Specification Brand : HARFINGTON BulletPoint1 : Size - Thread Size: M16x1.5; Thread Length: 20mm / 0.79 inches, Pin Diameter: 8mm / 0.31 inches. Small and lightweight for easy carry with you. BulletPoint2 : Material - The return knob plunger is made of carbon steel, which has high hardness and corrosion resistance. The surface is blackened to prevent rust and is durable. BulletPoint3 : Feature - The thin thread of the spring plunger is conducive to fine-tuning the plunger installation position to achieve the optimal working position for designers and achieve precise indexing and positioning or stopping. BulletPoint4 : Application - Telescopic lock pin is an indispensable accessory in the machinery industry and is widely used in industrial equipment, engineering machinery, and workshop machine tool production equipment. BulletPoint5 : Note - By operating the knob to pull out or insert the pin, you can easily and quickly locate and fix the mechanical elements of the workpiece. ItemName : HARFINGTON 2pcs Push Fit Ball Nose Spring Plunger M16x1.5 Thread 8mm Pin Dia. Carbon Steel Self-Locking Plunger Retractable Index Plunger for Industrial Equipment ItemPackageDimensions_Height : 1.18 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemTypeKeyword : push-fit-ball-nose-spring-plunger Manufacturer : HARFINGTON Material : Carbon Steel PartNumber : hta241004hh001630 ProductDescription : The return knob plunger is made of carbon steel, which has high hardness and corrosion resistance. The surface is blackened to prevent rust and is durable. A index plunger is used for positioning and indexing. The threads are clear and thin for precise positioning and equipped with nuts, which can be fixed in various mechanical equipment. The Spring Plunger is an important part or component of the machine. Used to enhance the interlocking function of workshop machinery or adjust fitness equipment. Widely used in various engineering machinery and equipment, trucks, film and television industry equipment, workshop machine tool production equipment, and other industrial fastener automatic equipment.