit
The nylon insert prevents loosening under vibration, providing a reliable and stable connection for various applications.
Versatile Use
Ideal for construction and repair, this 10-pack offers great value and is suitable for right-hand threads, meeting ASME specifications.

Product Details

Shop high-quality Fullerkreg 14-20 Nylon Insert Hex Lock Nuts in stainless steel A2-7030418-8. Plain finish, quantity 50. Fast shipping and easy returns at Ubuy French Guiana.
Package Weight1 Pound

Who Should Buy?

Suitable For
  • Home DIYers

    Ideal for home improvement projects, providing secure fastening to prevent loosening over time.

  • Marine Applications

    Perfect for boat building or repair due to corrosion resistance of stainless steel in moist environments.

  • Automotive Enthusiasts

    Great for automotive repairs where vibration resistance and secure fastening are crucial for safety.

Not Suitable For
  • Heavy Machinery

    Not suitable for high-load applications where heavy-duty fasteners are required to withstand extreme forces.

Product Description

Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are Nylon Insert Lock Nuts, and how do they work?

    Answer: Nylon Insert Lock Nuts are specially designed nuts that feature a nylon insert which creates friction against the bolt threads, preventing loosening due to vibration or movement. They work by gripping the bolt tightly, making them ideal for applications where maintaining a secure connection is critical. These nuts are commonly used in heavy machinery, automotive applications, and furniture assembly.
  • Question: What material is used in the construction of these lock nuts?

    Answer: The 12-13 Nylon Insert Lock Nuts by Fullerkreg are made from 18-8 stainless steel, known for its excellent corrosion resistance and strong mechanical properties. This material ensures durability and longevity, making these nuts suitable for both indoor and outdoor applications. With their robustness, they are ideal for use in environments exposed to moisture or harsh weather conditions.
  • Question: Are these lock nuts reusable?

    Answer: Yes, these lock nuts can be reused under certain conditions. If they are not damaged during removal and the nylon insert is still intact, they can provide effective locking performance again. However, if the insert shows signs of wear or if the nut has been subjected to heavy loads or extreme environments, it’s best to replace it for optimal security.
  • Question: What size bolt can I use with the 12-13 Nylon Insert Lock Nuts?

    Answer: The 12-13 Nylon Insert Lock Nuts are designed to fit bolts of the same size, specifically 12-13, ensuring a precise fit for secure fastening. It's crucial to match the nut with the correct bolt diameter for maximum strength and effectiveness. This sizing is particularly relevant in automotive applications or machinery assemblies where threaded components must fit snugly.
  • Question: What is the benefit of the ASME B18.16.6 specification?

    Answer: The ASME B18.16.6 specification ensures that the lock nuts meet specific standards for dimension, performance, and engineering quality. By adhering to these standards, users can be confident that these nuts will perform reliably under a variety of loads and conditions. This is particularly important in safety-critical applications where quality assurance is paramount.
  • Question: Can I use these lock nuts in high-temperature environments?

    Answer: While the 18-8 stainless steel composition of these lock nuts provides decent resistance to heat, it’s essential to consider the specific temperature limits of nylon materials. For moderate temperature applications, they are suitable. However, for high-temperature environments, it is advisable to look for materials designed specifically for high-temperature use to ensure performance and safety.
  • Question: How many lock nuts come in a pack, and is it suitable for larger projects?

    Answer: Each pack contains 10 Nylon Insert Lock Nuts, making it suitable for a variety of projects, whether you are tackling small home repairs or larger manufacturing applications. Having multiple nuts in a pack allows for efficient assembly and repairs without the need for frequent reordering, especially when working on projects that require multiple fasteners.
  • Question: What applications are these lock nuts best suited for?

    Answer: These lock nuts are versatile and can be used in a wide range of applications, including automotive assembly, furniture manufacturing, and home improvement projects. Their ability to maintain a secure fit in high-vibration environments makes them particularly useful in machinery and automotive components. Additionally, they can effectively prevent loosening in outdoor structures and equipment.
  • Question: How do I properly install a Nylon Insert Lock Nut?

    Answer: To properly install a Nylon Insert Lock Nut, first ensure the bolt is clean and free of debris. Thread the nut onto the bolt by hand until it starts to tighten, then use a wrench for proper torque application. Be cautious not to overtighten, as this might damage the nylon insert. Following these steps ensures that the nut locks securely without compromising the insert's integrity.
  • Question: Where can I buy 12-13 Nylon Insert Lock Nut, 10 Pack, 18-8 Stainless Steel by Fullerkreg in French Guiana?

    Answer: You can conveniently purchase the 12-13 Nylon Insert Lock Nut, 10 Pack, 18-8 Stainless Steel by Fullerkreg on Ubuy in French Guiana. Ubuy offers a user-friendly shopping experience with a wide selection of high-quality products, allowing you to find exactly what you need for your projects with ease.

Fullerkreg Locknuts Editorial Review

Fullerkreg #4-40 UNC Nylon Insert Lock Nut, 18-8 Stainless Steel | Plain, Pack of 100 offers reliable fastening solutions with its sturdy stainless steel construction. Users have noted the high quality, stating that it performs well in various applications, from securing parts in motorcycle trailers to being the perfect fit for watercraft hardware. The lock nut features a unified national coarse thread, ensuring compatibility with an array of projects. Additionally, the fully threaded design and external hex drive make installation straightforward and secure. Many reviews reflect satisfaction with the product's quality, often comparing it favorably to local hardware options, highlighting its cost effectiveness.

Customer Reviews & Ratings

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Pros

  • Made from durable stainless steel material
  • Nylon insert ensures a secure fit
  • Fully threaded design for reliability
  • Compatible with various applications
  • Great quality compared to local hardware

Cons

  • Availability might be an issue in some locations

Platform Trust & Buyer Confidence

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4.2/5 9477 reviews
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Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

€ 14

Order now and get it around Saturday, September 26

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Features an elastic Nylon insert that fits tightly against fasteners.
  • Manufactured from durable A2 and A4 Marine Grade Stainless Steel.
  • Available in both metric (M2 to M20) and imperial sizes (No. 2 to 1 inch).
  • High Nylon Locking Nuts allow for greater thread contact.
  • Undergoes three levels of quality testing for guaranteed reliability.
  • Customizable packaging solutions and assembly options available.

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