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The Best 4-40 Set Screw of 2022 – Reviews & Buying Guide

After hours researching and comparing all models on the market, we find out the Best 4-40 Set Screw of 2022. Check our ranking below.

2,336 Reviews Scanned

Rank No. #1
BAIRONG 25pcs 4-40 x 1/8' Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
BAIRONG 25pcs 4-40 x 1/8" Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
  • High-quality materials: The fixing screws and wrenches are made of stainless steel, not rusty, pollution-free, and durable.
  • Fixing screw: Coarse thread CUP POINT SS hexagon socket flat head screw. The head is flat and smooth, the force is even, and the fastening effect is better.
  • Scope of application: Fully threaded headless screws with recessed hex driver, suitable for mechanical applications.
  • Product function: It exerts compressive force or clamping force through the bottom tip protruding from the hole.
  • Package contains: 25 x fixing screw + 1 x hex wrench.
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Rank No. #2
4-40 x 1/8' Socket Set Screws Cup Point Stainless Steel 10 Pack with .050 Hex Key Wrench (1/8' Length)
4-40 x 1/8" Socket Set Screws Cup Point Stainless Steel 10 Pack with .050 Hex Key Wrench (1/8" Length)
  • 4-40 x 1/8” Coarse Thread CUP POINT SS Socket Set Grub Screws.
  • You Will Receive 10 Screws and One Matching .050 Hex Allen Wrench.
  • Made Out of High Quality 304 "18-8 / A2" Grade Stainless Steel.
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Rank No. #3
PSCCO 50PCS Stainless Steel 4-40 x 1/8' Cup Point Socket Set Screws with 1.27mm Hex Key Wrench
PSCCO 50PCS Stainless Steel 4-40 x 1/8" Cup Point Socket Set Screws with 1.27mm Hex Key Wrench
  • Material grade: 12.9 level. Size: 4#-40*1/8.
  • Made of 12.9 alloy steel, cup-shaped pointed sleeve with hexagon head Grub screw. Usually used to keep pulleys, gears or other parts rotating relative to the shaft.
  • These headless screws have a hex socket in which a hex wrench is inserted to tighten and loosen the screw.
  • These set screws are headless screws, usually called blind screws or flat head screws. Set screws are usually used to fix an object within or relative to another object, such as a pulley or gear to a shaft.
  • Contains products: 50 x 4-40 x 1/8" Cup Point Socket Set Screws with a matching 1.27mm hexagon wrench.
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SaleRank No. #4
uxcell a15120300ux0116 4#-40x1/8inch Hex Socket Set Cap Point Grub Screws Black 100pcs (Pack of 100)
uxcell a15120300ux0116 4#-40x1/8inch Hex Socket Set Cap Point Grub Screws Black 100pcs (Pack of 100)
  • Drive Type: Hex Socket; Head Style: Flat Head; Material: 12.9 Alloy Steel
  • Package Content: 100(+/-2%)pcs x Grub Screws; Product Name: Grub Screws
  • Thread Size: 1/8"(L); Weight: 8g
  • Main Color: Black; Total Length: 1/8"(L)
  • Thread Diameter: 4#; Thread Counts: 40
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Rank No. #5
VIGRUE 390Pcs #4-40 to 3/8'-16 SAE Hex Allen Head Socket Set Screws Grub Screw Bolts Assortment Kit, Carbon Steel Internal Hex Drive Cup-Point Screws with 7pcs Hex Wrenches
VIGRUE 390Pcs #4-40 to 3/8"-16 SAE Hex Allen Head Socket Set Screws Grub Screw Bolts Assortment Kit, Carbon Steel Internal Hex Drive Cup-Point Screws with 7pcs Hex Wrenches
  • SAE STANDARD SIZE: VIGRUE 390 SAE set screws kit contains 7 specifications (19 sizes total) with 7 matching wreches for easy apply, which generally includes 4-40, 6-32, 8-32, 10-24, 1/4"-20, 5/16"-18, 3/8"-16, packed in a plastic box, easy to install
  • FINE WORKMANSHIP: All the grub screws with coarse threads, have a cup point with a thin edge wich digs into the contact surface for a secure hold.
  • DURABLE MATERIAL: made of carbon steel set screw kit, with excellent anti-rust and corrosion resistance property, and won’t slip out easily.
  • WIDE APPLICATIONS: Good replacement for your kit, suitable for door handles, faucet, light fixture, knobs, armament repair, plumber and other small repairs around the shop, garage or home.
  • WORRY FREE AFTER SALE SERVICE: Enjoy lifetime service from the date of purchase. If you have any question, please feel free to contact us. We will handle it within 24 hours until you are satisfied.
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Rank No. #6
DGBRSM 25pcs 4-40 x 1/2' Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
DGBRSM 25pcs 4-40 x 1/2" Stainless Steel Allen Head Hex Hexagon Socket Set Screws Cup Point with Hex Key Wrench
  • High-quality materials: The fixing screws and wrenches are made of stainless steel, not rusty, pollution-free, and durable.
  • Fixing screw: Coarse thread CUP POINT SS hexagon socket flat head screw. The head is flat and smooth, the force is even, and the fastening effect is better.
  • Scope of application: Fully threaded headless screws with recessed hex driver, suitable for mechanical applications.
  • Product function: It exerts compressive force or clamping force through the bottom tip protruding from the hole.
  • Package contains: 25 x fixing screw + 1 x hex wrench.
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Rank No. #7
Keadic 247Pcs Stainless Steel Internal Hex Drive Cup-Point Screws Assortment Kit with Hex Wrenches, 4#-40 × 1/8 to 3/8-16 × 3/8 Set Screws for Door Handles, Faucet, Light Fixture (19 Sizes)
Keadic 247Pcs Stainless Steel Internal Hex Drive Cup-Point Screws Assortment Kit with Hex Wrenches, 4#-40 × 1/8 to 3/8-16 × 3/8 Set Screws for Door Handles, Faucet, Light Fixture (19 Sizes)
