Best RC Screws Hex Bolts of 2026

Corey Phillips Avatar
Corey Phillips
Last Updated: 5 Feb 2026

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Hex bolts, offered by RC Screws, are essential fasteners used in various industries. These high-quality bolts are known for their durability and strength, making them ideal for heavy-duty applications. With their hexagonal heads, they provide a secure grip and are easy to tighten and loosen. Whether you need to fasten machinery parts or construct structures, RC Screws' hex bolts are a reliable choice that will ensure stability and longevity.

At a Glance: Our Top Picks

M5 Hex Socket Countersunk Machine Screws Cover #TOP 1
M5 Hex Socket Countersunk Machine Screws
ftb score rating icon 9.8
M8 Hex Set Screws - A2 Stainless Steel Cover #TOP 2
M8 Hex Set Screws - A2 Stainless Steel
ftb score rating icon 9.7
M6 Flanged Hex Set Screw Cover #TOP 3
M6 Flanged Hex Set Screw
ftb score rating icon 9.5

Top 10 RC Screws Hex Bolts

#TOP 1

M5 Hex Socket Countersunk Machine Screws

Silver
M5 x 10mm
M5 Hex Socket Countersunk Machine Screws Cover
M5 (5mm x 10mm Inc Head) Hex Socket Countersunk Machine Screws - A2 Grade Stainless Steel (Pack of 20)

Features
Actual Length: 10mm
M5 (5mm) Thread Size
Hex Depth: 2.30mm
Head Diameter: 11.20mm
Countersunk Length: 3.10mm
#TOP 2

M8 Hex Set Screws - A2 Stainless Steel

M8 x 20mm
M8 Hex Set Screws - A2 Stainless Steel Cover
M8 (8mm x 20mm) Hex Set Screw (Fully Threaded Bolt) - A2 Grade Stainless Steel (Pack of 10)

The RC Screws M8 Set is designed with an 8mm thread size and a 20mm length, making it ideal for various fastening tasks. The 13mm head diameter ensures a secure grip, providing stability during use. Additionally, the fully threaded design allows for versatile applications, offering convenience in different projects. Made from A2 grade stainless steel, these screws resist corrosion, ensuring durability and longevity in your work.

What We Like
Durable stainless steel material
Fully threaded for versatility
Secure grip with large head
Ideal for various projects
#TOP 3

M6 Flanged Hex Set Screw

M6 x 30mm
M6 Flanged Hex Set Screw Cover
M6 (6mm x 30mm) Flanged Hex Set Screw (Fully Threaded Bolt) - A2 Grade Stainless Steel (pack of 10)

Features
30mm Length (L)
M6 (6mm) Thread Size
6.6mm Head Length (K)
14.2mm Flange Diameter (D)
10mm Spanner Size
#TOP 4

M5 Countersunk Machine Screws - A2 Stainless Steel

Silver
M5 x 12mm
M5 Countersunk Machine Screws - A2 Stainless Steel Cover
M5 (5mm x 12mm Inc Head) Hex Socket Countersunk Machine Screws - A2 Grade Stainless Steel (Pack of 20)

The RC Screws M5 Screws are designed with a 5mm thread size and an actual length of 12mm, making them ideal for various applications requiring precision and strength. The head diameter of 11.20mm ensures a secure fit, while the countersunk length of 3.10mm allows for flush installation, providing a neat finish. Additionally, the hex depth of 2.30mm facilitates easy tightening with a hex key, ensuring a reliable assembly. These features combine to offer you convenience and efficiency in your projects.

What We Like
Durable A2/304 stainless steel
Flush installation for neat finish
Easy to tighten with hex key
Precision thread size
#TOP 5

M8 Hex Set Screw - A2 Grade Stainless Steel

M8 x 30mm
M8 Hex Set Screw - A2 Grade Stainless Steel Cover
M8 (8mm x 30mm) Hex Set Screw (Fully Threaded Bolt) - A2 Grade Stainless Steel (Pack of 10)

Features
30mm Length (L)
M8 (8mm) Thread Size (D)
Fully Threaded
5.54mm Head Length (K)
13mm Head Diameter (S)
#TOP 6

M6 Hex Socket Button Head Screws

M6 x 8mm
M6 Hex Socket Button Head Screws Cover
M6 (6mm x 8mm) Hex Socket Button Head Screws - A2 Grade Stainless Steel (Pack of 20)

Features
8mm Length (L)
M6 (6mm) Thread Size
4mm Hex Socket (A)
3.3mm Head Length (H)
10.5mm Head Diameter (D)
#TOP 7

M6 Hex Set Screw - A2 Grade Stainless Steel

M6 x 25mm
M6 Hex Set Screw - A2 Grade Stainless Steel Cover
M6 (6mm x 25mm) Hex Set Screw (Fully Threaded Bolt) - A2 Grade Stainless Steel (pack of 20)

Features
25mm Length (L)
M6 (6mm) Thread Size (D)
Fully Threaded
4.1mm Head Length (K)
10mm Head Diameter (S)
#TOP 8

M5 Hex Socket Countersunk Machine Screws

Silver
M5 x 16mm
M5 Hex Socket Countersunk Machine Screws Cover
M5 (5mm x 16mm Inc Head) Hex Socket Countersunk Machine Screws - A2 Grade Stainless Steel (Pack of 20)

Features
Actual Length: 16mm
M5 (5mm) Thread Size
Hex Depth: 2.30mm
Head Diameter: 11.20mm
Countersunk Length: 3.10mm
#TOP 9

M4 Hex Socket Button Head Screws

Silver
M4 x 6mm
M4 Hex Socket Button Head Screws Cover
M4 (4mm x 6mm) Hex Socket Button Head Screws - A2 Grade Stainless Steel (Pack of 20)

Features
6mm Length (L)
M4 (4mm) Thread Size
7.24 - 7.6mm Head Diameter (D)
2.5mm Socket Head (A)
1.95 - 2.2mm Head Length (H)
#TOP 10

M4 Hex Socket Button Head Screws

Silver
M4 x 10mm
M4 Hex Socket Button Head Screws Cover
M4 (4mm x 10mm) Hex Socket Button Head Screws - A2 Grade Stainless Steel (Pack of 20)

Features
10mm Length (L)
M4 (4mm) Thread Size
7.24 - 7.6mm Head Diameter (D)
2.5mm Socket Head (A)
1.95 - 2.2mm Head Length (H)
Buying Guide Image
Editor's Notes

During our RC Screws hex bolt research, we found 16 RC Screws hex bolt products and shortlisted 10 quality products. We collected and analyzed 4,407 customer reviews through our big data system to write the RC Screws hex bolts list. We found that most customers choose RC Screws hex bolts with an average price of £20.00.

The RC Screws hex bolts are available for purchase. The top 10 picks range in price from a low of £5.00 to a high of £7.00, find the one that fits your budget.

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.