Small Indexing Plunger with Circle Plastic Clamping Knob, M10 x 1.0 x 22mm, D25, pin5
PSK300-2510220507
Mini spring loaded pull pin, Tiny indexing plunger, Pop pin
Achieve stable latching in smaller hardware with this compact spring mechanism. When medical or sporting equipment has limited interior space, Our compact plungers (M8–M16) with 4–10mm pins fit precisely. The knob provides a ring plus four styles, with 7 color discs/rings to enhance looks, and wood fiber or oyster shell plastic to reduce waste. Taiwan CNC and mold manufacturing assure tight tolerances and durability, supported by ISO9001 management. Suitable for automotive-aerospace, semiconductors, or AV setups in B2B contexts, these mini plungers excel in efficiency and customization.
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
- M10 x 1.0
Thread Material
- Steel
Screw Length(mm/inch)
- 22 / 0.86
Plunger Diameter(mm)
- 5
Metal Finishing
- zinc plated with trivalent
External Diameter(mm)
- 25~28
External Height(mm)
- 25~28
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
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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...
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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?
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Small Indexing Plunger with Circle Plastic Clamping Knob, M10 x 1.0 x 22mm, D25, pin5 | 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.







