- Size Specifications: M6x1 thread size; Thread length of 11mm (0.43 inches); Pin dimensions of 4mm x 4mm (0.16 inches x 0.16 inches) (LD); Total length measures 39mm (1.54 inches). Package includes 4 retractable spring plungers. - Durable Construction: Crafted from 304 stainless steel, this spring steel pin is built for longevity, offering high hardness and excellent corrosion resistance. The plunger features a flat head design along with a rotating pull ring for ease of manual adjustments, and comes equipped with nuts to secure machinery effectively. - Effortless Operation: The user-friendly design allows for quick positioning and securing of mechanical components. Simply press the button to retract or extend the pin, ensuring fast and uncomplicated adjustments. - Versatile Applications: Ideal for quick positional adjustments and securing or locking in various settings, this spring plunger is perfect for use in jigs, molds, machinery, and industrial equipment. Whether you're assembling prototypes, setting up production lines, or adjusting fixtures, this tool enhances efficiency. - Key Benefits: - Fast and easy adjustments save time during setups. - High-quality materials ensure reliability and longevity, reducing the need for frequent replacements. - Versatile use across multiple industries, making it a valuable addition to your toolkit. This retractable spring plunger is designed to meet your needs for precision and security in mechanical applications.