Premium M6-M36 Square Washers: High-Load Distribution for Structural Fastening
Our M6-M36 Square Washers, also known as Square Plate Washers, are engineered for heavy-duty applications that demand a significantly larger bearing surface than traditional round washers. By spreading the clamping force over a wider area, these flat square spacers prevent bolt heads and nuts from pulling through or damaging soft substrates like timber. Manufactured strictly to DIN 436 and DIN 434 standards, our washers are the preferred choice for structural engineering and infrastructure projects.
As a leading square washer factory, we specialize in high-durability finishes, including Hot Dip Galvanized (HDG) for 50+ years of rust protection in outdoor timber framing and coastal steel structures.
- Enhanced Bearing Surface: The large square profile provides maximum contact area, making them ideal for securing large bolts in wood and slot channels.
- Structural Stability: Our DIN 434 Tapered Washers are specifically designed for use with U-sections and I-beams to compensate for the flange angle, ensuring a perpendicular bolt alignment.
- Superior Corrosion Resistance: Available in Stainless Steel 316 for marine use and HDG Carbon Steel for heavy construction and power line hardware.
- Heavy-Duty Thickness: Unlike standard washers, our square plate series features increased thickness to resist bending under extreme torque.
| Size | Hole Dia (d) | Side Length (a) | Thickness (h) |
|---|---|---|---|
| M10 | 11.0 mm | 30 mm | 3.0 mm |
| M12 | 13.5 mm | 40 mm | 4.0 mm |
| M16 | 17.5 mm | 50 mm | 5.0 mm |
| M20 | 22.0 mm | 60 mm | 5.0 mm |
| M24 | 26.0 mm | 80 mm | 6.0 mm |
- Timber Construction: Securing large beams and deck posts to prevent wood crushing.
- Strut Channel Systems: Providing a stable base for bolts inside C-channels and U-profiles.
- Railway & Bridge Building: DIN 434 tapered washers are used to align fasteners on sloped steel flanges.
- Power Transmission: Heavy-duty HDG square washers for cross-arm assembly on utility poles.
A: Use DIN 436 for flat surfaces. Use DIN 434 (tapered) when fastening on the sloped flanges of U-beams to ensure the nut sits perfectly flat against the washer.
Q: Do you offer custom sizes for plate washers?
A: Yes, we provide custom stamping services for square washers with specific side lengths, thicknesses, and hole diameters to match your architectural drawings.
Source M6-M36 Square Washers from a Professional Manufacturer
Seeking bulk square plate washers with mill test certificates and competitive factory pricing? We support global wholesale and ISO-certified production. Contact us today for a free quote and technical samples!
