Black Grade 8.8 Steel Oversize Flat Washer Plain Gasket Large Wider M3–M16

$3.62 USD

Save Liquid error (snippets/price line 138): divided by 0% Sold out

Taxes included. Shipping calculated at checkout.

Inner Diameter 10pcs M3x10x0.8mm 10pcs M4x12x1mm 10pcs M5x12x1mm 10pcs M6x18x1mm 10pcs M8x24x2mm 5pcs M10x28x2m 2pcs M12x37x3mm 2pcs M14x37x3mm 1pcs M16x44x3mm

Quantity

Black Grade 8.8 Steel Oversize Flat Washer Plain Gasket — Large Wider M3–M16

Grade 8.8 steel oversize flat washers with a larger outer diameter than standard DIN125 washers. The wider bearing surface distributes bolt load over a greater area, preventing pull-through in soft materials (wood, plastic, composite panels) and providing a stable bearing surface for oversized or elongated holes. Black oxide finish for professional appearance.

Key Specifications

Material	Carbon Steel
Grade	8.8
Finish	Black oxide
Type	Oversize flat washer (larger OD than DIN125)
Size Range	M3, M4, M5, M6, M8, M10, M12, M14, M16
Key Feature	Larger outer diameter for maximum load distribution

Why Choose Oversize Flat Washers?

Larger outer diameter — greater bearing surface than standard DIN125 washers; prevents pull-through in soft materials
Grade 8.8 strength — high-strength steel for structural and heavy-duty applications
Black oxide finish — professional appearance; light corrosion resistance for indoor use
Oversized hole coverage — covers elongated slots and oversized holes where standard washers would fall through
M3–M16 range — covers light electronics to heavy structural assembly

Typical Applications

Wood and timber fastening (prevents bolt head pull-through)
Composite panel and plywood fastening
Structural steel assembly with oversized or slotted holes
Furniture and cabinet assembly requiring large bearing surface
Automotive body panel and trim fastening
General construction and fabrication

FAQ

Q: What is the difference between oversize and standard flat washers?
A: Oversize washers have a larger outer diameter than standard DIN125 washers for the same bolt size. This provides a greater bearing surface area, which is important when fastening into soft materials (wood, plastic) or when the hole is larger than standard.

Q: Are these suitable for outdoor use?
A: Black oxide provides light corrosion resistance for dry indoor environments. For outdoor use, choose A2-70 304 stainless steel or hot-dip galvanized washers instead.