Best Plastic Hex Bolts of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Plastic hex bolts are a type of fastener made from durable and lightweight plastic materials. These bolts are designed to provide a secure and stable connection between two or more objects without the risk of rust, corrosion or electrical conductivity. They come in a range of sizes and colours to suit various applications and are easy to install using standard hex wrenches. Plastic hex bolts are ideal for use in industries such as automotive, construction, and electronics, where metal bolts may not be suitable due to their weight or the risk of damage to sensitive components.

At a Glance: Our Top Picks

TERF® M8 Plastic Hex Nut Bolt Covers Cover #TOP 1
TERF® M8 Plastic Hex Nut Bolt Covers
ftb score rating icon 9.9
TERF® M8 Black Plastic Hex Nut Covers Cover #TOP 2
TERF® M8 Black Plastic Hex Nut Covers
ftb score rating icon 9.8
10x Black Hex Head Screws and Nuts Set Cover #TOP 3
10x Black Hex Head Screws and Nuts Set
ftb score rating icon 9.6

Top 10 Plastic Hex Bolts

#TOP 1

TERF® M8 Plastic Hex Nut Bolt Covers

TERF - Hex Nut & Bolt Cap Cover
White
TERF® M8 Plastic Hex Nut Bolt Covers Cover
TERF® M8 White Plastic Hex Nut Bolt Dome Cap Cover M8 (13mm Spanner) Nut and Bolt Protective Caps Cover Hexagonal - Pack of 20

The TERF® M8 Cap Covers come in a pack of 20 and are made from high-quality PE plastic, ensuring durability and resistance to deformation. These covers protect your nuts and bolts from rust, dust, and other environmental factors, extending their lifespan. They are compatible with hexagonal bolts and nuts, making them easy to fit and remove. Additionally, their lightweight and tough design beautifies your fixtures while preventing corrosion from moisture and UV rays.

What We Like
Durable and sturdy material
Protects against rust and dust
Easy to fit and remove
Lightweight and tough design
Enhances appearance of fixtures
#TOP 2

TERF® M8 Black Plastic Hex Nut Covers

TERF - Hex Nut & Bolt Cap Cover
Black
M8 (13mm Spanner)
TERF® M8 Black Plastic Hex Nut Covers Cover
TERF® M8 Black Plastic Hex Nut Bolt Dome Cap Cover M8 (13mm Spanner) Nut and Bolt Protective Caps Cover Hexagonal - Pack of 20

The TERF® M8 Hex Nut Caps come in a pack of 20 and are made from premium PE plastic, ensuring durability and resistance to corrosion. They effectively protect your bolts from rust, dust, and moisture, which can extend their lifespan and maintain their appearance. These caps are designed for hexagon-shaped bolts and nuts, making them easy to fit and remove. With their wide application, they are suitable for various settings, including machine equipment and street lighting, providing essential protection against weathering.

What We Like
Durable PE plastic material
Protects against rust and dust
Easy to fit and remove
Wide range of applications
Enhances appearance of bolts

10x Black Hex Head Screws and Nuts Set

5060744291077
black
10x Black Hex Head Screws and Nuts Set Cover
10x Black Hex Head Screws Polypropylene (PP) Plastic Nuts and Bolts, Washers, M8 x 100mm

The Caterpillar Red Hex Bolts are made from polypropylene, a material known for its impressive strength-to-weight ratio. This means you can rely on these bolts to deliver solid performance without adding unnecessary weight. Additionally, polypropylene's excellent chemical resistance ensures these bolts can withstand exposure to acids and solvents, making them ideal for various environments. The moisture resistance of this material means it won’t absorb water, providing long-lasting durability. Lastly, the design allows for easy removal and refitting, giving you the convenience of quick adjustments when needed.

What We Like
High strength-to-weight ratio
Excellent chemical resistance
Moisture resistant
Easy to remove and refit
#TOP 4

20x Nylon Hex Head Bolts, Nuts, Washers

5060744291220
20x Nylon Hex Head Bolts, Nuts, Washers Cover
20x Natural Nylon Hex Head, M10 x 40mm, Plastic Nuts and Bolts, Washers, Hexagon, Nylon

The Nylon Hex Head Bolts offer a robust solution for your fastening needs. Made from tough nylon, these fasteners provide excellent electrical insulation and resist corrosion, making them ideal for a variety of applications. With a high tensile strength, they ensure durability under stress, giving you confidence in their reliability. Additionally, their resistance to most organic solvents and fuels means they can withstand harsh environments, providing convenience and longevity for your projects.

What We Like
Lightweight yet strong
Corrosion-resistant materials
High tensile strength
Resistant to solvents and oils
Easy to fit with tools
#TOP 5

10x Nylon Hex Head Bolts, Nuts and Washers

5060744291213
Black
10x Nylon Hex Head Bolts, Nuts and Washers Cover
10x Black Nylon Hex Head, M12 x 50mm, Plastic Nuts and Bolts, Washers, Hexagon, Nylon

The Caterpillar Red Nylon Bolts are made from tough, lightweight nylon, ensuring excellent electrical insulation and resistance to corrosion. With a length of 50mm and a diameter of 12mm, these fasteners are designed for high torque applications, allowing you to remove and refit them repeatedly without worrying about stripping. Their impressive tensile strength and high wear resistance make them perfect for a variety of projects, giving you the confidence that they will hold up well over time.

