20 pcs M4 x 12 stainless steel ball plunger set screws with internal hex drive, spring loaded flat head plungers for positioning and indexing, smooth ball action, corrosion resistant design for fixtures, assemblies and precision equipment

M4 x 12mm Stainless Steel Spring Ball Plunger Set
✔️ 20 Piece Internal Hex Drive Positioning Screws

These spring loaded ball plunger set screws are designed for positioning, indexing, and light holding applications in compact mechanical assemblies. They’re commonly used in medical devices, lubrication systems, pneumatic tools, fixtures, and precision assembly work where smooth engagement and repeatable positioning are needed.

Pack size: 20 spring ball plunger screws.

✅ Thread size is M4 with 12 mm overall length
✅ Stainless steel body for strength and corrosion resistance
✅ Internal hex drive flat head design for clean, flush installation
✅ Spring loaded ball tip applies controlled, consistent pressure
✅ Smooth ball action helps guide movement and reduce wear
✅ Commonly used in fixtures, jigs, assemblies, and adjustment points
✅ Suitable for medical, pneumatic, and precision equipment

Plunger Dimensions
All dimensions shown in millimeters

Thread Size M4
Overall Length 12.0

💡 Why are internal hex spring ball plunger screws used in precision assemblies?
Spring ball plunger screws are used to create simple, repeatable positioning without bulky hardware.

• Internal spring delivers steady force for consistent indexing

• Ball tip allows smooth engagement and easy release

• Compact threaded design fits tight spaces in precision equipment

This M4 spring ball plunger set is a handy choice for clean positioning, smooth adjustment, and dependable performance in small mechanical and industrial applications.