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Updated: 19 Apr 2026

10 Best Socket Head Screws

#1 Best Pick
Zmbroll M3 Hex Socket Head Cap Screws 480Pcs M3x4/6/8/10/12/16/20mm Metric Machine Screw 304 Stainless Steel Fully Machine Thread Screws Nuts Washers Assortment Kit with Wrench Key

Zmbroll M3 Hex Socket Head Cap Screws 480Pcs M3x4/6/8/10/12/16/20mm Metric Machine Screw 304 Stainless Steel Fully Machine Thread Screws Nuts Washers Assortment Kit with Wrench Key

Brand: Zmbroll
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  • Standard metric hex socket screws:Drive Type: Hexagon Socket;Head Style:socket head;Thread Size:M3,thread Type :Machine screws,our screw matching a nut and a washer to meet all demands, fully threaded screws provide a stronger hold on metal than other screws
  • Package Included:480Pcs silver hex socket head cap screws nuts and washers and 2pcs silver allen key,the size are: M3x4mm,M3x6mm,M3x8mm,M3x10mm,M3x12mm,M3x16mm,M3x20mm,150Pcs M3 nuts,150Pcs M3 washers
  • High Quality Material:Our hex socket screws are available in a variety of sizes and finishes to suit your specific needs,our socket head cap screws are made of high quality 304 stainless steel,durable, corrosion-resistant,rust-free,pollution-free,screws can serve you for a long time
  • Easy to use:All our hex bolts and nuts and washer are packed in a sturdy easy-use plastic storage box to install and use, make your job more convenient and easy,also enough quantity and style can meet your different needs
  • Widely Application:This hex screws set is perfect for a wide range of industrial and DIY projects.Suitable for household, office equipment industry, the electronics industry, the communications industry, machinery, etc.
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#2 Best Value
M4-0.7 × 14MM Flat Head Socket Head Screws Hex Drive Socket 304 Stainless Steel 18-8, DIN7991, Fully Threaded, Pack of 100

M4-0.7 × 14MM Flat Head Socket Head Screws Hex Drive Socket 304 Stainless Steel 18-8, DIN7991, Fully Threaded, Pack of 100

Brand: COCO Park
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  • HIGH QUALITY MATERIAL SCREW - 304 Stainless Steel (A2-70), high strength, strong and durable, chemical resistance, anti-rust;
  • STANDARD SIZE SCREW - Thread Diameter: 4mm; Thread Pitch: 0.7mm; Total Length (Including Head ): 14mm;
  • Head Diameter: 7.64-8mm; Head Height (approx.): 3.4mm;
  • WIDE USAGE SCREW - Suitable for 2.5mm Allen Socket Drive; Widely used in flush mounting;
  • PACKAGE INCLUDES - 100 x Flat Head Socket Cap Screws;
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#3 Budget Pick
FullFun 1080PCS M2 M3 M4 Hex Socket Head Cap Screw Bolts Nuts and Washer Assortment Kit, 304 Stainless Steel Metric Screws with 3PCS Allen Wrenches, Allen Socket Hex Drive Machine Screws Set

FullFun 1080PCS M2 M3 M4 Hex Socket Head Cap Screw Bolts Nuts and Washer Assortment Kit, 304 Stainless Steel Metric Screws with 3PCS Allen Wrenches, Allen Socket Hex Drive Machine Screws Set

Brand: FullFun
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  • METRIC HEX SOCKET SCREWS KIT: M2 M3 M4 Hex Socket Head Cap Screw Bolts Nuts and Washer Assortment Kit with 3 Allen Wrenches, according to the standardized metric system. And the average error is less than 0.01 mm. A total of 18 different sizes can meet your different needs
  • QUALITY STAINLESS STEEL: Made of stainless steel superior to regular steel and any zinc-plated fasteners, it provides good strength and oxidation and corrosion resistance in bad environments like high temperature, cold weather, and high humidity areas and can ensure a long time use
  • EASY TO GET THE EXACT SIZES: 1080 pieces packed in a durable transparent box with corresponding size labels. When you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs, improving your project efficiently
  • WIDE APPLICATIONS: 1080 pieces Hex Socket Head Cap Screw Bolts Nuts and Washer Assortment Kit is widely used for 3D printers, computers, instruments, electronic products, household appliances, lamps, cabinets, and bicycle repair
  • WHAT YOU GET: 1080Pcs M2 M3 M4 head socket cap screws with matching hex nuts, and washers. Whenever you need us, please communicate with us anytime, we will give you a professional service and reply to you within 24 hours
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#4 Top Choice
FullFun 1060PCS M2 M3 M4 M5 Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Grade Alloy Steel Metric Screws with 4PCS Allen Wrenches, Allen Socket Hex Drive Black Machine Screws Set

