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Best Square Head Bolts - Buying Guide

Last Updated: 05/26/2024

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Bestselling Square Head Bolts on Amazon

  1. Hard-to-Find Fastener 014973311971 Square Head Bolts, 5/16-18 x 1, Piece-10
  2. uxcell Square Head Bolt, 20pcs M6x16mm Fully Thread Carbon Steel Grade 4.8 Square Machine Screws
  3. (10) Square Head 3/4-10 x 4 Bolts Unplated A307 1-1/8 Square
  4. Rustic Square Head Lag Screws, Black Oxide Finish Lag Bolts, 1/4 x 1 1/2-Inch, (Pack of 100)
  5. Small Parts FSC141SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)
  6. The Hillman Group 50211 Square Bolts with Nut, 8-Pack
  7. Lexar Industrial (15) Square Head 5/8-11 x 4inches Bolts Unplated A307 15/16inches Sq
  8. uxcell Square Head Bolt, 2pcs M6x20mm Fully Thread 304 Stainless Steel Grade C Square Machine Screws
  9. Small Parts FSC142SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 2" Long (Pack of 25)
  10. uxcell Square Head Bolt, 20pcs M6x16mm Fully Thread Carbon Steel Grade 8.8 Square Machine Screws, Gray
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  #1

Hard-to-Find Fastener 014973311971 Square Head Bolts, 5/16-18 x 1, Piece-10

Asin: B00L1L2HEO   |   Model: 014973311971   |   PartNumber: 014973311971   |   Ean: 0738287717013, 0014973311971   |   UPC: 738287717013, 014973311971

Features

Material: Steel.
Head Style: Square.
Finish: Zinc.
Length: 1 Inch.

Brand: Hard-to-Find Fastener   |   Manufacturer: Hard-to-Find Fastener

Dimensions: 1.44 x 2.50 x 1.62 inches

Amazon Price: $12.95 | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #2

uxcell Square Head Bolt, 20pcs M6x16mm Fully Thread Carbon Steel Grade 4.8 Square Machine Screws

Asin: B0BKZ36GFJ   |   Model: a22060900ux0206   |   PartNumber: a22060900ux0206

Features

  • Product Name: Square Head Bolt; Material: Carbon Steel; Finish: Zinc Plated; Color: Silver Tone; Thread Size: M6 x 16mm / M6 x 0.63"(D*L); Pitch: 1mm
  • Head Size: 10mm x 10mm x 2.3mm / 0.39 x 0.39 x 0.09(L*W*T); Package Content: 20 x Square Head Bolt
  • Advantage: Square head bolt offers a large bearing area, is made of carbon steel, zinc plated finish to prevent rust, high strength, good wear resistance and good impact resistance, and durable.
  • Application: Square head bolt can be used for toilet lid installation, and it is also widely used in the assembly and maintenance of machinery, railroad, electrical connections, construction, some assembly required furniture and DIY project. Such as the assembly and fixing of guardrails, home appliances, pipeline installations, equipment, steel-framed houses, etc.
  • Installation: A wrench/plier is required for installation. Generally, with a nut and a washer to form a fastener device(Not in the package).
  • See more on Amazon...

Advantage: Square Head Bolt Offers A Large Bearing Area, Is Made Of Carbon Steel, Zinc Plated Finish To Prevent Rust, High Strength, Good Wear Resistance And Good Impact Resistance, And Durable..
Installation: A Wrench/Plier Is Required For Installation. Generally, With A Nut And A Washer To Form A Fastener Device(Not In The Package)..
Application: Square Head Bolt Can Be Used For Toilet Lid Installation, And It Is Also Widely Used In The Assembly And Maintenance Of Machinery, Railroad, Electrical Connections, Construction, Some Assembly Required Furniture And Diy Project. Such As The Assembly And Fixing Of Guardrails, Home Appliances, Pipeline Installations, Equipment, Steel-Framed Houses, Etc..
Head Size: 10Mm X 10Mm X 2.3Mm / 0.39" X 0.39" X 0.09"(L*W*T); Package Content: 20 X Square Head Bolt.

Brand: uxcell   |   Manufacturer: uxcell

Amazon Price: $8.19 ($0.41 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #3

(10) Square Head 3/4-10 x 4 Bolts Unplated A307 1-1/8 Square

Asin: B075HPH9X1

Features

Head Type: Square.
Finish: Plain.
Drive Type: Square.
Length: 4.

