Specification Brand : HARFINGTON BulletPoint1 : Size - M5x0.5 thread size, Thread Length: 10mm / 0.39 inches; Pin Diameter: 2.5mm / 0.1 inches(0.025 to -0.05mm tolerance); Pin Length: 2mm / 0.08 inches; Knurled Handle: 9.5mm x 4mm / 0.437 inches x 0.16 inches; Total Length: 20mm / 0.79 inches; Small and lightweight for easy carry with you. BulletPoint2 : Material - The spring pin is made of stainless steel, which has high hardness, corrosion resistance, prevents rust, and is durable. BulletPoint3 : Feature - The spring plunger with a knurled handle for manual expansion and contraction. And equipped with nuts to lock in various mechanical equipment. BulletPoint4 : Application - A telescopic lock pin is an indispensable accessory in the machinery industry, which can prevent inaccurate positioning and errors in pinhole matching. It is widely used in chassis, cabinets, electrical appliances, automotive, or the positioning and limit structure design of precision instruments such as jigs and fixtures. BulletPoint5 : Instructions - 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 Spring Plunger M5x0.5 Thread Size Pin Dia.2.5mm Retractable Quick Release Pins Stainless Steel Non-Locking Index Plunger for Industrial Equipment ItemPackageDimensions_Height : 0.39 inches ItemPackageDimensions_Length : 5.51 inches ItemPackageDimensions_Width : 3.94 inches ItemPackageQuantity : 2 ItemTypeKeyword : ball-nose-spring-plunger Manufacturer : HARFINGTON Material : Stainless Steel PartNumber : hta241026hh000440 ProductDescription : The spring pin is made of stainless steel, which has high hardness, corrosion resistance, prevents rust, and is durable. The spring plunger with a knurled handle for manual expansion and contraction. And equipped with nuts to lock in various mechanical equipment. It is an important part or component of the machine. It is used for locking and fixing the base of the optical axis fixture and is practical and convenient. Widely used in precision structural positioning and limit design in non-standard automation industries and tooling fixtures. It is also used in cabinets, electrical appliances, and cars.