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Tow Tongue Washer
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Tow Tongue Washer

Two Tongue Washers are mechanical locking washers with two tabs designed to secure fasteners against loosening under dynamic loads. They are manufactured to ASTM, DIN, and ISO standards in carbon steel, stainless steel, spring steel, or bronze. One tongue locks into a slot or keyway while the other is bent against a nut or bolt flat, creating a secure mechanical lock. Available in zinc plated, stainless, bronze, or phosphate finishes, they combine durability with corrosion resistance. They are widely used in automotive, railways, gear assemblies, machinery, and aerospace applications for reliable fastening security.

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Description

Premium Quality Two Tongue Washer Supplier in Dubai, UAE

Unifastener Industries LLC is a reliable supplier and manufacturer of premium-quality Two Tongue Washers in Dubai, UAE. The company specializes in industrial fastening and locking solutions designed for machinery assembly, engineering works, automotive systems, construction projects, and heavy-duty industrial applications. Two Tongue Washers, also known as Tab Washers, are specially designed locking washers used to prevent nuts and bolts from rotating or loosening under vibration and dynamic loads. These washers feature dual locking tongues that provide secure positioning and reliable fastening stability for critical industrial applications. Manufactured using high-grade materials and advanced production standards, Two Tongue Washers provide excellent strength, corrosion resistance, durability, and dependable long-lasting performance in demanding industrial environments.

Standards:
– DIN 463 (tab washers – single and double tongue types)
– ASTM F436 (general hardened steel washers – reference)
– ISO 2982 (tab washer dimensional references)
– ISO 9001 (manufacturing quality compliance)

Grades:
– Carbon steel (hardened and tempered)
– Stainless steel A2 / A4 (AISI 304 / 316 for corrosion resistance)
– Spring steel (for locking strength)
– Phosphor bronze (for electrical/corrosion applications)

Material Options:
– Carbon steel (zinc plated, phosphate, black oxide)
– Stainless steel (passivated, polished)
– Spring steel (hardened with protective finish)
– Bronze or brass (specialized uses)

Size Range:
– Inner diameter: M4 to M60
– Outer diameter: as per DIN 463
– Thickness: 0.5mm to 4mm

Types:
– Two tongue tab washer (DIN 463 Form B)
– Stainless steel two tongue washer
– Carbon steel two tongue washer
– Custom heavy-duty tab washer

Properties:
– Features two projecting tabs (tongues) – one bends against the fastener flat and the other locks into a slot or keyway
– Provides positive mechanical locking to prevent loosening
– Suitable for use in rotating assemblies and dynamic load conditions
– Prevents fastener rotation under vibration and shock
– Reliable and reusable in many applications

Coating Options:
– Zinc electroplated (clear, yellow, or black)
– Phosphate and oil finish
– Black oxide finish
– Stainless steel natural finish

Add-ons:
– Available with pre-cut slots or keyways for specialized applications
– Can be supplied in metric and inch dimensions
– Certification/test reports (hardness, torque resistance, coating thickness) available on request

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