DIN 436 Square Washer for Wood Construction — Complete Product Series

FULLERKREG DIN 436 square flat washers are manufactured to DIN 436 standard in a full range of materials and surface treatments. DIN 436 square washers feature a large square external shape providing a significantly larger bearing area than conventional round washers — essential for wood construction, timber framing, and seismic applications where pull-through resistance is critical. The square profile also prevents rotation during tightening and locks into the wood grain. Available in stainless steel, hot-dip galvanized, and zinc-plated finishes to suit all exposure conditions from indoor to marine environments. Size range M10–M52.

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Product Variants — Browse by Material & Finish

DIN 436 Square Washer — A2 Stainless Steel (SUS304), Whitened & Passivated
A2 stainless steel (SUS304) · Whitened & passivated · M10–M52 · Non-magnetic · General outdoor corrosion resistance · Food-safe

DIN 436 Square Washer — A4 Marine Stainless Steel (SUS316), Whitened & Passivated
A4 stainless steel (SUS316) · Whitened & passivated · M10–M52 · Mo 2–3% · Marine-grade · Superior chloride & seawater resistance

DIN 436 Square Washer — Low Carbon Steel, Hot-Dip Galvanized (HDG)
Low carbon steel · HDG per ISO 1461 · M10–M52 · 45–85 μm zinc coating · Cathodic protection · Heavy-duty outdoor structural · Most economical for large projects

DIN 436 Square Washer — Low Carbon Steel, Zinc Plated
Low carbon steel · Zinc electroplating · M10–M52 · 5–12 μm zinc coating · Bright finish · Indoor & sheltered outdoor · Most economical option

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How to Choose the Right Grade

Application Environment	Recommended Grade
Marine, offshore, seawater splash zone	A4 Stainless Steel (SUS316)
General outdoor, coastal, food processing	A2 Stainless Steel (SUS304)
Heavy-duty outdoor structural timber	HDG (Hot-Dip Galvanized)
Indoor or sheltered outdoor timber	Zinc Plated (most economical)
Non-magnetic or food-safe required	A2 or A4 Stainless Steel
Large-volume, cost-sensitive projects	Zinc Plated or HDG

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Surface Treatment Comparison

Property	Zinc Plated	HDG	A2 Stainless	A4 Stainless
Coating thickness	5–12 μm	45–85 μm	Passive layer	Passive layer
Corrosion resistance	Basic	Excellent	Good	Superior
Cathodic protection	Limited	Yes	No	No
Non-magnetic	No	No	Yes	Yes
Cost	Lowest	Low–Medium	Medium	Higher

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DIN 436 Standard Overview

• Standard: DIN 436
• Profile: Square flat washer — large bearing area, prevents rotation
• Size range: M10 – M52 (square side 30–160mm, thickness 3–10mm)
• Primary use: Wood construction, timber framing, seismic applications
• Key advantage vs. round washers: Much larger bearing area — prevents bolt pull-through in timber
• All grades RoHS & REACH compliant

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Product Photo Gallery

FULLERKREG DIN 436 Square Washers — product range overview:

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Why Choose FULLERKREG?

• 🏭 Direct manufacturer — factory in China, no middlemen
• 📐 Strict DIN dimensional control — 100% inspection on critical dimensions
• 🌍 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, HDG inspection reports, RoHS declarations on request
• ⚡ Fast lead times — standard sizes in stock, ready to ship

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FULLERKREG Fasteners — Precision DIN Standard Fasteners, Direct from Manufacturer.
For wholesale inquiries, technical questions, or custom orders, please contact our sales team.