Best Round Head Hex Bolts of 2026

Corey Phillips Avatar
Corey Phillips
Last Updated: 5 Feb 2026

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Round Head Hex Bolts are a type of fastener that is commonly used in construction, engineering and DIY projects. Made from high-quality materials, these bolts have a unique shape that allows for a tight and secure fit. They are popular due to their versatility and strength, and can be used in a variety of applications such as building structures, assembling machinery, and securing heavy equipment. Whether you are a professional tradesperson or a DIY enthusiast, Round Head Hex Bolts are an excellent choice for any project that requires a reliable and durable fastener.

At a Glance: Our Top Picks

NZNSML M5x10 mm Bolts and Nuts Set, 30 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw Cover #TOP 1
NZNSML M5x10 mm Bolts and Nuts Set, 30 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw
ftb score rating icon 9.9
NZNSML M6x12 mm Bolts and Nuts Set, 20 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw Cover #TOP 2
NZNSML M6x12 mm Bolts and Nuts Set, 20 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw
ftb score rating icon 9.8
sourcing map 12Pcs 1/4-20x1-1/2" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel Cover #TOP 3
sourcing map 12Pcs 1/4-20x1-1/2" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel
ftb score rating icon 9.6

Top 10 Round Head Hex Bolts

#TOP 1

NZNSML M5x10 mm Bolts and Nuts Set, 30 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw

NZNSML
RY-031-35
Silver
M5x10mm-30pcs
NZNSML M5x10 mm Bolts and Nuts Set, 30 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw Cover
NZNSML M5x10 mm Bolts and Nuts Set, 30 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw with Nuts and Washers Full Thread for Wood Furniture

Features
Practical Set: NZNSML Provides You With 30 Sets Of Stainless Steel Round Head Hex Socket Nuts And Bolts Combinations. This Includes 30pcs M5x10 Mm Round Head Hex Socket Bolts (thread Diameter 5mm, Length 10mm), Paired With 30pcs Nuts, 30pcs Spring Washers, And 30pcs Flat Washers. This Complete Set Meets The Batch Assembly And Maintenance Needs Of Small And Medium-Sized Equipment, Effectively Improving Assembly Efficiency.
High-Quality Material: NZNSML M5 Round Head Hex Socket Bolts Are Made Of High-Quality 304 Stainless Steel. They Possess Excellent Corrosion And Oxidation Resistance Without Requiring Any Surface Coating, Making Them Suitable For Damp, Acidic, Or Alkaline Environments. Their Mechanical Properties Comply With The ISO 7380 Standard, Offering High Strength, Good Toughness, And Robust Durability. Round Head Hex Socket Bolts Are Not Easily Deformed Or Rusted, Ensuring A Longer Service Life.
Wide Applicability: NZNSML Stainless Steel Hex Socket Head Cap Screws Set Can Be Used Not Only For Daily Household Scenarios Such As Fixing Loose Stool Legs, Reinforcing Cabinets, Installing Bookshelf Shelves, And Repairing Door/window Hinges, But Are Also Widely Applicable In Industrial Assembly Areas Like Instrument Panels, Chassis Enclosures, And Production Line Brackets. The Stainless Steel Material Is Rust-Resistant And Easy To Clean, Suitable For Use In Damp Environments Like Kitchens.
Secure Anti-Loosening: Each NZNSML Stainless Steel Round Head Hex Socket Button Head Bolts Set Is Equipped With Matching Stainless Steel Nuts And Spring Washers. The Dual Anti-Loosening Mechanism, Combining The Mechanical Locking Of The Nut And The Continuous Elastic Preload Of The Spring Washer, Effectively Resists Loosening Caused By Equipment Vibration Or Load Fluctuations. This Makes It Particularly Suitable For High-Dynamic Scenarios Like Motor Bases And Moving Mechanisms.
Hex Socket Drive: NZNSML Stainless Steel Round Head Hex Socket Bolts Feature A Standard Round Head And Hex Socket Drive Structure. This Ensures Tight Contact And High Torque Transmission Efficiency, Effectively Preventing Tool Slippage And Bolt Head Damage. The Round Head Design Sits Flush Naturally Against The Contact Surface After Installation, Offering A Neat Appearance With No Sharp Edges, Facilitating Operation In Confined Or Poorly Visible Spaces.
#TOP 2

NZNSML M6x12 mm Bolts and Nuts Set, 20 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw

