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Hardened Washer
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Turn Buckle with Eye Bolt and Hook Bolt
Turn Buckle with Eye Bolt and Hook Bolt
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Penny Washer
Penny Washer

Hardened Washer

Hardened Washers are heat-treated flat washers designed to distribute load and prevent embedding under high-strength bolts and nuts. They are manufactured to ASTM F436 and DIN 6916 standards for use with structural and heavy-duty fasteners. The hardened surface ensures durability, resistance to wear, and consistent torque during tightening. Available in flat, beveled, and oversized types, they meet the demands of structural steel connections. They are widely used in bridges, buildings, machinery, and heavy structural assemblies.

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Description

Premium Quality Hardened Washer Supplier in Dubai, UAE

Unifastener Industries LLC is a reliable supplier and manufacturer of premium-quality Hardened Washers in Dubai, UAE. The company specializes in industrial fastening and load distribution solutions designed for construction projects, engineering works, machinery assembly, structural applications, and heavy-duty industrial installations. Hardened Washers are specially designed high-strength fastening components used to distribute load, reduce surface damage, and provide secure support under bolts and nuts in high-tension applications. These washers offer excellent wear resistance, stability, and reliable fastening performance for demanding industrial environments. Manufactured using high-grade hardened steel and advanced production standards, Hardened Washers provide excellent strength, corrosion resistance, durability, and long-lasting performance for industrial and structural applications.


Standards:
– ASTM F436 (hardened steel washers for structural bolts)
– ASTM F844 (general-purpose hardened washers)
– DIN 125 (plain washers, reference standard)
– DIN 6916 (hardened structural washers for high-strength bolts)
– ISO 7089 / ISO 7090 (equivalent to DIN 125)

Grades:
– ASTM Grades: F436, F844
– DIN / ISO Grades: 8.8, 10.9 (washer hardness compatibility with bolt grades)

Material Options:
– Medium carbon steel (heat-treated and hardened)
– Alloy steel
– Stainless steel (A2 / A4 hardened types)

Hardness Range: 38–45 HRC (per ASTM F436)

Diameter Range: M12 to M36 (metric) / 1/2″ to 1-1/2″ (inch)

Thickness Range: 2mm to 6mm depending on size

Types:
– Flat hardened washers (DIN 6916 / ASTM F436)
– Beveled hardened washers (for wide-flange beams, ASTM F436 Type 2)
– Oversized washers (for slotted holes)

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

Add-ons:
– Supplied with structural bolt assemblies (ASTM A325/A490, DIN 6914)
– Available with certification (3.1 MTC, test reports)
– Packaging in bulk or project-specific kits

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