ISO 7093 Large OD Flat Washer
ISO 7093 Large Flat Washers
DIN 9021 Equivalent | Large Outside Diameter (Fender) Washers
ISO 7093 defines large OD flat washers — approximately 3× bolt diameter outer dimension. These "fender" style washers distribute load over a wider area, ideal for soft materials, oversized holes, and thin sheet metal.
Quick Specifications
Series
Large OD
OD Ratio
~3× Bolt Dia.
Common Name
Fender Washer
DIN Equivalent
DIN 9021
Dimensions (vs Normal Washer)
| For Bolt | Inner Dia. | Large OD (7093) | Normal OD (7089) |
|---|---|---|---|
| M5 | 5.3 mm | 15 mm | 10 mm |
| M6 | 6.4 mm | 18 mm | 12 mm |
| M8 | 8.4 mm | 24 mm | 16 mm |
| M10 | 10.5 mm | 30 mm | 20 mm |
| M12 | 13.0 mm | 37 mm | 24 mm |
When to Use Large Washers
Soft Materials
Wood, plastic, fiberglass
Oversized Holes
Slotted/elongated holes
Thin Sheet Metal
Prevents pull-through
Automotive Panels
"Fender washer" origin