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The Best m4x40 screws of 2022 – Reviewed and Top Rated

After hours researching and comparing all models on the market, we find out the Best m4x40 screws of 2022. Check our ranking below.

2,515 Reviews Scanned

SaleRank No. #1
Adiyer 40-Pack Metric M4 x 40mm Machine Screws for Cabinet Drawer Knob Pull Handle, 304 Stainless Steel, Truss Head Bolts, Phillips Drive
  • Metric M4 machine screws with 0.7mm threaded pitch and 40mm threaded length.
  • Made from 304 stainless steel material, better rust resistance.
  • Truss head machine screws, phillips drive.
  • Fit for most cabinet knobs, drawer knobs or pull handles with metric threads.
  • Metric machine screws for universal use.
Rank No. #2
uxcell M4 x 40mm 12.9 Alloy Steel Hex Socket Head Cap Screws Bolt Black 22mm Thread Length 20pcs
  • Drive Type: Hex Socket; Head Style: Hex Head; Material: 12.9 Alloy Steel
  • Package Content: 20 x Socket Head Cap Screw; Product Name: Socket Head Cap Screw; Thread Size: (DxL1)M4 x 22mm / 0.16" x 0.87"(D*L)
  • Weight: 86g; Main Color: Black; Thread Pitch: 0.7mm
  • Total Length: (L2) 44mm/ 1.7"; Head Size: (AxB) 7 x 4mm/0.28" x 0.16"(D*H)
  • Width Across Flat (W): 3mm/ 0.12"; L Length: 40mm/ 1.6"
Rank No. #3
uxcell M4x40mm Flat Head Machine Screws Inner Hex Screw 304 Stainless Steel Fasteners Bolts 30Pcs
  • [Specification] : ) Model: M4x40mm; Material: 304 Stainless steel; Screw Total Length: 40mm/1.6"; Pitch: 0.7mm / 0.028"; Screw Head Dia: 8mm / 0.315"; Inner Hex Dia.:2.5mm/0.098"; Screw Groove Type: Inner Hex.
  • [100% SOLID STAINLESS STEEL] : ) These Flat Head Screws are made of 304 Stainless Steel which is one of the highest forms of corrosion resistant metals, making it last longer than other hardware on the market today.
  • [SCREWS THAT YOU CAN DEPEND ON] : ) Our Flat Head Machine Screws are very strong and are great for both indoor and outdoor use. This stainless is superior to regular steel and provides excellent rust resistance.
  • [GREAT TO KEEP AROUND] : ) Flat head socket cap screws are great to have around for use in wet environments and have strong oxidation resistance. They are strong, corrosion resistant, and will support all of your projects.
  • [WIDELY USED IN] : ) wind power industry, the aerospace industry, office equipment industry, petrochemical industry, the electronics industry, the communications industry, shipbuilding industry, machinery, etc.
Rank No. #4
uxcell M4x40 Stainless Steel Hex Head Cap Socket Screws 10pcs Silver Tone
  • Drive Type: Hex Socket; Head Style: Socket Cap Head; Material: Stainless Steel
  • Package Content: 10pcs x Hex Socket Cap Screws; Product Name: Hex Socket Cap Screws; Thread Size: M4x40mm/0.16"x1.6"(D*L)
  • Weight: 31g; Fastener Type: Socket Screw; Main Color: Silver Tone
  • Thread Pitch: 0.7mm; Total Length: 43mm/1.7"
  • Head Size: 6.5x3.5mm/0.3"x0.13"(D*H); Hex Socket Size: 3mm/0.12"
Rank No. #5
M4 40mm Screw M4-0.7x40mm Socket Head Cap Screw M4 Socket Cap Bolts Metric Stainless Steel Screws Allen Hex Drive Bright Finish Machine Thread Coarse Threa UNC, 30Pcs (M4x40-30)
  • 【Stainless Steel Material】M4 socket head cap screws and bolts are made of high-quality stainless steel, which is superior to fasteners made of ordinary steel, carbon steel, and other materials. They have higher corrosion resistance and rust prevention effects.
  • 【Screw Parameters】M4 socket head cap screw length: 9mm(including the head) ; thread length is 6mm(excluding the head); the pitch: 0.5mm; thread diameter:3mm; head diameter:5.5mm; head height: 3mm; driver type: 2.0mm; external finish: glossy finish; color: silver.
  • 【 Tightening Effect 】 The M4 socket head cap screw made of 100% stainless steel can match the machine well, with uniform pitch, stable force, not easy to slip, good tightening effect, stronger bite force, long service life, less easy to damage, and more sturdy and durable.
  • 【What did you Get?】 30Pcs M4x40mm screws are packed in a transparent plastic box, easy to keep and perfect for use at home, in the office, or at work. They are very suitable for workers, hobbyists, landlords, repairmen, and other DIY professionals.
  • 【Wide Application Range】socket head cap screws can be widely used in various precision machinery and instrument industries, as well as in household and office appliances, communication equipment, power facilities, automobile and ship assembly, and other industry standard machines.
Rank No. #6
iexcell 50 Pcs M4 x 40mm Thread Pitch 0.7 mm Alloy Steel 12.9 Grade Hex Socket Head Cap Screws Bolts Kit, Black Oxide Finish
