Best Square Head Bolts. Reviews November, 2020

Rustic Square Head Lag Screws 5/16" x 3" Black Oxide by Makers Bolt (10 pcs)

Search only Makers Bolt brand name
Rustic Square Head Lag Screws 5/16

Current price: 12.09 USD


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Weight: 0.5291094288 Pounds

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"

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BlueSunshine Hex Head Crank Arm Bolts 8mm x 15mm, Pack of 6

Search only BlueSunshine brand name
BlueSunshine Hex Head Crank Arm Bolts 8mm x 15mm, Pack of 6

Current price: 6.38 USD

Saving: $1.21 (16%)


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  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm

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

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

Current price: 8.97 USD


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Height: 1.44 Inches

Length: 2.5 Inches

Width: 1.62 Inches

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"

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Small Parts FSC14150SHB Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)

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Small Parts FSC14150SHB Grade A Steel Square Head Bolt, 1/4

Current price: 12.6 USD


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Height: 0.3125 Inches

Length: 1.5 Inches

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel

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1/2"-13 x 7" A307 Grade A Square Head Bolt Plain, Partially Threaded, Size: 1/2"-13, Length: 7", Head: Square, Drive: External Square, Material: Steel, Finish: Plain (Inch) (Quantity: 25)

Search only Jet Fitting & Supply Corp brand name
1/2

Current price: 29.58 USD


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Weight: 9.83 Pounds

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!

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Yaruijia Square Head Titanium Allen Bolts M6x35mm and Hexagon Socket Screws with Washer M5x16mm M5x18mm M5x20mm for Bicycle Stem (M5x20mm+M6x35mm, Gold)

Search only Yaruijia brand name
Yaruijia Square Head Titanium Allen Bolts M6x35mm and Hexagon Socket Screws with Washer M5x16mm M5x18mm M5x20mm for Bicycle Stem (M5x20mm+M6x35mm, Gold)

Current price: 19.99 USD


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  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
  • M6x35mm Bolt:Head Diameter: 10mm/0.39'', Thread Diameter: 6mm/0.24'',Pitch:1.0mm/0.04''
  • M5x16 18 20mm Bolt: Head Diameter: 8.3mm/0.33'', Thread Diameter: 5mm/0.20'',Pitch:0.8mm/0.03''
  • High Performance, Corrosion-Resistant, Light Weight, High Strength and Durability Functions
  • Package include: 7 x Titanium Bolts
  • Material: 6AL/4V(TC4)Titanium Alloy,Grade 5

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Small Parts FSC5162SHB Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)

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Small Parts FSC5162SHB Grade A Steel Square Head Bolt, 5/16

Current price: 13.45 USD


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Height: 0.3125 Inches

Length: 2 Inches

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
  • M6x35mm Bolt:Head Diameter: 10mm/0.39'', Thread Diameter: 6mm/0.24'',Pitch:1.0mm/0.04''
  • M5x16 18 20mm Bolt: Head Diameter: 8.3mm/0.33'', Thread Diameter: 5mm/0.20'',Pitch:0.8mm/0.03''
  • High Performance, Corrosion-Resistant, Light Weight, High Strength and Durability Functions
  • Package include: 7 x Titanium Bolts
  • Material: 6AL/4V(TC4)Titanium Alloy,Grade 5
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)
  • Length: 2 inch
  • Thread size: 5/16''-18
  • Material: steel

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

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Small Parts FSC141SHB Grade A Steel Square Head Bolt, 1/4

Current price: 12.95 USD


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Height: 0.3125 Inches

Length: 1 Inches

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
  • M6x35mm Bolt:Head Diameter: 10mm/0.39'', Thread Diameter: 6mm/0.24'',Pitch:1.0mm/0.04''
  • M5x16 18 20mm Bolt: Head Diameter: 8.3mm/0.33'', Thread Diameter: 5mm/0.20'',Pitch:0.8mm/0.03''
  • High Performance, Corrosion-Resistant, Light Weight, High Strength and Durability Functions
  • Package include: 7 x Titanium Bolts
  • Material: 6AL/4V(TC4)Titanium Alloy,Grade 5
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)
  • Length: 2 inch
  • Thread size: 5/16''-18
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)
  • Length: 1 inch
  • Thread size: 1/4''-20
  • Material: steel

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Small Parts FSC38114SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/4" Long (Pack of 10)

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Small Parts FSC38114SHB Grade A Steel Square Head Bolt, 3/8

Current price: 9.46 USD


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Height: 0.3125 Inches

Length: 1.25 Inches

Weight: 1.01 Pounds

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
  • M6x35mm Bolt:Head Diameter: 10mm/0.39'', Thread Diameter: 6mm/0.24'',Pitch:1.0mm/0.04''
  • M5x16 18 20mm Bolt: Head Diameter: 8.3mm/0.33'', Thread Diameter: 5mm/0.20'',Pitch:0.8mm/0.03''
  • High Performance, Corrosion-Resistant, Light Weight, High Strength and Durability Functions
  • Package include: 7 x Titanium Bolts
  • Material: 6AL/4V(TC4)Titanium Alloy,Grade 5
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)
  • Length: 2 inch
  • Thread size: 5/16''-18
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)
  • Length: 1 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/4" Long (Pack of 10)
  • Length: 1-1/4 inch
  • Thread size: 3/8''-16
  • Material: steel

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Small Parts FSC383SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 3" Long (Pack of 10)

Search only Small Parts brand name
Small Parts FSC383SHB Grade A Steel Square Head Bolt, 3/8

Current price: 14.1 USD


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Height: 0.3125 Inches

Length: 3 Inches

  • Requires pre-drilled hole and installs with wrench or 1/2" 8-point socket
  • 10 Screws
  • Proudly Black Oxidized, sealed with wax, and Packaged in the USA.
  • Square head lag bolts are a hard to find antique bolt style
  • Head size: 1/2"
  • Package includes: 6 PCS
  • In the manufacturer's retail packaging.
  • In the manufacturers retail Packaging.
  • Material: 45# silver plated
  • Size: 8mmx15mm
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1-1/2" Long (Pack of 50)
  • Length: 1-1/2 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Jet Fitting & Supply Corporation has been providing fasteners since 1946. Feel safe when buying from Jet!
  • M6x35mm Bolt:Head Diameter: 10mm/0.39'', Thread Diameter: 6mm/0.24'',Pitch:1.0mm/0.04''
  • M5x16 18 20mm Bolt: Head Diameter: 8.3mm/0.33'', Thread Diameter: 5mm/0.20'',Pitch:0.8mm/0.03''
  • High Performance, Corrosion-Resistant, Light Weight, High Strength and Durability Functions
  • Package include: 7 x Titanium Bolts
  • Material: 6AL/4V(TC4)Titanium Alloy,Grade 5
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 2" Long (Pack of 10)
  • Length: 2 inch
  • Thread size: 5/16''-18
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 1/4"-20" Thread Size, 1" Long (Pack of 25)
  • Length: 1 inch
  • Thread size: 1/4''-20
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/4" Long (Pack of 10)
  • Length: 1-1/4 inch
  • Thread size: 3/8''-16
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 3" Long (Pack of 10)
  • Length: 3 inch
  • Thread size: 3/8''-16
  • Material: steel

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