Flat Washer M30 Black Gr.4 Form B (31x56x2.5) DIN 4320

Flat Washer
Form B
Black / Self Color
Mild Steel Grade 4
Dia: M30
Dimension: 31 x 56 x 2.5mm
DIN: 4320
A BS 4320 (formerly DIN 4320) flat washer, made From (Grade 4) Mild steel, is a robust, large-diameter or thicker circular disc used to distribute fastener loads. Its primary purpose is to provide enhanced load-bearing capacity and surface protection in heavy-duty structural applications within moderate corrosion environments.