Round Head Pull Pin, Indexing Plunger, D34 D42 D50 D58 | UJEN DEVELOPMENT CO., LTD.
Round head pull pins, also known as round handle pull pins, are spring-loaded components designed for quick positioning and modular assembly. Widely used in medical equipment, monitor arms, sports gear, and mobile mechanisms, UJEN's version features a smooth, ergonomic head paired with a high-tension return spring. A simple pull enables fast engagement or disassembly, and the pin returns to its original position when released—enhancing both operational efficiency and safety.
The standard pin body is made of carbon steel with trivalent zinc plating, offering excellent corrosion resistance and environmental compliance. Custom materials such as stainless steel, alloy steel, or tool steel are also available based on strength requirements. The pull grip is molded from highly durable PA6 + glass fiber, providing both strength and comfortable handling. Custom colors and shapes are supported to match product aesthetics and improve brand visibility.
All components meet ROHS and REACH directives and are ISO 9001:2015 certified. Various stroke lengths, thread pitches, and shaft sizes are available, with spring force adjustable to your application. Ideal for designs requiring quick disassembly, secure locking, and modular functionality, this pull pin is a vital solution for modern equipment.
Round Head Pull Pin, Indexing Plunger, D34 D42 D50 D58
PS100
Spring loaded pull pin, Indexing plunger, Pop pin
Round head pull pins, also known as round handle pull pins, are spring-loaded components designed for quick positioning and modular assembly. Widely used in medical equipment, monitor arms, sports gear, and mobile mechanisms, UJEN's version features a smooth, ergonomic head paired with a high-tension return spring. A simple pull enables fast engagement or disassembly, and the pin returns to its original position when released—enhancing both operational efficiency and safety.
The standard pin body is made of carbon steel with trivalent zinc plating, offering excellent corrosion resistance and environmental compliance. Custom materials such as stainless steel, alloy steel, or tool steel are also available based on strength requirements. The pull grip is molded from highly durable PA6 + glass fiber, providing both strength and comfortable handling. Custom colors and shapes are supported to match product aesthetics and improve brand visibility.
All components meet ROHS and REACH directives and are ISO 9001:2015 certified. Various stroke lengths, thread pitches, and shaft sizes are available, with spring force adjustable to your application. Ideal for designs requiring quick disassembly, secure locking, and modular functionality, this pull pin is a vital solution for modern equipment.
Function
The round head pull pin is a mechanical component designed for quick positioning and automatic reset. It is widely used in movable structures and equipment that require frequent assembly and disassembly. With its simple operation and precise alignment, it serves as an effective solution for improving modular structural efficiency.
Features
- Round knob design offers natural grip and intuitive operation
- Spring return mechanism resets automatically after release
- Precision-machined for high durability and accurate positioning
- Available in various stroke lengths and thread combinations
- Custom materials such as stainless steel, alloy steel, and tool steel available
- Surface treatments include black oxide, zinc plating, and electrophoretic coating
- Fully compliant with RoHS, REACH, and SGS certifications
- Smooth and consistent pull/push operation
- Threads conform to international Class 2 standard
- Flame resistant, heat resistant, and UV resistant materials
- Matte-finish plastic knob with burr-free, smooth contact
- Combines ergonomic handling with elegant design
- Refined metal surfaces with trivalent white zinc finish for stable corrosion protection
- Tight dimensional tolerances between metal components reduce play
- Rounded tip on center pin ensures smooth re-insertion
- Chamfered screw tips reduce mating surface wear during installation
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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Round Head Pull Pin, Indexing Plunger, D34 D42 D50 D58 | 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.