  • ✔ Includes 50 Pcs M4 x 40mm Hex Socket Head Cap Screws , Thread Size ( Diameter ): 4 mm, Thread Pitch: 0.7 mm, Thread Length: 40 mm, Total Length ( Includes Head ): 43.91 mm, Screw Head Style: Socket Cap Head, Head Diameter: 7.00 mm, Head Height: 3.91 mm, Screw Drive Style: Hex Socket Drive, also Known as Internal Hex Drive, Hex Size: 3.0 mm
  • ✔ Material of Screws: Alloy Steel 40Cr, Black Oxide Finish; Strength Grade of Screws : 12.9 Grade, Hardness: HRC 39-44, Tensile Strength: 1220 N/mm²
  • ✔ 1 Pcs Hex Key, Hex Size: 3.0 mm, to Drive These Screws Conveniently and Easily
  • ✔ Material of Hex Key: Chrome-Vanadium Steel, Nickel Plated, Higher Strength, Anti-rust
  • ✔ Package: These 50 Pcs M4 x 40mm Hex Socket Head Cap Screws and 1 Pcs Hex Key Come In Plastic Storage Case, Organized Conveniently and Easily
Rank No. #7
Kadrick 1400 Pcs M4 Screws Nuts Washers Assortment M4x6MM-40MM, Hex Socket Button & Cap Head Metric M4 Machine Bolts Kit, 12.9 & 10.9 Grade Alloy Steel,Black Screws for 3D Printing
  • 【Product details】---4sizes of screws M4, thread pitch:0.7mm,thread diameters:4mm.
  • 【High quality】--- This screw assortment is made of 10.9 grade alloy steel with high strength and precise threads
  • 【Good storage and assortment】All These Screws are Packed In a Sturdy Easy-use Plastic Storage Box, Organized Conveniently and Easily.
  • 【Can be widely used】Keep a set of commonly used Kadrick screw sets on hand to make you convenient.
  • 【Brand guarantee】: Kadrick specializes in the production and development of fasteners. Our products have undergone rigorous testing, so you can use them with confidence. Additionally, we provide a 24-month after-sales warranty service. If you have any questions, please feel free to contact us.
Rank No. #8
Metric M4x40 mm Knobs Screws Drawer Pull Handle Screws 304 Stainless Steel Phillips Machine Screws 50pcs
  • Metric M4 machine screws,Thread Diameter: 4mm, Thread Pitch: 0.7mm, Thread Length: 40 mm
  • Head Size: 8.71 x 2.33mm (D*H), Main Color: Silver Tone
  • Head Style: Truss head machine screws, phillips drive.
  • Material: 18-8 (304) Stainless Steel; good rust resistance, ensuring quality and longevity
  • Metric M4 screws ,Only for drawer knobs or handles with metric threads. Thread Coverage: Full Thread
SaleRank No. #9
VIGRUE 365PCS M4 Socket Head Cap Screws 12.9 Alloy Steel, M4 x 8/10/12/20/25/30/35/40mm Internal Hex Socket Bolts Nuts Washer Assortment Kit, Black Oxide Finish
  • Head Type: socket; Thread Diameter: 5mm; Thread Pitch: 0.7mm; Drive Type: internal allen hex; Driver wrench: 3mm; UNC Full Thread
  • Screw Length 8mm to 30mm: this cap screws kit include sizes M4 x 8/10/12/20/25/30/35/40mm socket head screws bolts with matching washers and nuts.
  • Quantity: the metric M4 screws kit contains 8 sizes of the most in-demand models alloy steel button head socket screws nuts washers, totally 365pcs
  • Great Performance: 12.9 grade alloy steel, which features high hardness, good wear resistance, good leak-proof effect, with good fatigue resistance for long time use.
  • Easy to Get the Exact Sizes: The bolts and nuts come in a portable firm clear box with corresponding sizes label. It is convenient for you to put away and store, which allow you to get the one you need quickly, improving your project efficiently.
Rank No. #10
MroMax 20Pcs M4 x 40mm Button Head Socket Cap Bolts Screws, Alloy Steel 10.9 Grade, Allen Socket Drive, Black Oxide Finish, Fully Machine Thread
  • 【Size】Model: M4 x 40mm; Thread length: 40mm/1.57"; Pitch: 0.7mm/0.03"; Screw Head Diameter: 7.6mm/0.3"; Screw Head Thickness: 2.2mm/0.09"; Allen Hex Drive: 2.58mm/0.1"
  • 【Material】Button head socket cap screws are high quality 10.9 grade alloy steel and the surface is treated with black oxide, high hardness, no deformation, anti-oxidation, wear resistance, corrosion resistance, which can ensure long time using.
  • 【Advantage】 Button head bolts is uniform force, the head with no offset, not easy to slip, uniform pitch, obvious screw thread, no residual burrs, the set screw threads will be able to get a good grip.
  • 【Application】Button head socket cap screws are widely used in the home and office appliance, communication equipments, ship assembly , the mechanical industry and small repairs around shops, garages or home furniture fasteners.
  • 【Package Content】20Pcs x Button Head Socket Cap Bolts Screws

Last update on 2024-10-21 / Affiliate links / Images from Amazon Product Advertising API

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  3. Specifications: How powerful they are can be measured.
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  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their m4x40 screws.
  7. Product Quality: You don’t always get what you pay for with an m4x40 screws, sometimes less, and sometimes more.
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