  • 🥇 1. PACKAGE CONTENT --- Including 19 different sizes 304 stainless steel set screws, total 240Pcs: 4#-40*1/8, 4#-40*3/16, 4#-40*1/4, 4#-40*5/16, 6#-32*1/8, 6#-32*3/16, 6#-32*1/4, 6#-32*5/16, 8#-32*3/16, 8#-32*1/4, 8#-32*5/16, 10#-24*1/4, 10#-24*5/16, 10#-24*3/8, 1/4-20*5/16, 1/4-20*3/8, 5/16-18*5/16, 5/16-18*3/8, 3/8-16*3/8. And there are also 7Pcs hex drive nickel plated included: M1.25, M1.5, M2, M2.5, M3, M4, M5.
  • 🥇 2. GOOD QUALITY STAINLESS STEEL--- Our socket head set screws are made of high quality 304 stainless steel material, which have higher hardness and better corrosion-resistance, will not get rust or break even used in harsh environment, with longer time for service. Besides, they also have deep and sharp thread with even force, will not slip out during rotating.
  • 🥇 3. STRONG COMPATIBILITY --- Our 304 Stainless steel internal hex drive cup-point set screws assortment kit are suitable for door handles, faucet, light fixture, knobs, armament repair, plumber and other small repairs around the shop, garage or home and so on.
  • 🥇 4. COMPLETE GRUB SCREWS KIT --- We not only provide you with almost all sizes set screws for replacing the break or rust ones, but prepare 7 different sizes of hex wrenches for you, so it will save your time and money to buy other parts from local grocery store.
  • 🥇 5. WARM TIPS --- We are full of confidence about our products, and believe that you will not regret it if you got them. Please feel free to contact me if you come across any issues during use, we provide 24 hr service time for you.
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Rank No. #8
Hilitchi 100Pcs SAE Stainless Hex Allen Head Socket Set Screws Grub Screw Bolts Assortment Kit Internal Hex Drive Cup-Point Screws #4-40 x 1/8
Hilitchi 100Pcs SAE Stainless Hex Allen Head Socket Set Screws Grub Screw Bolts Assortment Kit Internal Hex Drive Cup-Point Screws #4-40 x 1/8
  • ➤[ 304 STAINLESS STEEL]-----These set screws are made of high-quality 304 stainless steel. No burr, Work Well. Tough enough to survive severe job-sites in high temperature, freezing and humid weather.
  • ➤[PREMIUM PRODUCT]-----Silver #4-40(Thread) x 1/8"(Length) Hex Socket Set Screws. Our product has deep thread, smooth surface and sharper screw teeth that will securely work without slipping.
  • ➤[100PCS SET SCREWS +1PC WRENCH]-----Package includes 100pcs set screws & 1 bonus corresponding hex drive key, offering ease of use by hand. For more size detail, please see the pictures.
  • ➤[PROVIDE CONVENIENCE]-----We have prepared you with A great variety of SAE sizes, individually sold as a group to suit your different needs. It can work well in almost all your mechanical projects and applications.
  • ➤[QUALITY AFTER-SALE SERVICE]-----We are highly confident with our products and your satisfaction is our Top Priority. If you have any questions, please come to us, we would reply within 12-hour. We guarantee to solve all the problems.
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Rank No. #9
LUORNG 25pcs 4-40 x 1/4' Allen Head Hex Hexagon Socket Set Screws Stainless Steel Cup Point Grub Screw Set Bolt with 1 Piece Hex Key Wrench
LUORNG 25pcs 4-40 x 1/4" Allen Head Hex Hexagon Socket Set Screws Stainless Steel Cup Point Grub Screw Set Bolt with 1 Piece Hex Key Wrench
  • Fixing screw: Coarse-toothed CUP POINT SS socket head flat head screw, with flat and smooth head, deep thread, uniform force, good tightening effect, and not easy to slip during rotation.
  • High-quality material: The fixing screw and wrench are made of high-quality 304 stainless steel, which combines nickel-chromium, acid resistance, high hardness, no rust in humid environment, and strong oxidation resistance. Built to last. The material is environmentally friendly and pollution-free.
  • Scope of application: Widely used in mechanical equipment, civil hardware and compact instruments, such as gear fixing, cam fixing, household door handles, hardware faucets, towel racks, etc.
  • Function: It is usually used to fix the object without using a nut, and it can be installed concealed.
  • The package contains: Fixing screw x 25 + Hex key x 1. Multipurpose hexagon socket head set screw, you can easily drive with a hexagon wrench, easy to operate.
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Rank No. #10
LUORNG 25pcs 4-40 x 1/8' Allen Head Hex Hexagon Socket Set Screws Stainless Steel Cup Point Grub Screw Set Bolt with 1 Piece Hex Key Wrench
LUORNG 25pcs 4-40 x 1/8" Allen Head Hex Hexagon Socket Set Screws Stainless Steel Cup Point Grub Screw Set Bolt with 1 Piece Hex Key Wrench
  • Fixing screw: Coarse-toothed CUP POINT SS socket head flat head screw, with flat and smooth head, deep thread, uniform force, good tightening effect, and not easy to slip during rotation.
  • High-quality material: The fixing screw and wrench are made of high-quality 304 stainless steel, which combines nickel-chromium, acid resistance, high hardness, no rust in humid environment, and strong oxidation resistance. Built to last. The material is environmentally friendly and pollution-free.
  • Scope of application: Widely used in mechanical equipment, civil hardware and compact instruments, such as gear fixing, cam fixing, household door handles, hardware faucets, towel racks, etc.
  • Function: It is usually used to fix the object without using a nut, and it can be installed concealed.
  • The package contains: Fixing screw x 25 + Hex key x 1. Multipurpose hexagon socket head set screw, you can easily drive with a hexagon wrench, easy to operate.
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Last update on 2022-10-17 / Affiliate links / Images from Amazon Product Advertising API

