ASTM F436 manufactured in accordance with the standard stamps, increases connection security by ensuring uniform load distribution in bolt and nut combinations. Designed especially for use with high strength fasteners, these washers are resistant to deformation and play a critical role in anti-loosening systems. Widely preferred in construction, energy and heavy industry sectors.
| Feature | |
| Standard | ASTM F436 |
| Type | Flat Washer |
| Material | Carbon Steel, Stainless Steel |
| Coating | Electrogalvanized (White/Yellow), Hot-Dip Galvanized (HDG), Nickel, Black Oxide, Dacromet, Geomet |
| Compatible Standards | ASTM A325, ASTM A490, ASTM A193, ASTM A194 |
| Measurement Range | M10 to M100 |
| Production Method | Cold or Hot Forging, Machining |
| Heat Treatment | Hardened and tempered |
- Steel construction connections
- Bridge and viaduct installations
- Power plants and industrial piping systems
- Petrochemical and refinery plants
- Heavy machine assemblies
- Fastening systems in vibrating environments
- ISO 9001:2015 Quality Management System
- ISO 14001:2015 Environmental Management System
- ISO 45001:2018 Occupational Health and Safety Management System
- EU Declaration of Conformity (PED) certificate (Compliance with the Pressure Equipment Directive)
- Our production processes, DIN, EN, ISO, and ASTM is fully compliant with the standards
- Upon request EN 10204 3.1 certificate is provided
These washers prevent wear and loosening by distributing surface pressure in bolt-nut connections. They increase the security of the connection, especially when used with high-strength fasteners.
It is preferred in high load bearing steel structure systems, energy facilities, petrochemical assemblies and bridge connections. It provides reliable fixing with its vibration and high torque resistant structure.
Application. These washers are generally designed for use with high-strength bolts such as ASTM A325, A490. They are also used in metric sizes as an alternative to washers of similar function such as DIN 6916.
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