Washers Flat BS A2 M3 – M30 (Packs of 100)

Description

Full Product Description: Flat Washers – A2 Stainless Steel (M3 to M30), Packs of 100

Overview

These flat washers are precision-engineered from A2 stainless steel (18/8 grade)—offering excellent corrosion resistance and strength. Compliant with standard specifications like DIN 125 (Form A), ISO 7089, or BS 4320, they are available in metric sizes from M3 to M30, and are typically packaged in convenient packs of 100 for bulk usage.

Key Specifications

• Standard Types & Sizing
  For example, the M30 Form A washer (DIN 125A) features:

  • Inner Diameter (ID): 31 mm

  • Outer Diameter (OD): 56 mm

  • Thickness: 4 mm

  Additional size specifications for BS 4320/ISO types are consistent with these proportions.

• Material & Finish
  Made from A2 (304) stainless steel, ensuring high resistance to rust, making them suitable for both indoor and outdoor applications—including harsh or humid environments.

• Function & Application
  These washers distribute the axial load of threaded fasteners—helping to protect surfaces from damage and prevent loosening, especially when tightening bolts or nuts on sensitive materials.

• Common Sizes (M3–M30)
  Specific dimensions, such as detailed for M3 through M30 (ID, OD, thickness), are listed on fastener supplier sites like TMS and Dry Tech Fasteners.