Top 20 Best 1/4-20 Machine Screw Reviews Comparison

Looking for the best 1/4-20 machine screw? We have evaluated 283598 reviews from top experts. Here are our top-ranked picks, including top-selling 1/4-20 machine screw.

Having trouble buying a great 1/4-20 machine screw? We understand this problem because we have gone through the entire 1/4-20 machine screw research process already, which is why we have put together a comprehensive list of the best 1/4-20 machine screw available in the market today.

After hours of researching and using all the models on the market, we find the best 1/4-20 machine screw of 2022. Check out our ranking below!

Bestseller No. 1
Prime-Line 9001954 Machine Screws, Flat Head, Phillips Drive, 1/4 inch-20 X 1-1/2 inch, Grade 18-8...
  • Size: 1/4 inch-20 X 1-1/2 inch
  • Flat Head, Phillips Drive
  • Use with nuts or pre-threaded holes of the same diameter and thread size
Bestseller No. 3
VIGRUE 305Pcs 1/4-20 Button Head Socket Cap Screw Bolts Nuts Washers Assortment Kit, Length 3/8" to...
  • √ Head Type: Button; Dia./Thread Size: 1/4"-20; Head Dia.: 0.437"; Head Height: 0.132"; Drive Type: Hex; Driver Size: 5/32 in.
  • √ Screw Length: 1/4-20x3/8",1/4-20x1/2",1/4-20x5/8",1/4-20x3/4",1/4-20x1",1/4-20x1-1/4",1/4-20x1-1/2" Button Head Screws/Bolts with matching washers and nuts.
  • √ Quantity: Contains 305pcs/7 sizes of the most commonly used 12.9 Alloy Steel Button Head Socket Screws/Bolts Nuts Washers.
Bestseller No. 4
1/4-20 x 2" Flat Countersunk Head Socket Cap Screws, Full Machine Thread Coverage, Allen Hex Drive,...
  • Package: 25 PCS 1/4-20 x 2" Flat Head Socket Cap Screws (Specification described in the pictures)
  • Screw Length: 2 inch or 50.8mm (including the height of the flat head); Please pay attention the thread length is the total screw length minus the head height.
  • Countersunk 82+-2 degree; Thread Size: 1/4-20; Thread Pitch: 20 TPI Coarse Thread UNC; Outside Diameter of the Head: approximately 0.48-0.531 inch
Bestseller No. 5
Bestseller No. 6
binifiMux 20pcs 1/4-20 x 1-3/4" Pan Head Bolts Machine Screws, Phillips Drive, 304 Stainless Steel...
  • ✔ Name: 1/4 - 20x1-3/4" Machine Screws;
  • ✔ Drive type: Phillips; ✔ Head type: Pan head;
  • ✔ Quantity: 20pcs; ✔ Material: 304 Stainless Steel;
Bestseller No. 7
Glvaner 1/4"-20 Thread Size 1-1/2" Thread Length (25 pcs) Flat Head Phillip Drive Machine Screws 304...
  • Thread Size: 1/4"-20; Thread Pitch: 20 TPI; Screw Length: 1-1/2 inchincluding the head height; Thread Type: Coarse Thread
  • Material: 304 stainless steel (A2) and no exterior finish, greater strength and corrision resistance performance than regular stianless steel or zinc plated fasteners.
  • Package: 25 Pieces; Phillips Drive No: #3
Bestseller No. 8
Steel Truss Head Machine Screw, Black Oxide Finish, Meets ASME B18.6.3, #3 Phillips Drive, 1/4"-20...
  • The package length is 16.256 centimeters
  • The package height is 5.588 centimeters
  • The package width is 10.668 centimeters
Bestseller No. 9
1/4-20 x 3/4" Pan Head Machine Screw, Phillips Drive, 304 Stainless Steel 18-8, Bright Finish, Fully...
  • Phillips Drive Size: #3
  • Thread Size:1/4-20; Thread Pitch: 20 TPI; Thread Type: Coarse Thread/ UNC; Thread Style: Right Hand
  • Exterior Finish: Bright Finish; Color: Silver Tone; Quantity: 50 PCS
SaleBestseller No. 10
Steel Pan Head Machine Screw, Black Oxide Finish, Meets ASME B18.6.3, #3 Phillips Drive, 1/4"-20...
  • The package length is 7.111 centimeters
  • The package height is 5.588 centimeters
  • The package width is 8.382 centimeters
Bestseller No. 11
1/4-20 Hex Button Head Cap Screw, VIGRUE 300pcs 304 Stainless Steel UNC Hexagon Bolts Flat Washers...
  • 🔧Great Performance: The kit is made of 304 stainless steel, which features strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. They have superior rust resistance and the excellent of oxidation resistance, which can ensure long time using and prolong screws lifespan.