FullFun 1060PCS M2 M3 M4 M5 Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Grade Alloy Steel Metric Screws with 4PCS Allen Wrenches, Allen Socket Hex Drive Black Machine Screws Set

Brand: FullFun
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  • METRIC HEX SOCKET SCREWS KIT: M2 M3 M4 M5 Flat Head Socket Head Cap Screw Bolts Nuts Assortment Kit with 4PCS Allen Wrenches, according to the standardized metric system. And the average error is less than 0.01mm. A total of 16 different sizes can meet your different needs
  • QUALITY ALLOY STEEL: Made of alloy steel superior to regular steel and any zinc-plated fasteners, it provides good strength and oxidation and corrosion resistance in bad environments like high temperature, cold weather, and high humidity areas and can ensure long use
  • EASY TO GET THE EXACT SIZES: 1060 pieces packed in a durable transparent box with corresponding size labels. When you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs, improving your project efficiently
  • WIDE APPLICATIONS: 1060 pieces Flat Head Hex Socket Head Cap Screw Bolts Nuts Assortment Kit is widely used for 3D printers, computers, instruments, electronic products, household appliances, lamps, cabinets, and bicycle repair
  • WHAT YOU GET: 1060Pcs M2 M3 M4 M5 Flat Head hex socket cap screws with matching hex nuts, washers and wrenches. Whenever you need us, please communicate with us anytime, we will give you a professional service and reply to you within 24 hours
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#5 Popular Choice
FullFun 480PCS M3 x 4/6/8/10/12/16/20mm Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Alloy Steel Metric Screws with Allen Wrench, Allen Socket Hex Drive Black Machine Screws Set

FullFun 480PCS M3 x 4/6/8/10/12/16/20mm Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Alloy Steel Metric Screws with Allen Wrench, Allen Socket Hex Drive Black Machine Screws Set

Brand: FullFun
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  • METRIC HEX SOCKET SCREWS KIT: M3 x 4/6/8/10/12/16/20 mm Hex Socket Head Cap Screw Bolts Nuts Assortment Kit with Allen Wrench, according to the standardized metric system. And the average error is less than 0.01mm. A total of 7 different sizes can meet your different needs
  • QUALITY ALLOY STEEL: Made of 12.9-grade alloy steel superior to regular steel and any zinc-plated fasteners, it provides good strength and oxidation & corrosion resistance in bad environments like high temperature, cold weather, and high humidity areas and can ensure long use
  • EASY TO GET THE EXACT SIZES: 480 pieces packed in a durable transparent box with corresponding size labels. When you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs, improving your project efficiently
  • WIDE APPLICATIONS: 480 pieces Hex Socket Head Cap Screw Bolts Nuts Assortment Kit is widely used for 3D printers, computers, instruments, electronic products, household appliances, lamps, cabinets, and bicycle repair
  • WHAT YOU GET: 480Pcs M3 x 4/6/8/10/12/16/20 mm hex socket cap screws with matching hex nuts, washers and wrench. Whenever you need us, please communicate with us anytime, we will give you a professional service and reply to you within 24 hours
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#6 Top Pick
Zmbroll M3 Socket Head Cap Self Tapping Screw Silver Grade 8.8 Carbon Steel Metric 400Pcs M3x6/8/10/12/14/16/18/20/25/30mm Socket Allen Head Self Drilling Fasteners Hex Drive Wood Screws

Zmbroll M3 Socket Head Cap Self Tapping Screw Silver Grade 8.8 Carbon Steel Metric 400Pcs M3x6/8/10/12/14/16/18/20/25/30mm Socket Allen Head Self Drilling Fasteners Hex Drive Wood Screws

Brand: Zmbroll
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#7 Top Pick
FullFun 510PCS M3 M4 M5 Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Grade Alloy Steel Metric Screws with 3PCS Allen Wrenches, Allen Socket Hex Drive Black Machine Screws Set

FullFun 510PCS M3 M4 M5 Hex Socket Head Cap Screw Bolts Nuts Assortment Kit, 12.9 Grade Alloy Steel Metric Screws with 3PCS Allen Wrenches, Allen Socket Hex Drive Black Machine Screws Set