NZNSML
RY-031-45
Silver
M6x12mm-20pcs
NZNSML M6x12 mm Bolts and Nuts Set, 20 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw Cover
NZNSML M6x12 mm Bolts and Nuts Set, 20 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw with Nuts and Washers Full Thread for Wood Furniture

Features
Practical Set: NZNSML Provides You With 20 Sets Of Stainless Steel Round Head Hex Socket Nuts And Bolts Combinations. This Includes 20pcs M6x12 Mm Round Head Hex Socket Bolts (thread Diameter 6mm, Length 12mm), Paired With 20pcs Nuts, 20pcs Spring Washers, And 20pcs Flat Washers. This Complete Set Meets The Batch Assembly And Maintenance Needs Of Small And Medium-Sized Equipment, Effectively Improving Assembly Efficiency.
High-Quality Material: NZNSML M6 Round Head Hex Socket Bolts Are Made Of High-Quality 304 Stainless Steel. They Possess Excellent Corrosion And Oxidation Resistance Without Requiring Any Surface Coating, Making Them Suitable For Damp, Acidic, Or Alkaline Environments. Their Mechanical Properties Comply With The ISO 7380 Standard, Offering High Strength, Good Toughness, And Robust Durability. Round Head Hex Socket Bolts Are Not Easily Deformed Or Rusted, Ensuring A Longer Service Life.
Wide Applicability: NZNSML Stainless Steel Hex Socket Head Cap Screws Set Can Be Used Not Only For Daily Household Scenarios Such As Fixing Loose Stool Legs, Reinforcing Cabinets, Installing Bookshelf Shelves, And Repairing Door/window Hinges, But Are Also Widely Applicable In Industrial Assembly Areas Like Instrument Panels, Chassis Enclosures, And Production Line Brackets. The Stainless Steel Material Is Rust-Resistant And Easy To Clean, Suitable For Use In Damp Environments Like Kitchens.
Secure Anti-Loosening: Each NZNSML Stainless Steel Round Head Hex Socket Button Head Bolts Set Is Equipped With Matching Stainless Steel Nuts And Spring Washers. The Dual Anti-Loosening Mechanism, Combining The Mechanical Locking Of The Nut And The Continuous Elastic Preload Of The Spring Washer, Effectively Resists Loosening Caused By Equipment Vibration Or Load Fluctuations. This Makes It Particularly Suitable For High-Dynamic Scenarios Like Motor Bases And Moving Mechanisms.
Hex Socket Drive: NZNSML Stainless Steel Round Head Hex Socket Bolts Feature A Standard Round Head And Hex Socket Drive Structure. This Ensures Tight Contact And High Torque Transmission Efficiency, Effectively Preventing Tool Slippage And Bolt Head Damage. The Round Head Design Sits Flush Naturally Against The Contact Surface After Installation, Offering A Neat Appearance With No Sharp Edges, Facilitating Operation In Confined Or Poorly Visible Spaces.
#TOP 3

sourcing map 12Pcs 1/4-20x1-1/2" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel

a24081700ux0627
sourcing map 12Pcs 1/4-20x1-1/2" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel Cover
sourcing map 12Pcs 1/4-20x1-1/2" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel with Hex Key Wrench for Bed Tables Chairs Furniture

Features
Durable Material: The Hexagon Socket Screws Are Made Of Carbon Steel Material, With Fine Workmanship, Corrosion Resistance, Not Easy To Produce Rust And Long Service Life.
[Hex Socket Round Head Cap Screw]: Color: Black; Material: Carbon Steel; Screw Bolt Size: 1/4-20 X 1-1/2" (Dia.*TP*L); Package Content: 12Pcs X Furniture Screw Bolts With Hex Key Wrench
Wide Application: The Round Hexagon Socket Drive Screws Can Be Applied To Furniture Assembly And Maintenance, Woodworking Projects, Office Appliances, Etc. They Are Suitable For Indoor And Outdoor Use, Such As Beds, Tables, Chairs, Cabinets, Wardrobes Or Other Furniture.
Precision Screw: The Furniture Bolts Adopt Round Head With A Hexagonal Hole In The Top Centre, Which Can Provide Better Torque Transmission And More Stable Performance. Fully Threaded Screw Bolts Which Is Very Smooth And Precise. The Force Is Evenly Distributed And Not Easy To Slip, Suitable For Replacing Old Bolts At Any Time.
Note: Before Purchasing, Please Confirm The Correct Size Required. It Is Recommended To Use A Calliper For Measurement And Try To Avoid Using A Ruler Or Tape Measure.
#TOP 4

