ASTM F436 Hardened Structural Steel Washer 3/4 Inch Beveled Type 3 Weathering Round Flat
ASTM F436 Hardened Structural Washers & Beveled Type 3 Washers
Our ASTM F436 hardened structural washers and beveled Type 3 washers are precision hot-forged and heat treated to deliver dependable load distribution and vibration resistance in high-strength structural steel connections. Available in flat round, clipped, and beveled configurations, they meet the mechanical and dimensional requirements of ASTM F436 / F436M for bolted structural assemblies.
Key Features
- ASTM F436 compliant: Manufactured to ASTM F436 / F436M for hardened steel washers used with high strength structural bolts such as ASTM A325 / F3125 Grade A325 and A490.
- Three washer types: Type 1 carbon steel flat for general structural use; Type 2 weathering steel flat for atmospheric corrosion resistance in exposed steel structures; Type 3 beveled with 1:6 slope for sloped flange and channel surfaces, ensuring uniform bolt preload on inclined faces.
- Hardened and tempered: Hardness controlled within 38-45 HRC for consistent bearing performance under heavy static and dynamic loads.
- Multiple finishes: Plain oiled, hot dip galvanized per ASTM F2329, and mechanical zinc plated per ASTM B695 Class 50 to suit indoor and outdoor service conditions. Black oxide available upon factory confirmation.
- Companion to structural bolts: Designed for use under bolt heads and nuts in structural steel connections to distribute preload and protect connected surfaces.
Specifications
| Standard |
ASTM F436 / F436M
|
| Washer Type |
Type 1 (Carbon Steel Flat) / Type 2 (Weathering Steel Flat) / Type 3 Beveled (1:6 slope)
|
| Material |
Carbon Steel / Weathering Steel (Corten Grade)
|
| Hardness |
38-45 HRC (Type 1) / 38-45 HRC (Type 2) / 38-45 HRC (Type 3)
|
| Size Range |
1/2 inch - 4 inch (M12 - M100), or as per drawing
|
| Finish |
Plain Oiled / Hot Dip Galvanized (ASTM F2329) / Mechanical Zinc Plated (ASTM B695 Class 50)
|
| Shape |
Round Flat / Clipped / Beveled
|
Applications
Widely used in steel structure engineering, bridge construction, transmission towers, heavy machinery, and bolted flange connections where hardened ASTM F436 washers and beveled Type 3 washers are specified for reliable structural fastening.
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Why Choose Us
As an experienced fastener manufacturer, we offer full dimensional inspection, third-party test reports, OEM/ODM service, and competitive factory pricing on bulk orders of ASTM F436 hardened structural washers and beveled Type 3 washers.
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