Brand: Lexar Industrial   |   Manufacturer: Lexar Industrial

Weight: 6.00 pounds

Amazon Price: $32.99 | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #4

Rustic Square Head Lag Screws, Black Oxide Finish Lag Bolts, 1/4 x 1 1/2-Inch, (Pack of 100)

Asin: B092SW7R7H   |   Model: 252477   |   PartNumber: 252477   |   Ean: 0850020465385   |   UPC: 850020465385

Features

  • Vintage Lag Bolts: These square head lag screws are a hard to find, unique antique style bolt to give all your projects an original look and feel
  • Black Screws: Made from alloy steel and coated with a black oxide finish with a light oil coating to help prevent corrosion, these bolts won't peel or scratch
  • Reliable Hardware Company: Made exclusively for interior use, Maker Co's black carbon steel screws are designed with superior craftsmanship and longevity in mind
  • How To Install: Each black bolt requires a pre-drilled hole and can be easily installed with a wrench or 8 point socket
  • Specifications: Includes 100 decorative screws with 1/4-inch x 1-1/2-inch dimensions to perfectly fit your projects
  • See more on Amazon...

Reliable Hardware Company: Made Exclusively For Interior Use, Maker Co's Black Carbon Steel Screws Are Designed With Superior Craftsmanship And Longevity In Mind.
Specifications: Includes 100 Decorative Screws With 1/4-Inch X 1-1/2-Inch Dimensions To Perfectly Fit Your Projects.
How To Install: Each Black Bolt Requires A Pre-Drilled Hole And Can Be Easily Installed With A Wrench Or 8 Point Socket.
Black Screws: Made From Alloy Steel And Coated With A Black Oxide Finish With A Light Oil Coating To Help Prevent Corrosion, These Bolts Won't Peel Or Scratch.

Brand: MAKERS BOLT   |   Manufacturer: Makers Bolt

Weight: 1.81 pounds

Amazon Price: $18.98 ($0.19 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #5

Small Parts FSC141SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)

Asin: B0767LJ2MP   |   Model: FSC141SHB   |   PartNumber: FSC141SHB

Features

  • Material: steel
  • Thread size: 1/4''-20
  • Length: 1 inch
  • Low-Strength Grade A Steel Square Head Bolt, 1/4-20 Thread Size, 1 Long (Pack of 25)
  • See more on Amazon...

Length: 1 Inch.
Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack Of 25).
Thread Size: 1/4''-20.

Brand: Small Parts   |   Manufacturer: Fastcom Supply

Dimensions: 0.31 x 1.00 x 0.00 inches

Amazon Price: $8.58 ($0.34 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock
List Price: $9.28 ($0.37 / Count)

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  #6

The Hillman Group 50211 Square Bolts with Nut, 8-Pack

Asin: B00MEXRZL8   |   Model: 50211   |   PartNumber: 50211   |   Ean: 0008236049015   |   UPC: 008236049015

Features

  • These top-post square terminal bolts feature a hex nut & measure approximately 1-1/4" long
  • GREAT FOR AUTOMOBILES: Parts ideal for use on automotive battery fixtures
  • PART OF A COMPLETE FASTENING SOLUTION: Includes a matching hex nut for complete installation
  • STRONG, STURDY, RELIABLE: Made of high-quality steel
  • CORROSION-RESISTANT: Material offers strong resistance to rust and corrosion
  • See more on Amazon...

Part Of A Complete Fastening Solution: Includes A Matching Hex Nut For Complete Installation.
Corrosion-Resistant: Material Offers Strong Resistance To Rust And Corrosion.
Strong, Sturdy, Reliable: Made Of High-Quality Steel.
Great For Automobiles: Parts Ideal For Use On Automotive Battery Fixtures.

Brand: The Hillman Group   |   Manufacturer: The Hillman Group

Dimensions: 1.43 x 1.87 x 5.18 inches

Amazon Price: $7.99 ($1.00 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #7

Lexar Industrial (15) Square Head 5/8-11 x 4inches Bolts Unplated A307 15/16inches Sq

Asin: B01LXVW5HF

Features

  • Thread Diameter: 5/8-11
  • Length: 4
  • Specification: ASTM A333
  • Head Type: Square
  • Finish: Plain
  • See more on Amazon...

Specification: Astm A333.
Finish: Plain.
Head Type: Square.
Length: 4.

