M3–M12 Hex Socket Spring Ball Plunger Grub Set Screws Grade 12.9
M3–M12 Hex Socket Spring Ball Plunger Grub Set Screws Grade 12.9
Details
JARBLUE M3–M12 Hex Socket Spring Ball Plunger Grub Set Screws
Upgrade your mechanical assemblies with these precision-engineered Spring Ball Plunger Grub Set Screws from JARBLUE. Available in sizes M3, M4, M5, M6, M8, M10, and M12, these headless set screws feature an internal hex (Allen) socket drive and a spring-loaded ball tip — ideal for positioning, detenting, and indexing applications across a wide range of projects.
Key Features
- Grade 12.9 High Strength: Exceptional tensile strength for demanding industrial and DIY applications.
- Spring Ball Plunger Tip: Built-in spring-loaded ball delivers reliable detent action, keeping components securely in position during operation.
- Hex Socket (Allen Key) Drive: Easy installation and removal with a standard Allen/hex key — no slippage, clean drive.
- Black Finish: Sleek black oxide-style finish for a professional look and added corrosion resistance.
- Low Carbon Steel Construction: Durable material selected for strength and machinability, suitable for machine screws and mechanical fastening tasks.
- CE & RoHS Certified: Compliant with CE and RoHS standards — free from high-concern chemicals.
- Wide Size Range: Available in M3, M4, M5, M6, M8, M10, and M12 — sold in packs of 2 or 10 to suit your project needs.
Specifications
| Brand | JARBLUE |
| Material | Low Carbon Steel |
| Drive Style | Hex Socket (Allen) |
| Screw Type | Machine / Grub Set Screw with Spring Ball Plunger |
| Sizes Available | M3, M4, M5, M6, M8, M10, M12 |
| Grade | 12.9 |
| Finish | Black |
| Certifications | CE, RoHS |
| Country of Origin | Made in China (Mainland) |
Common Applications
- Positioning and detenting in mechanical assemblies
- CNC machine fixtures and jigs
- Robotics and automation components
- Shaft collars, pulleys, and gear locking
- DIY electrical and engineering projects
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Frequently Asked Questions
Q: What sizes are available for the JARBLUE Spring Ball Plunger Grub Set Screws?
A: These hex socket spring ball plunger grub set screws are available in M3, M4, M5, M6, M8, M10, and M12 thread sizes, giving you versatile options for a wide variety of mechanical and DIY applications.
Q: What tool do I need to install these grub set screws?
A: A standard Allen (hex) key matching the screw size is all you need. The internal hex socket drive makes installation and removal straightforward without slipping or cam-out.
Q: What is the purpose of the spring ball plunger tip on these set screws?
A: The spring-loaded ball tip creates a detent action, holding components securely in a set position while still allowing controlled movement or repositioning when needed — ideal for indexing, positioning, and locking applications in mechanical assemblies.
Q: Are these screws compliant with safety standards?
A: Yes, these JARBLUE grub set screws are CE and RoHS certified, confirming they meet European safety requirements and are free from restricted hazardous substances.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.
Materials + Care
We prioritize quality in selecting the materials for our items, choosing premium fabrics and finishings that ensure durability, comfort, and timeless appeal.
Shipping + Returns
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