Best Carbon Steel Hex Bolts of 2025

Corey Phillips Avatar
Corey Phillips
Last Updated: 1 Feb 2025

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Carbon Steel Hex Bolts are high-quality fasteners that are commonly used in construction, automotive, and manufacturing industries. These bolts are made of carbon steel, which is known for its durability and strength. They come in a hexagonal shape with a threaded shaft, making them easy to tighten and loosen with a wrench or pliers. Carbon Steel Hex Bolts are available in various sizes and finishes to suit different applications. They are recommended for use in environments where high strength and resistance to wear and tear are essential.

At a Glance: Our Top Picks

sourcing map 12Pcs Furniture Bolts with Wrench Cover #TOP 1
sourcing map 12Pcs Furniture Bolts with Wrench
ftb score rating icon 9.9
sourcing map M10x30mm Hex Flange Bolts Cover #TOP 2
sourcing map M10x30mm Hex Flange Bolts
ftb score rating icon 9.8
sourcing map Carbon Steel Hex Head Bolts Cover #TOP 3
sourcing map Carbon Steel Hex Head Bolts
ftb score rating icon 9.6

Top 10 Carbon Steel Hex Bolts

#TOP 1

sourcing map 12Pcs Furniture Bolts with Wrench

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1/4-20x1-3/4"
sourcing map 12Pcs Furniture Bolts with Wrench Cover
sourcing map 12Pcs 1/4-20x1-3/4" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel with Hex Key Wrench for Bed Tables Chairs Furniture

The sourcing map Furniture Bolts are designed for durability and precision. Made from carbon steel, these hex socket round head cap screws resist corrosion, ensuring a long service life. Their fully threaded design allows for smooth installation, providing even force distribution to prevent slipping. You can use these bolts for various furniture applications, including beds, tables, and chairs, making them a versatile choice for your woodworking projects and maintenance needs.

What We Like
Durable carbon steel material
Corrosion resistant
Easy installation
Versatile for various furniture
#TOP 2

sourcing map M10x30mm Hex Flange Bolts

a22041200ux1170
M10x30mm
sourcing map M10x30mm Hex Flange Bolts Cover
sourcing map Metric M10x30mm Hex Flange Bolts, 6pcs 10.9 Grade Carbon Steel Hexagon Head Screws

The sourcing map Hex Flange Bolts are crafted from high-strength 10.9 grade carbon steel, making them durable and wear-resistant. Their dimensions of M10 x 30mm provide versatility for various assembly tasks. The black oxide coating offers excellent anti-corrosion properties, ensuring longevity even in tough environments. The circular flange design acts as a gasket, helping to distribute load effectively and prevent loosening, which is essential for maintaining secure installations in your DIY projects or repairs.

What We Like
High strength carbon steel
Wear-resistant and anti-corrosion
Effective load distribution
Versatile for various applications
#TOP 3

sourcing map Carbon Steel Hex Head Bolts

a18091900ux0135
3/8"*2"(D*L)-5pcs
sourcing map Carbon Steel Hex Head Bolts Cover
sourcing map Hex Head Screw Bolts Carbon Steel 3/8"-16x2" Fastener Grade 5 UNC 5pcs

The sourcing map Hex Bolts are made from durable carbon steel, ensuring strength and longevity. With a thread size of 3/8" x 2", these bolts are versatile and can be used in various applications, making them ideal for both home and office appliances. The hex width of 14.5mm allows for easy tightening, providing you with a secure fit. Additionally, the package contains five bolts, ensuring you have enough for your projects without needing to purchase in bulk, saving you time and effort.

What We Like
Durable carbon steel material
Versatile for various applications
Easy to tighten
Cost-effective packaging
#TOP 4

sourcing map Carbon Steel Hex Head Bolts

a18091900ux0128
sourcing map Carbon Steel Hex Head Bolts Cover
sourcing map Hex Head Screw Bolts Carbon Steel 1/4"-20x3/4" Fastener Grade 5 UNC 20pcs

The sourcing map Hex Head Bolts are crafted from durable carbon steel, ensuring strength and longevity for various applications. With a thread size of 1/4" x 3/4", these bolts are versatile and can easily fit into a range of projects. The hex width of 11mm allows for a secure grip, making installation straightforward and efficient for you. Additionally, the package contains 20 bolts, providing you with ample supply for your home or office needs.

What We Like
Durable carbon steel construction
Versatile thread size
Easy installation
Generous pack size
#TOP 5

sourcing map M8x16mm Hex Flange Bolts, 10pcs

a22041200ux1154
M8x16mm
sourcing map M8x16mm Hex Flange Bolts, 10pcs Cover
sourcing map Metric M8x16mm Hex Flange Bolts, 10pcs 10.9 Grade Carbon Steel Hexagon Head Screws

The sourcing map Hex Flange Bolts are made of high-strength 10.9 grade carbon steel, ensuring durability and wear-resistance. With a dimension of M8 x 16mm, they are ideal for various applications, including household assembly and DIY projects. The circular flange under the head serves as a gasket, distributing load effectively and preventing loosening, which adds reliability to your installations. Additionally, the black oxide coating provides anti-corrosion properties, making these bolts suitable for both indoor and outdoor use.