What We Like
Lightweight and durable material
Excellent electrical insulation
High wear and impact resistance
Resistant to solvents and oils
#TOP 6

METALLIXITY Nylon Hex Bolts for Various Uses

mtf240112xt000215
White
M6-1x25mm
METALLIXITY Nylon Hex Bolts for Various Uses Cover
METALLIXITY Nylon Hex Bolts (M6-1x25mm) 50Pcs, Plastic Coarse Fully Threaded Metric Hex Head Cap Screw Bolt - for Various Industrial, White

The METALLIXITY Hex Bolts are versatile nylon screws designed for various fastening applications across industries. With a strong Class 4.8 grade, these M6x25mm bolts ensure reliable performance in communication equipment and ship assembly. Their nylon material offers excellent corrosion resistance and insulation, making them lightweight and easy to handle. You will find these white nylon head cap screws incredibly user-friendly, serving as a perfect replacement for old or broken plastic hexagon head screws.

What We Like
Corrosion-resistant nylon material
Lightweight and easy to carry
Reliable for industrial use
User-friendly installation
Perfect for replacements
#TOP 7

10x Nylon Hex Head Bolts, Nuts, Washers

5060744291251
10x Nylon Hex Head Bolts, Nuts, Washers Cover
10x Natural Nylon Hex Head, M10 x 100mm, Plastic Nuts and Bolts, Washers, Hexagon, Nylon

The Nylon Hex Head Fasteners are a great choice for those seeking reliable and durable fastening solutions. Made from tough PA 66 nylon, these bolts, nuts, and washers provide excellent electrical insulation and resist corrosion. With high tensile strength, they ensure your projects are secure and long-lasting. Additionally, their ability to withstand most organic solvents, fuels, and weak acids makes them versatile for various applications. You can easily fit them manually or use a wrench for high-torque situations, giving you peace of mind in your work.

What We Like
Lightweight and durable material
Excellent electrical insulation
High tensile and impact strength
Resistant to various chemicals
Easy to fit with tools
#TOP 8

Caterpillar Red Nylon Hex Head Fasteners Set

5060744291282
Caterpillar Red Nylon Hex Head Fasteners Set Cover
5X Natural Nylon Hex Head, M12 x 150mm, Plastic Nuts and Bolts, Washers, Hexagon, Nylon

The Caterpillar Red Hex Bolts are crafted from durable nylon, making them lightweight yet exceptionally strong. Their electrical insulating properties ensure safety in various applications, while the non-corrosive nature protects against rust and deterioration. With a high tensile strength, these fasteners can withstand significant force, allowing you to use them confidently in demanding situations. Furthermore, their resistance to solvents, oils, and weak acids means you can rely on them for a wide range of uses without worrying about degradation.

What We Like
Lightweight and durable
Excellent electrical insulation
High tensile strength
Resistant to solvents and oils
#TOP 9

M4*25mm Black Metal Bolts by Vokenforu

VK0098-M4*25mm
M4*25mm
M4*25mm Black Metal Bolts by Vokenforu Cover
M4*25mm Black Metal Bolts, Hex Socket Head Zinc Plating 304 Stainless Steel Bolts Screws, Fasteners Bolts for Plastic Wood Furniture and Drywall 50 Pcs

The Vokenforu Hex Bolts are designed for durability and strength, made from premium 304 stainless steel. Their M4 size, with a socket head diameter of 7.3 mm to 7.6 mm, ensures easy installation using a standard hex spanner. You will appreciate their versatility, as they can be used with various materials, including metal, plastic, and wood. Additionally, the smooth, burr-free design and uniform pitch of the threads enhance installation efficiency, saving you time on your projects.

What We Like
Durable stainless steel construction
Easy installation with hex spanner
Versatile for multiple materials
Efficient thread design
#TOP 10

Biaungdo 30 Pair Nylon Hex Bolts Set

QY20230927-01002
White
M8x25mm
Biaungdo 30 Pair Nylon Hex Bolts Set Cover
Biaungdo 30 Pair M8 x 25mm Nylon Hex Bolts, White Plastic Hex Bolts Full Thread Hex Head Screws and Nuts Set

The Biaungdo Nylon Hex Bolts are an ideal solution for your fastening needs, providing you with 30 pairs of durable nylon screws and nuts. Each screw measures M8x25mm, ensuring a perfect fit for various applications. Made from high-quality nylon, these screws are corrosion-resistant and lightweight, making them easy to transport and use. You will appreciate how simple they are to install, serving as a reliable replacement for old plastic hexagon head screws.

What We Like
Corrosion-resistant nylon material
Easy to install and use
Lightweight and portable
Suitable for various applications
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What are plastic bolts called?

Nylon fasteners, as the name seems to suggest, are fasteners that are made out of the plastic nylon. This type of plastic is usually modified during production to make it tough so that it can withstand the conditions that a regular fastener will be exposed to.

2. What are plastic bolts used for?

These are often used with household appliances, such as washing machines, and automotive parts. These plastic fasteners are often made of tough molded nylon that is designed to resist corrosion, chemicals, abrasion, and vibration.

3. What is the difference between hex bolt and hex screw?

Generally speaking, hex cap screws are used in precise applications like an OEM setting where tight tolerances are required. Hex bolts are often specified when the mechanical properties are more important than dimensional tolerances, like the construction industry.

4. What is a hex bolt called?

Hex bolts, also called hexagon screw head bolts, hex cap bolts, hex-cap screws, or machine bolts, are a very common choice when it comes to construction and repair. Hexagon screw head bolts come in a large variety of sizes and diameters.

Editor's Notes

During our plastic hex bolt research, we found 146 plastic hex bolt products and shortlisted 10 quality products. We collected and analyzed 4,426 customer reviews through our big data system to write the plastic hex bolts list. We found that most customers choose plastic hex bolts with an average price of £12.53.

The plastic hex bolts are available for purchase. We have researched hundreds of brands and picked the top brands of plastic hex bolts, including TERF, Caterpillar Red, METALLIXITY, Vokenforu, Biaungdo. The seller of top 1 product has received honest feedback from 1,505 consumers with an average rating of 4.8.

Written by
Corey Phillips Avatar

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.