12 best set screws
Set screws, also known as grub screws, are a type of threaded fastener used in various industrial and mechanical applications. These screws are typically small and feature no head like traditional screws. Instead, they have a fully threaded shaft with a flat or concave end. Here's what you need to know about set screws:
Purpose: Set screws are primarily used to secure an object within or against another object. They are commonly employed to lock components onto a shaft or within a hole, preventing relative motion. This is often achieved by tightening the set screw against a flat or recessed surface, creating a clamping effect.
Types: Set screws come in different types, including cup point, cone point, flat point, and dog point. Each type has a specific design of the screw's tip, which affects its gripping and holding capabilities.
- Cup Point: Features a cup-shaped indentation at the end, providing a firm grip and preventing marring of the mating surface.
- Cone Point: Has a pointed tip that can create a very tight and secure connection.
- Flat Point: Features a flat, level end that exerts pressure evenly across the surface it contacts.
- Dog Point: Has a cylindrical, slightly rounded tip that is often used for aligning and securing parts.
Materials: Set screws are typically made from various materials, including steel, stainless steel, brass, and nylon. The choice of material depends on factors like the application environment, load-bearing requirements, and corrosion resistance.
Applications: Set screws find use in a wide range of applications, such as securing pulleys or gears to shafts, holding handles onto tools, locking components in place on machinery, and more. They are commonly used in the manufacturing, automotive, construction, and aerospace industries.
Installation: Proper installation of set screws is crucial for their effectiveness. They should be tightened using an appropriate Allen wrench or hex key, ensuring that they make firm contact with the surface they are securing. Over-tightening can damage threads and mating surfaces.
Adjustment and Removal: Set screws are designed to be easily adjusted and removed when needed.Loosening the set screw allows for adjustments or disassembly of the components it secures.
In summary, set screws are essential fasteners used to secure and immobilize components in various mechanical and industrial applications. Their design and material selection depend on the specific requirements of the application, and they play a critical role in ensuring the stability and functionality of machinery and equipment.
Below you can find our editor's choice of the best set screws on the market
Neiko 50484A Internal Hex Allen Set Screw Assortment | Full Steel Construction | Includes Coarse & Fine Thread Screws | 200 Piece, 5/32" x 3/16"/1/4" x 3/8"
Neiko
Product description
Socket set assortment in fine and coarse threads, 200 pcs in all, fine threads in 3 sizes, coarse threads in 9 sizes, Allen head sockets
- [QUALITY]: Made of steel construction that will not strip out as easily as plastic or aluminum.
- [FEATURES]: Most common SAE standard sizes and is suitable for shop, garage or home use.
- [CONVENIENCE]: This set includes a hard plastic case with an organization chart on the inside lid for easy identification.
- [INCLUDES]: 5/32" X 3/16", 3/8" X 3/8" Fine, 5/16" X 3/8" Fine, 5/16" X 3/8", 3/8" X 3/8", 5/16" X 1/2", 1/8" X 3/16", 3/16" X 1/4", 1/4" X 1/4" Fine, 1/4" X 1/4", 3/8" X 1/2", 1/4" X 3/8".
- [BONUS]: Includes both fine threads in 3 sizes and coarse threads in 9 sizes.
