DIN988 304 Stainless Steel Ultrathin Adjusting Precision Shim Gasket Flat Wafer Washer M2–M40

DIN988 304 Stainless Steel Ultrathin Adjusting Precision Shim Gasket Flat Wafer Washer M2–M40

DIN988 standard 304 stainless steel ultrathin precision shim washers (shim gaskets / flat wafer washers) for bearing preload adjustment, shaft spacing, and precision mechanical assembly. The ultrathin profile (0.1–1.0mm thickness) allows fine adjustment of axial clearance and bearing preload in precision machinery, CNC equipment, and optical instruments.

Key Specifications

Why Choose DIN988 Precision Shim Washers?

• Ultrathin precision profile — 0.1–1.0mm thickness for fine axial adjustment in precision assemblies
• Tight thickness tolerance — precision ground for consistent, repeatable adjustment
• 304 stainless steel — corrosion-resistant and dimensionally stable for long-term precision assemblies
• M2–M40 range — covers miniature instrument bearings to large industrial shaft assemblies
• DIN988 standard — interchangeable with ISO 7090 shim washers

Typical Applications

• Bearing preload adjustment in precision spindles and gearboxes
• Shaft axial clearance adjustment in CNC machines and lathes
• Optical instrument and camera lens spacing
• 3D printer Z-axis and linear rail alignment shimming
• Robotics joint and actuator precision spacing
• Precision instrument and scientific equipment assembly

FAQ

Q: What is the difference between a shim washer and a standard flat washer?
A: Shim washers (DIN988) are precision ground to tight thickness tolerances (typically ±0.01–0.05mm) for use in precision adjustment applications. Standard flat washers (DIN125) have looser thickness tolerances and are used for load distribution, not precision adjustment.

Q: How do I select the right shim thickness?
A: Measure the axial clearance or preload gap you need to fill. Use a combination of shim thicknesses (e.g., 0.1mm + 0.2mm = 0.3mm) to achieve the exact required adjustment. Always measure with a micrometer for precision applications.

Package Contents

• DIN988 304 SS precision shim gasket flat wafer washers (quantity, inner diameter, and thickness per selected variant)