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Pengkumta Fasteners produces Alloy Steel Washers in Bangkok, Thailand, designed for use with high-strength bolted joints. These washers are made from the same strong alloy steels as the bolts and studs, ensuring that they do not become the weak link under load. Quality control guarantees flatness, dimensional accuracy, and proper hardness to effectively distribute load and prevent fastener embedding or loosening.
Alloy steel washers are created from steels alloyed with elements like chromium, molybdenum, and sometimes vanadium or nickel, based on specifications. They undergo heat treatment, such as quenching and tempering, to achieve high hardness, often between 40 and 60 HRC, and high tensile strength around 800 to 1100 MPa. They also possess good yield strength and enough toughness to resist cracking under load.
| Specifications | : | ASTM A 193 ASME SA 193 |
| Standard | : | DIN, ASTM, BS and all International Standards |
| Length | : | 3 mm to B6 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Type | : | Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts. |
| Element | Content (%) |
|---|---|
| Iron, Fe | 35 |
| Nickel, Ni | 32-38 |
| Chromium, Cr | 19-21 |
| Copper, Cu | 3-4 |
| Manganese, Mn | ≤2 |
| Molybdenum, Mo | 2-3 |
| Niobium, Nb | ≤1 |
| Silicon, Si | ≤1 |
| Carbon, C | ≤0.07 |
| Phosphorous, P | ≤0.045 |
| Alloy Steel | 0.15 max | 0.3 – 0.6 | 0.035 | 0.03 | 0.5 max | 4.00 – 6.00 | 0.45 – 0.65 |
To satisfy our clients needs by providing high quality products at competitive price as per the schedule and to maintain long term relationship with our clients.
Alloy Steel washers are used in a number of high-performance applications . In automobile manufacturing, they serve the purpose of sealing and spacing of some of the parts of the engine and the suspension system. In aerospace, they provide protection to vital components and also offer mechanical support. In construction they are used to support and hold up heavy equipment and structures that are in the process of being built. Alloy Steel washers are also used in mining, energy and manufacturing industries due to their high stress application performance.
Alloy Steel Washers work alongside alloy bolts or studs in high-stress and high-temperature assemblies, such as heat exchangers, pressure vessel flanges, heavy machinery, and structural steel joints. They distribute load over a larger area, reduce bearing pressure, protect surfaces, and prevent uneven tightening. In dynamic or vibrating environments, they help avoid loosening. These washers are used in industries including oil and gas, power generation, mining, and heavy equipment, where safety, load-bearing, and durability are critical.
Pengkumta Fasteners is a leading manufacturer and supplier of high-quality fasteners in Bangkok, Thailand, with over 8 years of experience serving global industries.
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