User questions & answers
| Question: | Will any of these fit belt buckles |
| Answer: | I bought this assortment to fix missing hex set screws in an old heathkit Marauder transtmiiter, and they worked Great! There is quite an assortment. Not sure it the size you need is in this assortment Richard, but good to have on hand. I could not find them anywhere, not even at a ACE hardware. |
| Question: | How have these held up? I misplaced the old screws for my gas block and need to replace them with something reliable |
| Answer: | Ive used two small ones on an aluminum pulley. Threads seem fine. I dont think youll have issues with using these on a gas block. |
| Question: | What sizes come in this kit |
| Answer: | Sizes listed below for this kit10pc- 5/32" x 3/16"10pc- 3/8" x 3/8" fine20pc- 5/16" x 3/8" fine30pc- 5/16" x 3/8"10pc- 3/8" x 3/8"20pc- 5/16" x 1/2"10pc- 1/8" x 3/16"10pc- 3/16" x 1/4"20pc- 1/4" x 1/4" fine30pc- 1/4" x 1/4"10pc- 3/8" x 1/2"20pc- 1/4" x 3/8" |
| Question: | Let's say i had a shower handle that needs the hex screw drilled out. i think i can replace with a 3/16x1/4 hex. what would the tap size be |
| Answer: | A 1/4-20 threaded hole requires a 13/64 drilled hole prior to cutting your threads with a 1/4-20 tap. There are charts for this on the net. Be sure to identify your thread and pitch of your screw, prior to looking up your drilled hole diameter, and drilling. Good luck. |
Product features
Designed to be Versatile
Whatever your DIY project is, Neiko 50484A Internal Hex Allen Set Screw Assortment is surely something you can rely on. This set of Hex Allen Screws are made for the serious tool user, providing well-designed instruments and hassle-free usage for applications such as deck building, wood framing, installing plywood subfloor, building crates and much more.
Sturdy Construction
The Neiko 50484A Internal Hex Allen Set Screw Assortment includes most common SAE standard sizes so you can easily replace a screw. With 200 pieces, this set is suitable for shop, garage or home use. The heat treated and hardened clips act as an ideal replacement for a strong hold.
Prime-Line 9182932 Socket Set Screws, #10-32 X 1/4 in, Black Oxide Coated Steel, 25-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: #10-32 X 1/4 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9183654 Socket Set Screws, 1/4 in-20 X 1/4 in, Black Oxide Coated Steel, 25-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: 1/4 inch-20 X 1/4 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
User questions & answers
| Question: | Why this do not fit into standard tripod 1/4"-20 thread? The thread on this one appears to be too fine. Which one should I get |
| Answer: | Unknown. The threads are set at 1/4" diameter with 20 threads per inch x 1?4"L. Are you sure your tripod does not have a metric thread? |
VIGRUE M3 M4 M5 Alloy Steel Hex Socket Button Head Cap Nuts Flat Washers Kit Black Screw Assortment(570 PCS)
VIGRUE
- Made from high quality 10.9 grade alloy steel known for its dependable and rigid strength as well as its corrosion resistant quality. This type of steel is able to withstand drastic weather and temperature changes including placement within extremely humid areas. These qualities ensure hard-wearing making these screws and nuts virtually indestructible.
- Serves a wide range of use and purpose from furniture repair and plumbing to woodwork and other diy projects. Ideal for use by a variety of workers and repairmen from plumbers to assemblymen both professional and amateur, even diyers can opt to use it
- Comes with a sturdy plastic organizer made from high quality plastic to efficiently and effectively bear the weight of the whole package.
- Package quantity: 570Pcs screw and nuts included(m3, M4, M5); the surface of the 10.9-Class hexagon socket screws is becoming hardness and more stronger after heat treatment and with good feature of anti-oxidation, high temperature resistance, anti-corrosion.
- Guaranteed not only is it made from high-quality elements this kit also promotes environmental protection and is guaranteed to be mercury-free and toxic-free generally making it poison-free
User questions & answers
| Question: | For black screws, are they made of Alloy Steel ? Good and reliable screws |
| Answer: | Hi, these screws are made of alloy steel. If you have any quality problem, welcome to contact us, All VIGRUE products have 12 months replacement and refund guarantee. |
| Question: | Will screws and nuts easy to rust |
| Answer: | Hi, these screws and nuts are made of alloy steel, and covered with anti-rust oil and pass the 72h salt spray test. |
| Question: | Are these flat washers made of 304 stainless steel material |
| Answer: | Hi, screws and nuts and washers are made of alloy steel, and screws are coated with anti-rust oil and pass the 72h salt spray test. If you receive a screw set and find screws are covered with oil, don't worry about it. |
| Question: | Compared with other items of screws, I want to know the quality of the black screws and nuts |
| Answer: | It was Made of high quality 12.9 Grade Alloy Steel (Raw material).They have superior features of rust resistance, high toughness, wear resistance, corrosion resistance, and the excellent of oxidation resistance, which can ensure to be used for a long time. |
Product features
VIGRUE High Quality M3 M4 M5 Alloy Steel Hex Socket Head Cap Screws Nuts Set 570pcs
- M3x6mm/8mm/10mm/12mm/16mm/20mm screws with matching nuts and flat washers.