Brand: FullFun
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  • METRIC HEX SOCKET SCREWS KIT: 510PCS M3 M4 M5 Button Head Socket Cap Screw Bolts Nuts Assortment Kit with 3PCS Allen Wrenches, according to the standardized metric system. And the average error is less than 0.01 mm. A total of 12 different sizes can meet your different needs
  • QUALITY STAINLESS STEEL: Made of stainless steel superior to regular steel and any zinc-plated fasteners, it provides good strength and oxidation and corrosion resistance in bad environments like high temperature, cold weather, and high humidity areas and can ensure a long time use
  • EASY TO GET THE EXACT SIZES: 510 pieces packed in a durable transparent box with corresponding size labels. When you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs, improving your project efficiently
  • WIDE APPLICATIONS: 510 pieces Button Head Socket Cap Screw Bolts Nuts Assortment Kit is widely used for 3D printers, computers, instruments, electronic products, household appliances, lamps, cabinets, and bicycle repair
  • WHAT YOU GET: 510Pcs M3 M4 M5 screws, nuts, and wrench. Whenever you need us, please communicate with us anytime, we will give you a professional service and reply to you within 24 hours
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#8 Top Pick
uxcell M3 x 6mm Hex Bolt Socket Head Cap Machine Screws Fasteners Black 100 Pcs

uxcell M3 x 6mm Hex Bolt Socket Head Cap Machine Screws Fasteners Black 100 Pcs

Brand: uxcell
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  • Drive Type: Hex Socket; Head Style: Socket Cap Head; Material: 12.9 Alloy Steel
  • Package Content: 100pcs x Socket Head Cap Screws; Product Name: Socket Head Cap Screws; Thread Size: 3mm x 6mm/0.12" x 0.24"(D*L)
  • Weight: 70g; Main Color: Black
  • Thread Pitch: 0.5mm; Thread Length: 6mm; Head Diameter: 5.5mm
  • Head Height: 3mm; Hex Key Size: 2.5mm
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#9 Top Pick
FullFun 200PCS M3 x 4/6/8/10/12/16/20/25mm Hex Socket Flat Head Screw Bolts Assortment Kit, Alloy Steel Metric Screws with Allen Wrench, Allen Socket Hex Drive Black Machine Screws Set

FullFun 200PCS M3 x 4/6/8/10/12/16/20/25mm Hex Socket Flat Head Screw Bolts Assortment Kit, Alloy Steel Metric Screws with Allen Wrench, Allen Socket Hex Drive Black Machine Screws Set

Brand: FullFun
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  • METRIC HEX SOCKET SCREWS KIT: 200PCS M3 x 4/6/8/10/12/16/20/25 mm Hex Socket Flat Head Screw Bolts Assortment Kit with Allen Wrench, according to the standardized metric system. And the average error is less than 0.01mm. A total of 8 different sizes can meet your different needs
  • QUALITY ALLOY STEEL: Made of Alloy steel superior to regular steel and any zinc-plated fasteners, it provides good strength and oxidation and corrosion resistance in bad environments like high temperature, cold weather, and high humidity areas and can ensure long use
  • EASY TO GET THE EXACT SIZES: 200 pieces packed in a durable transparent box with corresponding size labels. When you want to use a certain screw, you don't have to waste time buying it separately, you can choose the suitable one to meet all your needs, improving your project efficiently
  • WIDE APPLICATIONS: 200 pieces Hex Socket Flat Head Screw Bolts Assortment Kit is widely used for 3D printers, computers, instruments, electronic products, household appliances, lamps, cabinets, and bicycle repair
  • WHAT YOU GET: 200Pcs M3 x 4/6/8/10/12/16/20/25 mm screws and wrench. Whenever you need us, please communicate with us anytime, we will give you a professional service and reply to you within 24 hours
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#10 Top Pick
M3 x 8mm Hex Socket Head Cap Screws Bolts,Full Thread,12.9 Alloy Steel Hex Socket Cap bolts Black 100pcs

M3 x 8mm Hex Socket Head Cap Screws Bolts,Full Thread,12.9 Alloy Steel Hex Socket Cap bolts Black 100pcs

Brand: zw99 Store
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  • Material: 12.9 Alloy Steel
  • Metric M3 screws,Thread Length: M3 x 8mm,Thread Diameter: 3mm,
  • Thread Pitch: 0.5mm, Total Length: 11 mm
  • Head Diameter: 5.3mm,Head Height : 3mm
  • Thread Coverage: Full Thread
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