Best Square Head Bolts. Reviews August, 2020

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

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Small Parts FSC383SHB Grade A Steel Square Head Bolt, 3/8

Current price: 14.16 USD


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Height: 0.3125 Inches

Length: 3 Inches

  • 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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Small Parts FSC381SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)

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Small Parts FSC381SHB Grade A Steel Square Head Bolt, 3/8

Current price: 4.72 USD


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Height: 0.3125 Inches

Length: 1 Inches

Weight: 0.46 Pounds

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel

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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: 13.22 USD


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Height: 0.3125 Inches

Length: 2 Inches

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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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Hard-to-Find Fastener 014973311971 Square Head Bolts, 5/16-18 x 1, Piece-10

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

Current price: 9.08 USD


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Height: 1.44 Inches

Length: 2.5 Inches

Width: 1.62 Inches

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"

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PZRT 10pcs M5 x 10mm Hammer Head Bolt T Screw,10pcs M5 Hexagon Flange Nuts Set, Carbon Steel Nickel Plated for 2020 Series Standard 6mm T-Slot Aluminum Profile

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PZRT 10pcs M5 x 10mm Hammer Head Bolt T Screw,10pcs M5 Hexagon Flange Nuts Set, Carbon Steel Nickel Plated for 2020 Series Standard 6mm T-Slot Aluminum Profile

Current price: 7.99 USD


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  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc

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Swordfish 31400-60pc Square Head Set Screw Assortment

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Swordfish 31400-60pc Square Head Set Screw Assortment

Current price: 23.45 USD


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Height: 1.25 Inches

Length: 8.25 Inches

Width: 4.25 Inches

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc
  • Organized in a pp storage case with chart inside box lid for quick identification
  • Include 6 sizes of 1/4"-20 x 3/4", 5/16"-18 x 3/4", 5/16"-18 x 1", 3/8"-16 x 3/4", 3/8"-16 x 1-1/4", 1/2"-12 x 1"
  • Black oxide finish for extra strength
  • An excellent assortment of Square Head Set Screws

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#10 x 3/4" Stainless Pan Head Square Drive Sheet Metal Self Tapping Drilling Screws, (100pc) 410 Stainless, Choose Size and Qty, by Bolt Dropper.

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#10 x 3/4

Current price: 10.4 USD


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  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc
  • Organized in a pp storage case with chart inside box lid for quick identification
  • Include 6 sizes of 1/4"-20 x 3/4", 5/16"-18 x 3/4", 5/16"-18 x 1", 3/8"-16 x 3/4", 3/8"-16 x 1-1/4", 1/2"-12 x 1"
  • Black oxide finish for extra strength
  • An excellent assortment of Square Head Set Screws
  • LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE.
  • GREAT TO KEEP AROUND: Bolt Dropper hardware is great to have around for use with sheet metal and wet environments. Bolt Dropper hardware is the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion resistant and will support all of your projects.
  • DIMENSIONS: Diameter: #10 | Length: 3/4” | Thread Type: Coarse (standard) | Quantity: 100 pcs | Material: 410 Stainless Steel
  • SELF TAPPING: Our hardware is very strong and is great for both indoor and outdoor use. The stainless steel is superior to regular steel and provides excellent rust resistance in water applications. Our screws have deep cut Square Drive so stripping heads is a thing of the past!
  • HIGH QUALITY STAINLESS: These Pan Head Sheet Metal Screws are 100% 410 Stainless Steel which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today.

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Small Parts FSC38150SHB Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/2" Long (Pack of 10)

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Small Parts FSC38150SHB Grade A Steel Square Head Bolt, 3/8

Current price: 6.22 USD

Saving: $1.78 (22%)


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Height: 0.3125 Inches

Length: 1.5 Inches

Weight: 0.55 Pounds

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc
  • Organized in a pp storage case with chart inside box lid for quick identification
  • Include 6 sizes of 1/4"-20 x 3/4", 5/16"-18 x 3/4", 5/16"-18 x 1", 3/8"-16 x 3/4", 3/8"-16 x 1-1/4", 1/2"-12 x 1"
  • Black oxide finish for extra strength
  • An excellent assortment of Square Head Set Screws
  • LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE.
  • GREAT TO KEEP AROUND: Bolt Dropper hardware is great to have around for use with sheet metal and wet environments. Bolt Dropper hardware is the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion resistant and will support all of your projects.
  • DIMENSIONS: Diameter: #10 | Length: 3/4” | Thread Type: Coarse (standard) | Quantity: 100 pcs | Material: 410 Stainless Steel
  • SELF TAPPING: Our hardware is very strong and is great for both indoor and outdoor use. The stainless steel is superior to regular steel and provides excellent rust resistance in water applications. Our screws have deep cut Square Drive so stripping heads is a thing of the past!
  • HIGH QUALITY STAINLESS: These Pan Head Sheet Metal Screws are 100% 410 Stainless Steel which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today.
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/2" Long (Pack of 10)
  • Length: 1-1/2 inch
  • Thread size: 3/8''-16
  • Material: steel