  • 🔧1/4-20 UNC Series Meet Daily Needs: The set includes 1/4-20 x 3/8" 1/2" 5/8" 3/4" 1" 1-1/2" 1-1/4" 2"UNC thread hex button head screws washers and nuts assortment kit serves a wide range of use, good for professionals, amateurs, landlords, repairmen, other DIY. The kit has lots of 8 different sizes, which can meet the maximum of requirement.
  • 🔧Fine Workmanship:The nuts and flat washers expand the contact area and reduce the pressure in order to protect the screws and parts. Compact and force uniform screw thread is not easy to out of shape and slid in the process of rolling and installation.
Bestseller No. 12
Bestseller No. 14
1/4"-20 X 3/4" Stainless Phillips Truss Head Machine Screw, (25pc), Coarse Thread, 18-8 (304)...
  • 【100% Solid Stainless Steel】These Truss Head Screws are made of 18-8 (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 Truss 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】Bolt Dropper stainless hardware is great to have around for use in 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.
Bestseller No. 15
Bestseller No. 16
VIGRUE Screws Bolt Nut Flat Washers 304 Stainless Steel Machine Screws Assortment Kit with Wrench...
  • Durable Material: high quality 304 stainless steel, superior rust resistance, with fine workmanship, for a long time use.
  • 11 Different Sizes: this screw kit includes, #8-32x1/2", #8-32x3/4", #8-32x1", #8-32x1-1/4", #10-24x1/2", #10-24x3/4", #10-24x1", 1/4-20x1/2", 1/4-20x1", 1/4-20x1-1/4", 1/4-20x1-1/2", come with #8-32, #10-24, 1/4-20 nuts and washers for handy using.
  • Easy Organization: This set are organized in compartments in a transparent storage case with snap-close, clear view storage case for easy identification
Bestseller No. 17
1/4-20 x 1-1/4” Round Head Combo Machine Screws, 100
  • 1/4-20 x 1-1/4” Round Head Combo Machine Screws
  • Slotted/Philips head that is easy to drive
  • Zinc-plating to protect the steel against rust & corrosion for long life!
Bestseller No. 18
Bestseller No. 19
Hillman Group 90413 1/4-20-Inch x 2-1/2-Inch Combo, 100-Pack Zinc Round Head Combination Machine...
  • Use to fasten metal parts together
  • Zinc finish for moderate corrosion protection
  • Fasten with screwdriver to reduce risk of over-tightening
Bestseller No. 20
The Hillman Group 101146 1/4-20-Inch x 3-Inch Flat Head Phillips Machine Screw, 100-Pack, zinc
  • Fasten With A Screwdriver To Reduce The Risk Of Over-Tightening To Protect The Screw And Fastened Material
  • If Nuts Are Needed, Use With Nuts Of The Same Finish And Threading For Proper Fit
  • Zinc Plated

How To Buy Best 1/4-20 machine screw

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And, where would you get all this kind of information? We are absolutely sure that you may have many more questions, and the best way to quench your thirst is to get them all solved from various online resources. Sources may be anything such as online forums, word-of-mouth, rating websites, buying guides, and product reviews. Proper research is essential before buying the best 1/4-20 machine screw for yourself. Ensure that you are reading from highly reliable, trustworthy websites or any other sources.

We offer a buying guide for 1/4-20 machine screw, and we provide 100% genuine and unbiased information. We make use of Big Data and AI data to proofread the information. How has this buying guide been made? We have a uniquely designed set of algorithms, which enable us to make a list of top 20 1/4-20 machine screw that are available in the marketplace these days. Our technology of bringing together a list depends on the factors such as:

  1. Brand Value
  2. Features & Specifications
  3. Product Value
  4. Customer Reviews & Ratings
  5. Quality and Durability

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