How Do You Buy The Best 4-40 Set Screw?

Do you get stressed out thinking about shopping for a great 4-40 Set Screw? Do doubts keep creeping into your mind? We understand, because we’ve already gone through the whole process of researching 4-40 Set Screw, which is why we have assembled a comprehensive list of the greatest 4-40 Set Screw available in the current market. We’ve also come up with a list of questions that you probably have yourself.

We’ve done the best we can with our thoughts and recommendations, but it’s still crucial that you do thorough research on your own for 4-40 Set Screw that you consider buying. Your questions might include the following:

  • Is it worth buying an 4-40 Set Screw?
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We’re convinced that you likely have far more questions than just these regarding 4-40 Set Screw, and the only real way to satisfy your need for knowledge is to get information from as many reputable online sources as you possibly can.

Potential sources can include buying guides for 4-40 Set Screw, rating websites, word-of-mouth testimonials, online forums, and product reviews. Thorough and mindful research is crucial to making sure you get your hands on the best-possible 4-40 Set Screw. Make sure that you are only using trustworthy and credible websites and sources.

We provide an 4-40 Set Screw buying guide, and the information is totally objective and authentic. We employ both AI and big data in proofreading the collected information. How did we create this buying guide? We did it using a custom-created selection of algorithms that lets us manifest a top-10 list of the best available 4-40 Set Screw currently available on the market.

This technology we use to assemble our list depends on a variety of factors, including but not limited to the following:

  1. Brand Value: Every brand of 4-40 Set Screw has a value all its own. Most brands offer some sort of unique selling proposition that’s supposed to bring something different to the table than their competitors.
  2. Features: What bells and whistles matter for an 4-40 Set Screw?
  3. Specifications: How powerful they are can be measured.
  4. Product Value: This simply is how much bang for the buck you get from your 4-40 Set Screw.
  5. Customer Ratings: Number ratings grade 4-40 Set Screw objectively.
  6. Customer Reviews: Closely related to ratings, these paragraphs give you first-hand and detailed information from real-world users about their 4-40 Set Screw.
  7. Product Quality: You don’t always get what you pay for with an 4-40 Set Screw, sometimes less, and sometimes more.
  8. Product Reliability: How sturdy and durable an 4-40 Set Screw is should be an indication of how long it will work out for you.

We always remember that maintaining 4-40 Set Screw information to stay current is a top priority, which is why we are constantly updating our websites. Learn more about us using online sources.

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