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Penny Washer

Penny Washers are large-diameter flat washers designed to spread the load of a fastener over a wider surface area. They are ideal for use with thin sheet materials, wood, and soft substrates where load distribution is critical. Manufactured to ASTM and DIN standards, they are available in a wide range of materials, diameters, and finishes. Their oversized design reduces the risk of pull-through and enhances fastening stability. They are commonly used in construction, carpentry, automotive, and general engineering applications.

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Description

Premium Quality Penny Washer Supplier in Dubai, UAE

Unifastener Industries LLC is a reliable supplier and manufacturer of premium-quality Penny Washers in Dubai, UAE. The company specializes in industrial fastening and load distribution solutions designed for construction projects, roofing systems, engineering works, machinery assembly, and heavy-duty industrial applications. Penny Washers are specially designed flat washers with a larger outer diameter used to distribute load over a wider surface area and prevent pull-through damage in fastening applications. These washers provide enhanced support, stability, and secure fastening performance for industrial and commercial use. Manufactured using high-grade materials and advanced production standards, Penny Washers provide excellent strength, corrosion resistance, durability, and reliable long-lasting performance for demanding environments.


Standards:
– ASTM F844 (general-purpose large OD washers)
– ASTM F436 (structural flat washers)
– DIN 9021 (large series washers, wide OD)
– ISO 7093-1 (equivalent to DIN 9021)

Grades:
– ASTM Grades: F844, F436
– DIN / ISO Grades: 4.6, 5.6, 8.8 (washer compatibility with bolt grades)

Material Options:
– Carbon steel
– Stainless steel (A2 / A4 grades)
– Galvanized steel
– Brass
– Aluminum (lightweight applications)

Diameter Range: M3 to M36 (metric) / 1/8″ to 1-1/2″ (inch)

Thickness Range: 1mm to 6mm depending on size

Outer Diameter (OD): Typically 3x the bolt diameter (wider than standard flat washers)

Types:
– Flat penny washers (DIN 9021 / ISO 7093-1)
– Extra-large OD washers
– Thin gauge washers (for lightweight fastening)

Coating Options:
– Plain (self-color, oiled)
– Zinc electroplated
– Hot-dip galvanized (ASTM A153 / DIN EN ISO 1461)
– Nickel plated (for decorative use)
– Black oxide

Add-ons:
– Can be paired with standard or structural bolts
– Available in bulk or retail packaging
– Certification (3.1 MTC) available for structural use

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