NZNSML M4x30 mm Bolts and Nuts Set, 40 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw

NZNSML
RY-031-30
Silver
M4x30mm-40pcs
NZNSML M4x30 mm Bolts and Nuts Set, 40 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw Cover
NZNSML M4x30 mm Bolts and Nuts Set, 40 Pcs Hex Socket Button Head Machine Screws 304 Stainless Steel Round Bolt Allen Screw with Nuts and Washers Full Thread for Wood Furniture

Features
Practical Set: NZNSML Provides You With 40 Sets Of Stainless Steel Round Head Hex Socket Nuts And Bolts Combinations. This Includes 40pcs M4x30 Mm Round Head Hex Socket Bolts (thread Diameter 4mm, Length 30mm), Paired With 40pcs Nuts, 40pcs Spring Washers, And 40pcs Flat Washers. This Complete Set Meets The Batch Assembly And Maintenance Needs Of Small And Medium-Sized Equipment, Effectively Improving Assembly Efficiency.
High-Quality Material: NZNSML M4 Round Head Hex Socket Bolts Are Made Of High-Quality 304 Stainless Steel. They Possess Excellent Corrosion And Oxidation Resistance Without Requiring Any Surface Coating, Making Them Suitable For Damp, Acidic, Or Alkaline Environments. Their Mechanical Properties Comply With The ISO 7380 Standard, Offering High Strength, Good Toughness, And Robust Durability. Round Head Hex Socket Bolts Are Not Easily Deformed Or Rusted, Ensuring A Longer Service Life.
Wide Applicability: NZNSML Stainless Steel Hex Socket Head Cap Screws Set Can Be Used Not Only For Daily Household Scenarios Such As Fixing Loose Stool Legs, Reinforcing Cabinets, Installing Bookshelf Shelves, And Repairing Door/window Hinges, But Are Also Widely Applicable In Industrial Assembly Areas Like Instrument Panels, Chassis Enclosures, And Production Line Brackets. The Stainless Steel Material Is Rust-Resistant And Easy To Clean, Suitable For Use In Damp Environments Like Kitchens.
Secure Anti-Loosening: Each NZNSML Stainless Steel Round Head Hex Socket Button Head Bolts Set Is Equipped With Matching Stainless Steel Nuts And Spring Washers. The Dual Anti-Loosening Mechanism, Combining The Mechanical Locking Of The Nut And The Continuous Elastic Preload Of The Spring Washer, Effectively Resists Loosening Caused By Equipment Vibration Or Load Fluctuations. This Makes It Particularly Suitable For High-Dynamic Scenarios Like Motor Bases And Moving Mechanisms.
Hex Socket Drive: NZNSML Stainless Steel Round Head Hex Socket Bolts Feature A Standard Round Head And Hex Socket Drive Structure. This Ensures Tight Contact And High Torque Transmission Efficiency, Effectively Preventing Tool Slippage And Bolt Head Damage. The Round Head Design Sits Flush Naturally Against The Contact Surface After Installation, Offering A Neat Appearance With No Sharp Edges, Facilitating Operation In Confined Or Poorly Visible Spaces.
#TOP 5

sourcing map M6 x 20mm Flat Round Socket Head Screws

a25012100ux0427
sourcing map M6 x 20mm Flat Round Socket Head Screws Cover
sourcing map M6 x 20mm (25 Pack) Flat Round Socket Head Screws, Stainless Steel Self Tapping Full Thread Hex Socket Cap Screws Bolt for Wood Furniture

Features
[Material] Made Of 304 Stainless Steel, The Round Head Wood Screws Are Made Of 304 Stainless Steel, With A Smooth Surface And No Burrs. They Are Rust-Proof, Corrosion-Resistant, High-Temperature-Resistant, Wear-Resistant, And Not Easy To Deform, And Can Be Used For A Long Time
[Self Tapping Screws] Material: 304 Stainless Steel; Model: M6x20mm; Thread Specification: M6; Thread Diameter: 6mm/0.24"; Screw Cap Thickness: 2.5mm/0.1"; Screw Head Dia: 12.5mm/0.49"; Screw Length: 20mm/0.79"; Inner Hex Dia.:4mm/0.16"; Pitch: 1.8mm / 0.07"; Total Length: 22mm/0.87"; Screw Groove Type: Hex Socket
[Wide Application] The Flat Head Hexagon Socket Screw Is A Commonly Used Fastener In The Home, Such As For Furniture Assembly, Decorative Pendants, Outdoor Gardening, Etc. It Is Also A Choice For Any Woodworker And DIY Creator. It Can Also Be Used In Office Equipment, The Electronics Industry, The Machinery Industry, Etc
[Installation] Use A Suitable Allen Key Or Power Tool. Suppose The Panel's Material Is Very Hard. In That Case, It Is Recommended To Pre-Drill The Holes To Facilitate Screw Insertion And Reduce The Risk Of Damage, Especially In Hardwood Or Metal
[Function] Self-Tapping Screws With Deep Thread And Pointed Head Design, Which Helps To Easily Penetrate Wood And Plastic, Good Holding Force Can Achieve The Effect Of Connection And Tightening, And It Is Not Easy To Deform And Slip
#TOP 6