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Small Parts FSC5161SHB Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 1" Long (Pack of 25)

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Small Parts FSC5161SHB Grade A Steel Square Head Bolt, 5/16

Current price: 8.42 USD


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Height: 0.3125 Inches

Length: 1 Inches

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc
  • Organized in a pp storage case with chart inside box lid for quick identification
  • Include 6 sizes of 1/4"-20 x 3/4", 5/16"-18 x 3/4", 5/16"-18 x 1", 3/8"-16 x 3/4", 3/8"-16 x 1-1/4", 1/2"-12 x 1"
  • Black oxide finish for extra strength
  • An excellent assortment of Square Head Set Screws
  • LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE.
  • GREAT TO KEEP AROUND: Bolt Dropper hardware is great to have around for use with sheet metal and wet environments. Bolt Dropper hardware is the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion resistant and will support all of your projects.
  • DIMENSIONS: Diameter: #10 | Length: 3/4” | Thread Type: Coarse (standard) | Quantity: 100 pcs | Material: 410 Stainless Steel
  • SELF TAPPING: Our hardware is very strong and is great for both indoor and outdoor use. The stainless steel is superior to regular steel and provides excellent rust resistance in water applications. Our screws have deep cut Square Drive so stripping heads is a thing of the past!
  • HIGH QUALITY STAINLESS: These Pan Head Sheet Metal Screws are 100% 410 Stainless Steel which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today.
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/2" Long (Pack of 10)
  • Length: 1-1/2 inch
  • Thread size: 3/8''-16
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 1" Long (Pack of 25)
  • Length: 1 inch
  • Thread size: 5/16''-18
  • Material: steel

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Small Parts FSC503SHB Grade A Steel Square Head Bolt, 1/2"-13" Thread Size, 3" Long (Pack of 5)

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Small Parts FSC503SHB Grade A Steel Square Head Bolt, 1/2

Current price: 8.9 USD


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Height: 0.3125 Inches

Length: 3 Inches

  • 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
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1" Long (Pack of 10)
  • Length: 1 inch
  • Thread size: 3/8''-16
  • Material: steel
  • 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
  • Head Style: Square
  • Finish: Zinc
  • Material: Steel
  • Length: 1 inch
  • Diameter: 5/16"
  • T-type screws design for aluminium extrusions, suitable for standard 6mm T-Slot 20mm aluminum extrusions and most of the other brands 20mm aluminium profile
  • High Quality Carbon steel M5 x 10mm T Screw Bolt Screws Surface chrome finish Anti-corrosion,rustless,non-pollution and high-hardness
  • Flange nut is a nut that has a wide flange at one end that acts as an integrated, non-spinning washer,the serrations help in avoiding vibration of nut and increase the holding power of nut
  • M5 Hexagon Slip Locking Flange Nuts made from high quality carbon steel,surface is plated with nickel for good rust resistance and better performance high hardness and a long service life
  • 2020 Series Aluminum Profile Accessories widely used for building 3D printers, 3D carvers, CNC routers, CNC laser cutters, CNC plasma cutters, robotics projects, machine guards, workstations, etc
  • Organized in a pp storage case with chart inside box lid for quick identification
  • Include 6 sizes of 1/4"-20 x 3/4", 5/16"-18 x 3/4", 5/16"-18 x 1", 3/8"-16 x 3/4", 3/8"-16 x 1-1/4", 1/2"-12 x 1"
  • Black oxide finish for extra strength
  • An excellent assortment of Square Head Set Screws
  • LIFETIME GUARANTEE: We are so confident that our product is the best on the market that we offer a NO HASSLE LIFETIME GUARANTEE.
  • GREAT TO KEEP AROUND: Bolt Dropper hardware is great to have around for use with sheet metal and wet environments. Bolt Dropper hardware is the highest quality available on the market and we stand by our claim 100%. They are strong, corrosion resistant and will support all of your projects.
  • DIMENSIONS: Diameter: #10 | Length: 3/4” | Thread Type: Coarse (standard) | Quantity: 100 pcs | Material: 410 Stainless Steel
  • SELF TAPPING: Our hardware is very strong and is great for both indoor and outdoor use. The stainless steel is superior to regular steel and provides excellent rust resistance in water applications. Our screws have deep cut Square Drive so stripping heads is a thing of the past!
  • HIGH QUALITY STAINLESS: These Pan Head Sheet Metal Screws are 100% 410 Stainless Steel which is one of the highest forms of corrosion resistant steel, making it last longer than other hardware on the market today.
  • Low-Strength Grade A Steel Square Head Bolt, 3/8"-16" Thread Size, 1-1/2" Long (Pack of 10)
  • Length: 1-1/2 inch
  • Thread size: 3/8''-16
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 5/16"-18" Thread Size, 1" Long (Pack of 25)
  • Length: 1 inch
  • Thread size: 5/16''-18
  • Material: steel
  • Low-Strength Grade A Steel Square Head Bolt, 1/2"-13" Thread Size, 3" Long (Pack of 5)
  • Length: 3 inch
  • Thread size: 1/2''-13
  • Material: steel

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