Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M8 x 1.0 x 6mm, D21, pin4 | Achieve Ergonomic Efficiency with Adjustable Handles for Machinery
A mini plunger with a built-in rest detent, freeing both hands during alignment. If you need compact plungers for tight spaces, UJEN offers M8, M10, M12, M16 plus 4–10mm pin sizes. The knob features a circular ring and four designs, with seven color rings/discs, now enhanced by a “stay-pulled” function: once pulled and rotated, it remains unlocked so both hands are free. Taiwan-based CNC and mold production ensures tight tolerances and durability, with wood fiber or oyster shell plastics for eco needs. ISO9001 workflows let UJEN serve medical, automotive-aerospace, sports, semiconductor, and AV B2B markets. UJEN is an ISO 9001 certification Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M8 x 1.0 x 6mm, D21, pin4, Spring loaded pull pin, Indexing plunger, Pop pin manufacturer from Taiwan since 1994. UJEN Development Co., Ltd., with over 45 years of expertise, specializes in manufacturing precision hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers. As an ISO 9001:2015 certified company, we offer custom solutions and professional mold-making capabilities to enhance product functionality and brand value. Our commitment to quality and innovation ensures we meet the specific needs of our customers in various industries. UJEN is a leading manufacturer of high-quality hand screws in the screw parts industry. With over 40 years of expertise in plastic injection mold development, we have specialized in crafting precision rotary knobs and handles. We offer technical consulting services and customized design solutions to provide full-service from design to production.
Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M8 x 1.0 x 6mm, D21, pin4
PSK300F-2108060406
Spring loaded pull pin, Indexing plunger, Pop pin
A mini plunger with a built-in rest detent, freeing both hands during alignment. If you need compact plungers for tight spaces, UJEN offers M8, M10, M12, M16 plus 4–10mm pin sizes. The knob features a circular ring and four designs, with seven color rings/discs, now enhanced by a “stay-pulled” function: once pulled and rotated, it remains unlocked so both hands are free. Taiwan-based CNC and mold production ensures tight tolerances and durability, with wood fiber or oyster shell plastics for eco needs. ISO9001 workflows let UJEN serve medical, automotive-aerospace, sports, semiconductor, and AV B2B markets.
Function
UJEN Mini Spring Pull Pins with Rest Position are designed specifically for rapid fastening, frequent adjustment, and convenient repositioning. Simply pull and rotate the top knob 30 degrees to maintain the pin in a fully disengaged (rest) position, allowing users the freedom to adjust components easily with both hands.
After repositioning, simply rotate the knob directly to re-engage the pin into the hole (new improved feature), eliminating the need for an additional pulling action. This innovative improvement significantly enhances operational efficiency.
Additionally, this mini pull pin enables quick hand-tightening by rotating the top knob manually, securely fastening components and effectively preventing vibration or looseness without tools. Widely used in fitness equipment, medical devices, mechanical assemblies, furniture hardware, and more, it provides a reliable solution for precise and rapid component adjustments.
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
- M8 x 1.0
Thread Material
- Steel
Screw Length(mm/inch)
- 6 / 0.23
Plunger Diameter(mm)
- 4
Metal Finishing
- zinc plated with trivalent
External Diameter(mm)
- 21~24
External Height(mm)
- 21~24
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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What is UJEN's core business?
UJEN specializes in the innovative design and manufacturing of hand knob screws and related hardware accessories. With over forty years of extensive experience,...
Can you give specific examples of innovation in UJEN's clamping knob screws?
Our innovation goes beyond the design of clamping knob screws, extending to technological improvements and material applications. For instance, our hand...
What role does customization play in UJEN's business?
UJEN understands the diversity of market demands; hence, we provide comprehensive customization services ranging from material selection, sizing, to surface...
How does UJEN ensure high product quality?
Quality is the lifeline of UJEN. From the selection of raw materials to production process control, every step is strictly executed according to international...
Why do UJEN's spring plungers stand out in the market?
Our spring plungers stand out not only due to their high quality and innovative design but also because of our deep understanding of customer needs and our rapid...
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Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M8 x 1.0 x 6mm, D21, pin4 | Achieve Ergonomic Efficiency with Adjustable Handles for Machinery
Based in Taiwan since 1994, UJEN DEVELOPMENT CO., LTD. expertise in manufacturing high-quality Small Indexing Plunger with Circle Plastic Clamping Knob, rest position, M8 x 1.0 x 6mm, D21, pin4, hand screws, knob screws, adjustable handles, grip knobs, and indexing plungers. Their commitment to customization and precision ensures each component, from hand screws to indexing plungers, meets rigorous standards. This dedication positions UJEN as a leader in supplying durable and reliable industrial components to global markets.
UJEN Development Co., Ltd. is a leading manufacturer of precision-engineered hand screws, knob screws, plastic knobs, adjustable handles, and indexing plungers for a variety of industrial needs. Our 45-year legacy, combined with ISO 9001:2015 certification, underscores our commitment to quality, innovation, and customer satisfaction. Specializing in custom solutions, we excel in professional moldmaking, enhancing equipment functionality across industries.
UJEN has been offering customers high-quality hand screws for industrial machinery since 1994, both with advanced technology and 47 years of experiences, UJEN ensures each customer's demands are met.