A flat washer with a particularly large outer diameter in proportion to its central hole. They are commonly used to spread the load on thin sheet metal, and are named after their use on automobile fenders.
Chemical Composition:
Cr | Ni | C | Mn | Si | P | S | N |
18.00 min | 8.00 min | 0.08 max | 2.00 max | 0.75 max | 0.045 max | 0.030 max | 0.10 max |
NOMINAL DIAMETERS: 3/16”, 1/4”, 5/16”, 3/8”, 7/16”, 1/2”, 9/16”, 5/8”, 3/4”, 7/8”, 1”
CORE HARDNESS (HRB): 95 – 107
ELONGATION: Min. 40 %
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