grub screws
Headless Design for Flush Mounting
Secure Set Screws That Stay Put
Precision Machined for Exact Positioning
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Your Global Partner forgrub screws That Hold, From Prototype to Production
When you need durable sheet metal screws, you need a partner who delivers—every time. Sinsun specializes in precision-made screws, backed by our own factory and global supply chain. Let’s build something solid together.
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imperial grub screws
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small grub screws
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dog point grub screw
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grub screw allen key
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cone point grub screw
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cup point grub screw
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hex grub screw
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ball grub screw
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tiny grub screws
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grub screw flat point
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Stainless steel grub screws
Stainless steel grub screws from Sinsun are made of corrosion-resistant stainless steel. This material ensures durability in various environments without rusting. They are typically hardened to specific strength grades for reliable fastening in assemblies where the screw is not exposed. These screws are commonly used in machinery, fixtures, and precision equipment for securing components onto shafts or inside threaded holes
Brass grub screws
Brass grub screws from Sinsun are made from brass alloy, which provides good corrosion resistance, particularly in water and atmospheric conditions. Being a non-magnetic and non-sparking material, they are suitable for use in electrical components, plumbing fittings, and marine environments. Their primary use is in applications where steel screws could cause galvanic corrosion or where specific non-magnetic properties are required.
Titanium grub screw
Sinsun's titanium grub screws are made from titanium alloy, offering a high strength-to-weight ratio and excellent corrosion resistance. They are non-magnetic and suitable for demanding applications in aerospace, medical equipment, and chemical processing. These screws are used where a combination of strength, light weight, and resistance to harsh environments is required.
Plastic grub screw
Sinsun plastic grub screws are injection-molded from POM material with Rockwell R120 hardness, providing excellent chemical resistance and electrical insulation. These non-magnetic screws feature precise threads for secure positioning in sensitive applications like medical devices, food processing equipment, and electronic assemblies where metal contact must be avoided.
Cold-rolled threads with uniform 0.8mm pitch maintain consistent torque transmission and prevent thread deformation under 45 Nm installation force.
Case-hardened surface reaches HRC 48-52 hardness while maintaining ductile core, providing wear resistance without brittleness in high-stress applications.
Zinc-nickel plating with 5-8μm thickness achieves 500+ hours neutral salt spray test performance, ensuring corrosion protection in harsh environments.
Multiple drive types include hex socket, slotted, and external hex designs, all manufactured to ISO 4026-4028 standards for reliable tool engagement.
Thread Size (M) |
Thread Pitch (mm) |
Allen Key Size (mm) |
Recommended Tap Drill Size (mm) |
M2 |
0.4 |
1.5 |
1.6 |
M2.5 |
0.45 |
2 |
2.1 |
M3 |
0.5 |
2 |
2.5 |
M4 |
0.7 |
2.5 |
3.3 |
M5 |
0.8 |
3 |
4.2 |
M6 |
1 |
4 |
5 |
M8 |
1.25 |
5 |
6.8 |
M10 |
1.5 |
6 |
8.5 |
M12 |
1.75 |
8 |
10.2 |
Important Notes:
Length (L): The length of the grub screw (e.g., M4x6) is a critical parameter and must be selected based on your specific application (e.g., shaft diameter, blind hole depth).
Point Types: Common point types include Flat, Cup, Cone, and Knurled, each suitable for different locking requirements.
Consult Manufacturer Specifications: Always confirm the exact dimensions with Sinsun technical data sheets, as these can vary.
Precision Grub Screws for Assembly
Sinsun grub screws offer consistent, flush-fit performance for all assembly tasks. With corrosion-resistant coatings and uniform threading, they ensure stable component locking across machinery, electronics, and hardware sectors, meeting international quality standards for export markets.
Grub Screw Applications: Sinsun Guide to Uses & Solutions
Discover the common applications of grub screws for securely locating and locking components in machinery, pulleys, gears, and precision assemblies. Learn how to select the right type for a reliable holding solution.
grub screws for taps
Sinsun plastic set screws for taps are manufactured from POM-H material with R120 Rockwell hardness, featuring precision-molded threads that maintain consistent torque up to 15 Nm. These corrosion-resistant screws are specifically designed for securing tap handles and plumbing fixtures in potable water systems, eliminating metal contamination risks while withstanding continuous water exposure. The non-conductive material prevents galvanic corrosion when installed in mixed-metal assemblies.
grub screws for door handles
Sinsun's grub screws are specifically designed to secure door handles onto their internal spindle or rose. Installed with a simple Allen key, they apply direct pressure to lock the handle firmly in place, preventing rotation or wobbling during daily use. Available in various thread sizes, drive types, and materials like stainless steel for corrosion resistance, they provide a durable and reliable fastening solution for both residential and commercial hardware, ensuring the handle remains securely attached over time.
set screw for shower handle
Sinsun's set screws are engineered to securely fasten shower handles to the valve stem. Installed with an Allen key, they provide a firm grip that prevents the handle from loosening or slipping during daily use. Manufactured from corrosion-resistant stainless steel, they are specifically suited for the high-humidity environment of a bathroom. These screws are made to precise specifications to ensure a reliable fit and long-term performance. With Sinsun, you get a durable component that maintains the integrity and function of your shower hardware.
set screw for faucet
Sinsun plastic set screws for faucets are manufactured from POM-H material with R120 Rockwell hardness, specifically designed to secure handle components on residential and commercial faucets. The precision-molded threads provide consistent torque transmission up to 15 Nm without stripping the mating threads in brass fittings. These screws offer complete corrosion resistance in wet environments while preventing galvanic corrosion when contacting dissimilar metals.
Multiple packaging solutions for flat head screws
Sinsun offers multiple packaging solutions for grub screws to meet different application needs:
Q: What is the main advantage of Sinsun socket head grub screws?
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A: The hex socket design allows high-torque installation (up to 35 Nm) for secure shaft locking in confined spaces.
Q: Where should Sinsun nylon grub screws be used?
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A: Ideal for electronic adjustments and plastic assemblies to prevent component damage and ensure electrical insulation.
Q: How do Sinsun headless set screws benefit designs?
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A: Their flush-mounted profile avoids interference in rotating parts while maintaining strong clamping force.
Q: What is the typical use for Sinsun M4 set screws?
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A: Commonly used in machinery and fixtures to secure pulleys, knobs, or collars onto 4 mm shafts.
Q: Why choose Sinsun grub screw sets?
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A: These kits include multiple sizes and point types (flat/cone/dog) for versatile use in maintenance and assembly tasks.
Q: What applications suit Sinsun 2.5 mm grub screws?
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A: Precision tasks like securing small gears and sensor mounts in compact devices or instruments.
Q: When are Sinsun slotted grub screws preferred?
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A: Suitable for low-torque applications where simple adjustment with a screwdriver is needed.
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