Brand: Lexar Industrial   |   Manufacturer: Lexar Industrial

Amazon Price: $29.99 | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #8

uxcell Square Head Bolt, 2pcs M6x20mm Fully Thread 304 Stainless Steel Grade C Square Machine Screws

Asin: B0BBPWHQBQ   |   Model: a22060600ux0326   |   PartNumber: a22060600ux0326

Features

  • Product Name: Square Head Bolt; Material: 304 Stainless Steel; Color: Silver Tone; Thread Size: M6 x 20mm / M6 x 0.79"(D*L); Pitch: 1mm
  • Head Size: 10mm x 10mm x 4mm / 0.39 x 0.39 x 0.16(L*W*T); Package Content: 2 x Square Head Bolt
  • Advantage: Square head bolt offers a large bearing area, is made of 304 stainless steel, anti-rust, wear-resistant, corrosion-resistant, and can be used indoors and outdoors.
  • Application: It is widely used in the assembly and maintenance of machinery, railroad, electrical connections, construction, some assembly required furniture and DIY project. Such as the assembly and fixing of guardrails, home appliances, pipeline installations, equipment, steel-framed houses, etc.
  • Installation: A wrench/plier is required for installation. Generally, with a nut and a washer to form a fastener device(Not in the package).
  • See more on Amazon...

Advantage: Square Head Bolt Offers A Large Bearing Area, Is Made Of 304 Stainless Steel, Anti-Rust, Wear-Resistant, Corrosion-Resistant, And Can Be Used Indoors And Outdoors..
Installation: A Wrench/Plier Is Required For Installation. Generally, With A Nut And A Washer To Form A Fastener Device(Not In The Package)..
Application: It Is Widely Used In The Assembly And Maintenance Of Machinery, Railroad, Electrical Connections, Construction, Some Assembly Required Furniture And Diy Project. Such As The Assembly And Fixing Of Guardrails, Home Appliances, Pipeline Installations, Equipment, Steel-Framed Houses, Etc..
Head Size: 10Mm X 10Mm X 4Mm / 0.39" X 0.39" X 0.16"(L*W*T); Package Content: 2 X Square Head Bolt.

Brand: uxcell   |   Manufacturer: uxcell

Amazon Price: $5.89 ($2.94 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

See On Amazon




  #9

Small Parts FSC142SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 2" Long (Pack of 25)

Asin: B0767LJ3HB   |   Model: FSC142SHB   |   PartNumber: FSC142SHB

Features

  • Material: steel
  • Thread size: 1/4''-20
  • Length: 2 inch
  • Low-Strength Grade A Steel Square Head Bolt, 1/4-20 Thread Size, 2 Long (Pack of 25)
  • See more on Amazon...

Length: 2 Inch.
Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 2" Long (Pack Of 25).
Thread Size: 1/4''-20.

Brand: Small Parts   |   Manufacturer: Fastcom Supply

Dimensions: 0.31 x 2.00 x 0.00 inches

Amazon Price: $7.63 ($0.31 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

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  #10

uxcell Square Head Bolt, 20pcs M6x16mm Fully Thread Carbon Steel Grade 8.8 Square Machine Screws, Gray

Asin: B0BKZ21RL7   |   Model: a22060900ux0220   |   PartNumber: a22060900ux0220

Features

  • Product Name: Square Head Bolt; Material: Carbon Steel; Color: Gray; Thread Size: M6 x 16mm / M6 x 0.63"(D*L); Pitch: 1mm
  • Head Size: 14mm x 14mm x 2mm / 0.55 x 0.55 x 0.08(L*W*T); Package Content: 20 x Square Head Bolt
  • Advantage: Square head bolt offers a large bearing area, is made of carbon steel, high strength, good wear resistance and good impact resistance, and durable.
  • Application: It is widely used in the assembly and maintenance of machinery, railroad, electrical connections, construction, some assembly required furniture and DIY project. Such as the assembly and fixing of guardrails, home appliances, pipeline installations, equipment, steel-framed houses, etc.
  • Installation: A wrench/plier is required for installation. Generally, with a nut and a washer to form a fastener device(Not in the package).
  • See more on Amazon...

Advantage: Square Head Bolt Offers A Large Bearing Area, Is Made Of Carbon Steel, High Strength, Good Wear Resistance And Good Impact Resistance, And Durable..
Installation: A Wrench/Plier Is Required For Installation. Generally, With A Nut And A Washer To Form A Fastener Device(Not In The Package)..
Application: It Is Widely Used In The Assembly And Maintenance Of Machinery, Railroad, Electrical Connections, Construction, Some Assembly Required Furniture And Diy Project. Such As The Assembly And Fixing Of Guardrails, Home Appliances, Pipeline Installations, Equipment, Steel-Framed Houses, Etc..
Head Size: 14Mm X 14Mm X 2Mm / 0.55" X 0.55" X 0.08"(L*W*T); Package Content: 20 X Square Head Bolt.

Brand: uxcell   |   Manufacturer: uxcell

Amazon Price: $8.59 ($0.43 / Count) | as of 05/26/2024 (2:44am pst) *DETAILS
Availability: In Stock

See On Amazon






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