sourcing map M6 x 25mm Flat Round Socket Head Screws

a25012100ux0428
sourcing map M6 x 25mm Flat Round Socket Head Screws Cover
sourcing map M6 x 25mm (25 Pack) Flat Round Socket Head Screws, Stainless Steel Self Tapping Full Thread Hex Socket Cap Screws Bolt for Wood Furniture

Features
[Material] Made Of 304 Stainless Steel, The Round Head Wood Screws Are Made Of 304 Stainless Steel, With A Smooth Surface And No Burrs. They Are Rust-Proof, Corrosion-Resistant, High-Temperature-Resistant, Wear-Resistant, And Not Easy To Deform, And Can Be Used For A Long Time
[Self Tapping Screws] Material: 304 Stainless Steel; Model: M6x25mm; Thread Specification: M6; Thread Diameter: 6mm/0.24"; Screw Cap Thickness: 2.5mm/0.1"; Screw Head Dia: 12.5mm/0.49"; Screw Length: 25mm/0.98"; Inner Hex Dia.:4mm/0.16"; Pitch: 1.8mm / 0.07"; Total Length: 27mm/1.06"; Screw Groove Type: Hex Socket
[Wide Application] The Flat Head Hexagon Socket Screw Is A Commonly Used Fastener In The Home, Such As For Furniture Assembly, Decorative Pendants, Outdoor Gardening, Etc. It Is Also A Choice For Any Woodworker And DIY Creator. It Can Also Be Used In Office Equipment, The Electronics Industry, The Machinery Industry, Etc
[Installation] Use A Suitable Allen Key Or Power Tool. Suppose The Panel's Material Is Very Hard. In That Case, It Is Recommended To Pre-Drill The Holes To Facilitate Screw Insertion And Reduce The Risk Of Damage, Especially In Hardwood Or Metal
[Function] Self-Tapping Screws With Deep Thread And Pointed Head Design, Which Helps To Easily Penetrate Wood And Plastic, Good Holding Force Can Achieve The Effect Of Connection And Tightening, And It Is Not Easy To Deform And Slip
#TOP 7

sourcing map 12Pcs Furniture Bolts with Wrench

a24081700ux0630
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 8

XRXYMQ M6 Bolts 50 Pcs Bolt M6 x 12 mm Hex Socket Button Head Screws Stainless Steel Bolts A2 Machine Screw

XRXYMQ
Silver
M6x12
XRXYMQ M6 Bolts 50 Pcs Bolt M6 x 12 mm Hex Socket Button Head Screws Stainless Steel Bolts A2 Machine Screw Cover
XRXYMQ M6 Bolts 50 Pcs Bolt M6 x 12 mm Hex Socket Button Head Screws Stainless Steel Bolts A2 Machine Screw for Home Furniture Wood Assembly Repair Industrial Electronic

Features
Premium Materials: XRXYMQ Dome Head Bolts Are Made Of 304 Stainless Steel With A Smooth, Burr-Free Surface. XRXYMQ Machine Screws Are Sturdy And Durable, With Excellent Corrosion And Rust Resistance.
Packaging: 50 M6x12 Mm XRXYMQ Hex Bolts, 1 Hex Screw Electric Screwdriver, And 1 Hex Screw Wrench. XRXYMQ Stainless Steel Bolts Are Suitable For A Variety Of Needs.
Hexagonal Design: XRXYMQ Bolt Feature A Round Headed Hexagonal Drive Structure That Evenly Distributes Torque And Provides Excellent Anti-Slip Performance. Countersunk Bolts Provide A Secure Fastening
Deep Threads: XRXYMQ Long Bolts Have Precision-Machined, Deeper Threads With Uniform Pitch. Stable Under Load, Allen Bolts Prevent Loosening, Deliver Strong Fastening Force.
Applications: XRXYMQ Screw Bolt Suit Furniture Fastening, Woodworking, And Mechanical Devices. Hex Head Screws Withstand Vibration And Impact, Boost Efficiency, And Fit Diverse Scenarios.
#TOP 9

sourcing map 10Pcs 5/16-18x2-1/4" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel

a24081700ux0626
sourcing map 10Pcs 5/16-18x2-1/4" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel Cover
sourcing map 10Pcs 5/16-18x2-1/4" Furniture Bolt, Round Head Hex Socket Cap Screws Bolts Carbon Steel with Hex Key Wrench for Bed Tables Chairs Furniture

