Home » DIN 434 Square Beveled Washer(8%) (For Channels) - Zinc CR3

DIN 434 Square Beveled Washer(8%) (For Channels) - Zinc CR3

DIN 434 Square Beveled Washer (8%) for Channels — Low Carbon Steel, Zinc Plated CR3

FULLERKREG DIN 434 square beveled washers are manufactured to DIN 434 standard in low carbon steel with zinc electroplating and trivalent chromium (CR3) passivation. DIN 434 is a square taper washer with an 8% bevel (approximately 4.6°) specifically designed for use with steel channels (UPN / UPE / C-sections). The tapered profile compensates for the natural inward slope of the channel flange, ensuring the bolt head or nut bears flat and evenly — eliminating bending stress on the bolt shank and ensuring correct structural bolt behavior. The zinc CR3 finish provides ≥72h neutral salt spray resistance with full RoHS compliance — no hexavalent chromium (Cr6+).

Product Highlights

  • Standard: DIN 434 (Square Taper Washer, 8% Bevel, for Channels)
  • Material: Low Carbon Steel (Q235 / S235 equivalent)
  • Surface Treatment: Zinc Electroplating + CR3 Trivalent Chromium Passivation
  • Corrosion Resistance: ≥72h neutral salt spray (NSS) per ISO 9227
  • Size Range: M10 – M36
  • Bevel angle: 8% (approx. 4.6°) — matches standard channel flange taper
  • Function: Compensates channel flange slope — ensures flat bearing, eliminates bolt bending stress
  • Used with: UPN / UPE / C-section steel channels
  • RoHS Compliant — CR3, no Cr6+

Dimensional Specifications — DIN 434 Square Beveled Washer (8%), Low Carbon Steel Zinc CR3

All dimensions in millimeters (mm). Per DIN 434.

For Thread d1 (hole) A (side length) C (thin end) E (thick end) Weight kg/100pcs
M10 11 30 3.0 5.4 0.62
M12 13.5 37 4.0 7.0 1.19
M16 17.5 45 4.5 8.1 2.0
M20 22 52 5.0 9.2 3.1
M22 24 56 5.0 9.5 3.8
M24 26 62 5.5 10.5 5.2
M27 30 72 6.0 11.8 8.0
M30 33 78 6.5 12.9 10.3
M36 39 92 7.0 14.4 17.0

All dimensions in mm per DIN 434. d1 = inner hole diameter; A = square side length; C = minimum thickness (thin end); E = maximum thickness (thick end). Bevel = 8% (approx. 4.6°).

Zinc CR3 vs. HDG vs. Stainless Steel — Surface Treatment Comparison

Property Zinc CR3 (This Product) HDG A2 Stainless (SUS304)
Coating type Electroplated zinc + CR3 passivation Hot-dip zinc (metallurgically bonded) Passive oxide layer
Coating thickness 5–12 μm 45–85 μm N/A
Salt spray resistance ≥72h NSS Excellent — outdoor structural Good — general outdoor
RoHS compliant Yes — CR3, no Cr6+ Yes Yes
Appearance Bright silver, uniform Matte grey, textured Bright silver, smooth
Cost Economical Low–Medium Higher
Best for General industrial, RoHS-required Heavy outdoor structural Corrosion-resistant, food-safe

DIN 434 vs. DIN 435 — Key Differences

Feature DIN 434 (For Channels) DIN 435 (For I-Beams)
Designed for Steel channels (UPN / UPE / C-section) I-beams / H-beams (IPE / HEA / HEB)
Bevel 8% (approx. 4.6°) 14% (approx. 8.0°)
Flange taper compensated Channel flange (shallower taper) I-beam flange (steeper taper)

Material Properties — Low Carbon Steel, Zinc CR3

Property Value
Material Low Carbon Steel (Q235 / S235 equivalent)
C Content ≤0.22%
Surface Treatment Zinc Electroplating + CR3 Passivation
Coating Thickness 5–12 μm
Salt Spray Resistance ≥72h NSS per ISO 9227
Appearance Bright silver with slight blue tint
RoHS / REACH Compliant — CR3, no Cr6+

Application Scenarios

  • General industrial channel connections — UPN/UPE bolted joints in sheltered or light outdoor environments
  • Mechanical & structural assemblies — where RoHS-compliant zinc finish is required
  • Indoor structural steelwork — factory floors, mezzanines, racking systems with channel sections
  • Light outdoor structural applications — sheltered environments, covered structures
  • Electrical & control panel frames — channel-section frames requiring RoHS compliance
  • General engineering — cost-effective zinc CR3 finish for standard channel connections

Product Photo Gallery

FULLERKREG DIN 434 Square Beveled Washer (8%), Low Carbon Steel, Zinc CR3:

[ Photo 1 ] [ Photo 2 ] [ Photo 3 ] [ Photo 4 ]

Why Choose FULLERKREG?

  • 🏭 Direct manufacturer — factory in China, no middlemen
  • 📐 Strict DIN dimensional control — 100% inspection on critical dimensions and bevel angle
  • 🌍 Global export experience — serving distributors in Europe, North America, Southeast Asia
  • 📦 Flexible MOQ — small trial orders and large bulk shipments both welcome
  • 📋 Full documentation — material certs, RoHS declarations available
  • ⚡ Fast lead times — standard sizes in stock, ready to ship

Frequently Asked Questions

Q: What is CR3 passivation?
A: CR3 refers to trivalent chromium passivation applied over zinc electroplating. It provides enhanced corrosion protection (≥72h NSS) without hexavalent chromium (Cr6+), making it fully RoHS compliant. Appearance: bright silver with slight blue tint.

Q: What is DIN 434?
A: DIN 434 is a square taper washer with an 8% bevel (approx. 4.6°) designed for use with steel channels (UPN/UPE/C-sections). The tapered profile compensates the natural inward slope of the channel flange, ensuring the bolt head or nut bears flat and evenly, eliminating bending stress on the bolt shank.

Q: Zinc CR3 vs. HDG — which to choose?
A: Zinc CR3 (5–12 μm) is economical, RoHS-compliant, and suitable for general industrial and light outdoor use. HDG (45–85 μm) provides much thicker coating with cathodic protection — preferred for heavy-duty outdoor structural steelwork with 25–50+ year service life requirements.

Q: What is the difference between DIN 434 and DIN 435?
A: DIN 434 (8% bevel) is for steel channels (UPN/UPE) with a shallower flange taper. DIN 435 (14% bevel) is for I-beams and H-beams (IPE/HEA/HEB) with a steeper flange taper.

Q: Do you provide material test certificates?
A: Yes. Mill certificates and RoHS declarations available upon request.

FULLERKREG Fasteners — Precision DIN Standard Fasteners, Direct from Manufacturer.
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