Small Indexing Plunger with Circle Plastic Clamping Knob, M12 x 1.5 x 10mm, D29, pin6
PSK300-2912100608
Mini spring loaded pull pin, Tiny indexing plunger, Pop pin
Ergonomic micro design improves handling, especially for repetitive tasks. If an indexing plunger that pulls easily with one finger improves efficiency, Our mini plungers deliver: M8–M16 options, 4–10mm pins, a knob featuring a ring and four designs, and 7 color rings/discs. We also use wood fiber or oyster shell plastic to reduce waste. Taiwan CNC and mold technology ensure precise locking and wear resistance. ISO9001-certified, UJEN handles bulk or custom needs, excelling in medical devices, sports gear, automotive-aerospace, and semiconductor B2B realms.
Function
UJEN Mini Spring Pull Pins are ideal for applications requiring compact size, frequent adjustment, and quick fastening. Simply pull the compact knob upward to release the pin from its hole, adjust the component to your desired position, and release—the internal spring immediately re-engages the pin for precise positioning.
Additionally, this pull pin features a special knob design allowing manual rotation to tighten screws directly by hand, ensuring stable clamping and preventing component vibration or loosening without needing tools. Perfectly suited for fitness equipment, medical devices, mechanical assemblies, and furniture hardware.
Features
- RoHS REACH compliant.
- Pull and release process smoother.
- Thread is class 2.
- Flame-proof, heat-resistant, anti-UV properties.
- The head knob has a matte finish.
- The head knob does not hurt hands, no sharp angles or burrs.
- The knob is easy to tight with a hand. the best design of beauty and grip.
- The metal is shiny and detailed.
- Zinc plated metal, stable corrosion resistance.
- The fitting tolerance between metal parts is small, reducing sway.
- The rounded corner of the Plunger's front end increases smoothness of insertion.
- The chamfered front end of the screw makes assembly smoother and reduces wear on the mating end face.
Dimensions

Thread Size
- M12 x 1.5
Thread Material
- Steel
Screw Length(mm/inch)
- 10 / 0.39
Plunger Diameter(mm)
- 6
Metal Finishing
- zinc plated with trivalent
External Diameter(mm)
- 29~32
External Height(mm)
- 29~32
External Material
- PA6+GF
External Shape
- Circle
Gallery
- Customized service for Bolt, Screw & Nut (metal parts)
- The center pin can be fitted with an anti-scratch pad to minimize scratches on the surface of the locked object.
- Optional accessories of knobs, handles, pull pins
- Related Products
Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M12 x 1.5 x 10mm, D29, pin6
PSK300F-2912100608
Lightweight format includes a rest catch that eliminates constant pull tension. If your small...
Details Add to ListSmall Indexing Plunger with Circle Plastic Clamping Knob, rest position, M12 x 10mm, D29, pin6
PSK300F-291210N0608
Eliminates the need for a separate clamp or tool to keep the pin retracted. In small medical...
Details Add to ListSmall Indexing Plunger with Circle Plastic Clamping Knob, M12 x 10mm, D29, pin6
PSK300-291210N0608
A go-to solution for engineers needing reliable mini spring plungers on short notice. If you want...
Details Add to List- FAQ
How to choose the right hand-fasten screw for your needs?
Selecting the suitable hand-tighten screw involves considering several factors, including the application environment (such as temperature, humidity, chemical...
Can I request customized materials or colors for hand-fasten screws?
Yes, we offer comprehensive customization services, including material selection, color, size, and surface treatment for hand-turned screws. Whether you need...
What quality assurances come with purchasing UJEN's thumb screws?
We provide comprehensive quality guarantees for all our handle screws. Every batch of handle screws undergoes strict quality testing to ensure it meets...
How are order logistics and delivery issues handled after placing an order?
We cooperate with several professional logistics companies to ensure safe and rapid delivery of products to our clients. Regardless of your location around...
If we need technical support, what assistance can UJEN provide?
We offer comprehensive technical support, including knob screw selection advice, installation guidance, and performance optimization. You can contact our technical...
Small Indexing Plunger with Circle Plastic Clamping Knob, M12 x 1.5 x 10mm, D29, pin6 | Custom Hand Screws, Knobs & Handles Manufacturer | UJEN
UJEN's tool-free fastening solutions and custom adjustable handles are specifically designed for fitness equipment requiring frequent user adjustments. Our 45-year expertise in hand screw manufacturing ensures reliable, comfortable, and aesthetically pleasing products that enhance your equipment's market appeal. Contact us for customized solutions that streamline your production process.
UJEN's core strength lies in transforming customer concepts into market-ready products through innovative design-to-production services, technical consulting, and engineering solutions. Our tool-free fastening innovations and customization capabilities enable manufacturers to differentiate their products while reducing assembly time and improving end-user experience. Partner with UJEN to elevate your product competitiveness with premium hand screws and custom knob solutions backed by four decades of manufacturing excellence and commitment to quality craftsmanship.







