Bismi Bolt House

Washers

Taper Washer

Square taper washers (DIN 434 / DIN 435) that give bolts a flat seat on the sloping flanges of channels and I-beams.

Taper Washer specifications
MaterialMild steel
Sizes availableM10 to M27
FinishBlack, Hot-dip galvanised
StandardsDIN 434 (for U channels, 8% slope), DIN 435 (for I-beams, 14% slope)
PricePrice on request – depends on size and quantity
AvailabilityIn stock for Trichy & Thanjavur. Delivered across Tamil Nadu and all over India.

Need a price or bulk quantity?

Send us the size and quantity on WhatsApp. Pick up in Trichy & Thanjavur, or we deliver across Tamil Nadu and all over India. We usually reply within working hours (Mon – Sat, 9:00 AM – 8:00 PM).

About Taper Washer

Taper washers are square washers with one sloping face. They sit on the angled inside flange of a steel channel or I-beam so the bolt head or nut bears flat, not at an angle.

  • DIN 434 for U channels (ISMC)
  • DIN 435 for I-beams (ISMB)

Essential for structural steel, sheds and industrial frames.

Common applications

  • Bolting to ISMC channels and ISMB beams
  • Structural steel work and sheds

Frequently asked questions

›Why is a taper washer needed on channels?

The inside flange of a channel or I-beam slopes. Without a taper washer the bolt sits at an angle and bends when tightened.

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