- M4x6mm/8mm/10mm/12mm/16mm/20mm screws with matching nuts and flat washers.
- M5x6mm/8mm/10mm/12mm/16mm/20mm screws with matching nuts and flat washers.
- Professional assortment and sizes to meet all your demands, which will bring a easier and more convenient working environment.
VIGRUE Screws characteristics:
- Made of high quality 10.9 Grade Alloy Steel (Raw material).
- They have superior High hardness, not easy to fracture feature.
- High Hardness ; Premium material; Corrosion Resistance; Quality Product.
- Friendly Metrial : Not only is it made from high-quality elements this kit also promotes environmental protection and is guarranted to be mercury-free and toxic-free generally making it poison-free.
Hex Wrenches:
- M3 Hex wrench∅1.5mm Size:16*45mm M4 Hex wrench∅2.5mm Size:19*55mm M5 Hex wrench∅3.0mm Size:23*57mm
- Warm Tips: Products contain small parts, please do not let children play.
Prime-Line 9184411 Socket Set Screws, 3/8 in-16 X 1/2 in, Black Oxide Coated Steel, 10-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: 3/8 inch-16 X 1/2 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9183673 Socket Set Screws, 1/4 in-20 X 3/8 in, Black Oxide Coated Steel, 25-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: 1/4 inch-20 X 3/8 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9186564 Socket Set Screws, Metric, M8-1.25 X 12MM, Black Oxide Coated Steel, 10-Pack
PRIME-LINE
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: M8-1.25 X 12MM
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9184126 Socket Set Screws, 5/16 in-18 X 3/4 in, Grade 18-8 Stainless Steel, 10-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: 5/16 inch-18 X 3/4 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9182587 Socket Set Screws, #8-32 X 1/8 in, Black Oxide Coated Steel, 25-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: #8-32 X 1/8 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9183727 Socket Set Screws, 1/4 in-20 X 3/4 in, Grade 18-8 Stainless Steel, 10-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: 1/4 inch-20 X 3/4 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
Prime-Line 9182359 Socket Set Screws, #6-32 X 5/16 in, Black Oxide Coated Steel, 25-Pack
Product description
Socket set cap screws have cup points that produce a thin edge that digs into hard surfaces for a secure hold. This fastener is headless and contains an internal hex drive. Use an Allen wrench (hex key) to secure with required torque as needed. Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. Length is measured from the top of the fastener to the base of the cup point.
- Size: #6-32 X 5/16 inch
- Headless screw that sits flush or below the surface once installed
- Internal socket drive requires Allen wrench (hex key) to install
- Installs into an internally threaded hole to hold an object into place
- Often used in machinery to secure gears to shafts
The Hillman Group The Hillman Group 778 Zinc SAE Socket Set Screw 1/2-20 x 1/2 in. 8-Pack
Product description
A Set Screw is a type of screw generally used to secure an object within or against another object. Set screws are most often headless, meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object.
From the Manufacturer
A Set Screw is a type of screw generally used to secure an object within or against another object. Set screws are most often headless, meaning that the screw is fully threaded and has no head projecting past the major diameter of the screw thread. The set screw passes through a threaded hole in the outer object and is tightened against the inner object to prevent it from moving relative to the outer object.
- Ideal for use in confined areas where the head needs to be flush or below the surface
- Fully threaded headless screw with recessed hex drive
- Great for mechanical application
- Country of Origin: China
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