What We Like
High-strength carbon steel
Anti-corrosion black oxide finish
Effective load distribution
Suitable for various applications
Reliable for DIY projects
#TOP 6

sourcing map M8x25mm Hex Flange Bolts, 5pcs

a22041200ux1157
Black
25mm
sourcing map M8x25mm Hex Flange Bolts, 5pcs Cover
sourcing map Metric M8x25mm Hex Flange Bolts, 5pcs 10.9 Grade Carbon Steel Hexagon Head Screws

The sourcing map Hex Flange Bolts measure M8 x 25mm, making them suitable for various assembly tasks around the home or in construction. Made from 10.9 grade carbon steel, they offer high strength and durability, ensuring they can withstand wear and tear. The black oxide coating provides anti-corrosion benefits, prolonging their lifespan. Additionally, the circular flange design helps distribute load effectively, preventing loosening over time, which is essential for maintaining stability in various applications.

What We Like
High strength carbon steel
Anti-corrosion coating
Load distribution design
Suitable for various applications
Easy installation with a wrench
#TOP 7

sourcing map M10x30mm Hex Flange Bolts

a22041200ux1169
M10x30mm
sourcing map M10x30mm Hex Flange Bolts Cover
sourcing map Metric M10x30mm Hex Flange Bolts, 3pcs 10.9 Grade Carbon Steel Hexagon Head Screws

The sourcing map Hex Flange Bolts are made from high-quality 10.9 grade carbon steel, ensuring exceptional strength and durability. With a size of M10 x 30mm, these bolts are ideal for various applications, including home assembly and maintenance tasks. The black oxide coating provides excellent wear resistance and anti-corrosion properties, enhancing their longevity. Additionally, the circular flange design helps distribute load and prevents loosening, making your projects more secure and reliable.

What We Like
High strength and durability
Wear-resistant and anti-corrosion
Flange design prevents loosening
Suitable for various applications
Easy installation with a wrench
#TOP 8

sourcing map Hex Head Bolts 5/16"-18

a18091900ux0136
sourcing map Hex Head Bolts 5/16"-18 Cover
sourcing map Hex Head Screw Bolts Carbon Steel 5/16"-18 * 1-1/4" Fastener Grade 5 UNC 10pcs

The sourcing map Hex Bolts are crafted from durable carbon steel, making them ideal for various applications. With a thread size of 5/16" x 1-1/4", they provide a secure fit for your projects. The hex width of 12.5mm allows for easy handling, ensuring you can tighten or loosen them with minimal effort. Additionally, the bolts feature 18 teeth, enhancing grip and stability. These features make the sourcing map Hex Bolts a reliable choice for both home and office use.

What We Like
Durable carbon steel material
Secure fit for projects
Easy handling with hex width
Enhanced grip and stability
#TOP 9

sourcing map M6x50mm Hex Flange Bolts, 10pcs

a22041200ux1148
M6x50mm
sourcing map M6x50mm Hex Flange Bolts, 10pcs Cover
sourcing map Metric M6x50mm Hex Flange Bolts, 10pcs 10.9 Grade Carbon Steel Hexagon Head Screws

The sourcing map Hex Flange Bolts are made from durable 10.9 grade carbon steel, ensuring high strength and wear resistance. With dimensions of M6 x 50mm, these bolts are perfect for various applications, including home repairs and DIY projects. The black oxide coating provides excellent anti-corrosion properties, enhancing the longevity of the product. The unique design features a circular flange that acts as a gasket, helping to distribute load and prevent loosening, making your installations more secure.

What We Like
High strength carbon steel
Anti-corrosion coating
Versatile for various applications
Load distribution flange design
#TOP 10

OTOTEC Left Hand Thread Hex Flange Bolts

954-BO
Silver
OTOTEC Left Hand Thread Hex Flange Bolts Cover
OTOTEC 5PCS Left Hand Thread Bolt M8x18mm Full Threaded Hex Flange Bolts Carbon Steel for Drill Chuck Hand Drill Cutting Machine Silver

The OTOTEC Hex Flange Bolts are designed for strength and durability, crafted from carbon steel for excellent corrosion resistance. With precise, clean threads, these bolts easily penetrate wood and plastic, providing a firm hold that won’t easily deform. The left-hand reverse thread design enhances grip during rotation, ensuring a secure fit. Additionally, the flange acts as a flat washer, locking the bolt more firmly in place, which is especially beneficial in demanding environments.

What We Like
High corrosion resistance
Precise and clean threads
Secure left-hand thread design
Flange enhances locking capability
Buying Guide Image
Editor's Notes

During our carbon steel hex bolt research, we found 290 carbon steel hex bolt products and shortlisted 10 quality products. We collected and analyzed 3,378 customer reviews through our big data system to write the carbon steel hex bolts list. We found that most customers choose carbon steel hex bolts with an average price of £7.58.

The carbon steel hex bolts are available for purchase. We have researched hundreds of brands and picked the top brands of carbon steel hex bolts, including sourcing map, OTOTEC. The seller of top 1 product has received honest feedback from 20,002 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.