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Factory Supplies Online in South Africa offers zinc‑plated steel fender washers sold in packets of 100, with sizes such as M6 × 32 × 1.2 mm and M10 × 45 × 1.2 mm . While the inch‑based dimensions you provided (e.g., 4 × 6 × 1.2 mm) don’t match exactly, these examples show that similar format packaging and coatings are available.
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DryTech Fasteners lists various flat, fender, and special washers, including metric sizes with zinc plating and special dimensions—but I didn’t find the exact 4 × 6 × 1.2 mm specs.
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Washers For Africa includes categories like “Special Washers Zinc,” but doesn’t detail exact sizes or packaging information online . Given your location (Johannesburg), they may be a very relevant local supplier.
Special Washers Zinc Plated 4 x 6 x 1.2 – 10 x 25 x 3 (Packs of 100)
R9,20
What You Can Do Next
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Contact Suppliers Directly
Reach out to local suppliers such as Washers For Africa or DryTech Fasteners and provide them your exact specification:-
Zinc‑plated flat washers
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Inner Diameter: 4 mm
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Outer Diameter: 6 mm
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Thickness: 1.2 mm
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Quantity: packs of 100
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Clarify “Special Washers” Definition
The term might refer to non-standard or custom dimensions—ensure that they understand exactly what size and finish you’re after. -
Ask for a Datasheet or Product Code
If they have these items in inventory, suppliers typically have specific product numbers or datasheets that describe each size, finish, and pack quantity.