Features
Durable Material: The Hexagon Socket Screws Are Made Of Carbon Steel Material, With Fine Workmanship, Corrosion Resistance, Not Easy To Produce Rust And Long Service Life.
[Hex Socket Round Head Cap Screw]: Color: Black; Material: Carbon Steel; Screw Bolt Size: 5/16-18 X 2-1/4" (Dia.*TP*L); Package Content: 10Pcs X Furniture Screw Bolts With Hex Key Wrench
Wide Application: The Round Hexagon Socket Drive Screws Can Be Applied To Furniture Assembly And Maintenance, Woodworking Projects, Office Appliances, Etc. They Are Suitable For Indoor And Outdoor Use, Such As Beds, Tables, Chairs, Cabinets, Wardrobes Or Other Furniture.
Precision Screw: The Furniture Bolts Adopt Round Head With A Hexagonal Hole In The Top Centre, Which Can Provide Better Torque Transmission And More Stable Performance. Fully Threaded Screw Bolts Which Is Very Smooth And Precise. The Force Is Evenly Distributed And Not Easy To Slip, Suitable For Replacing Old Bolts At Any Time.
Note: Before Purchasing, Please Confirm The Correct Size Required. It Is Recommended To Use A Calliper For Measurement And Try To Avoid Using A Ruler Or Tape Measure.
#TOP 10

sourcing map M6 x 25mm Flat Round Socket Head Screws

a25012100ux0431
sourcing map M6 x 25mm Flat Round Socket Head Screws Cover
sourcing map M6 x 25mm (50 Pack) Flat Round Socket Head Screws, Stainless Steel Self Tapping Full Thread Hex Socket Cap Screws Bolt for Wood Furniture

Features
[Material] Made Of 304 Stainless Steel, The Round Head Wood Screws Are Made Of 304 Stainless Steel, With A Smooth Surface And No Burrs. They Are Rust-Proof, Corrosion-Resistant, High-Temperature-Resistant, Wear-Resistant, And Not Easy To Deform, And Can Be Used For A Long Time
[Self Tapping Screws] Material: 304 Stainless Steel; Model: M6x25mm; Thread Specification: M6; Thread Diameter: 6mm/0.24"; Screw Cap Thickness: 2.5mm/0.1"; Screw Head Dia: 12.5mm/0.49"; Screw Length: 25mm/0.98"; Inner Hex Dia.:4mm/0.16"; Pitch: 1.8mm / 0.07"; Total Length: 27mm/1.06"; Screw Groove Type: Hex Socket
[Wide Application] The Flat Head Hexagon Socket Screw Is A Commonly Used Fastener In The Home, Such As For Furniture Assembly, Decorative Pendants, Outdoor Gardening, Etc. It Is Also A Choice For Any Woodworker And DIY Creator. It Can Also Be Used In Office Equipment, The Electronics Industry, The Machinery Industry, Etc
[Installation] Use A Suitable Allen Key Or Power Tool. Suppose The Panel's Material Is Very Hard. In That Case, It Is Recommended To Pre-Drill The Holes To Facilitate Screw Insertion And Reduce The Risk Of Damage, Especially In Hardwood Or Metal
[Function] Self-Tapping Screws With Deep Thread And Pointed Head Design, Which Helps To Easily Penetrate Wood And Plastic, Good Holding Force Can Achieve The Effect Of Connection And Tightening, And It Is Not Easy To Deform And Slip
Buying Guide Image
Editor's Notes

During our round head hex bolt research, we found 306 round head hex bolt products and shortlisted 10 quality products. We collected and analyzed 3,101 customer reviews through our big data system to write the round head hex bolts list. We found that most customers choose round head hex bolts with an average price of £20.00.

The round head hex bolts are available for purchase. We have researched hundreds of brands and picked the top brands of round head hex bolts, including NZNSML, sourcing map, XRXYMQ.

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.