Precision-engineered flat, spring lock, fender, Belleville, and special washers in stainless steel, duplex, Inconel, Hastelloy, and titanium to DIN, ASME, and ISO standards.
Neelkamal Alloys LLP is a trusted manufacturer, stockist, and worldwide exporter of high-grade industrial washers. Designed to distribute fastener loads, prevent joint loosening under intense vibration, and protect mating surfaces against galvanic corrosion and galling.
Our washer range is manufactured using premium-certified raw materials sourced from audited mills. Whether your application demands high temperature endurance in power generation plants, chloride stress corrosion resistance in marine environments, or precise clamping force in oil & gas pipeline flanges, we provide washers engineered to exact specifications.
We manufacture standard dimensions to ASME B18.22.1, DIN 125, DIN 127, and ISO 7089 standards, as well as customized thicknesses, outer diameters, and inner clearances manufactured strictly to customer engineering drawings.
Explore our standard and specialized washer configurations designed for heavy-duty industrial assembly.
Engineered to distribute bolt head and nut loads uniformly across connected components, reducing surface stress and deformation.
Provides spring tension and helical split edges that bite into mating faces to prevent back-off caused by dynamic vibration.
Features an extra-wide outer diameter to span oversized or worn holes, spreading load over a broader surface area.
Conical disc washers engineered for high spring rate in compact axial spaces, accommodating thermal expansion in flange bolting.
Internal or external teeth bite into component surfaces to ensure positive locking and optimal electrical grounding continuity.
Tailor-made thick washers, tab washers, spherical washer sets, and PTFE-coated washers crafted to exact client drawing blueprints.
Review our comprehensive material specifications for international procurement and engineering requirements.
| Material Category | Common Grades & UNS Numbers | Dimensional Standards | Key Characteristics & Service Environment |
|---|---|---|---|
| Stainless Steel | SS 304/304L, SS 316/316L, SS 310, SS 321, SS 347 | DIN 125, DIN 127, DIN 9021, ASME B18.22.1 | Excellent general corrosion resistance; food, chemical, marine, and architectural service. |
| Duplex & Super Duplex | Duplex 2205 (UNS S31803/S32205), Super Duplex 2507 (UNS S32750), S32760 | ASME B18.22.1, ISO 7089, Custom Drawings | High yield strength; superior resistance to chloride pitting, crevice corrosion, and marine environments. |
| Inconel Alloys | Inconel 600 (N06600), Inconel 625 (N06625), Inconel 718 (N07718) | DIN 2093, Custom Machined Specs | Exceptional high-temperature strength, oxidation resistance, and cyclic load endurance up to 1000°C. |
| Hastelloy Alloys | Hastelloy C276 (N10276), Hastelloy C22 (N06022), Hastelloy B2 | ASME B18.22.1, DIN 125 | Outstanding resistance to strong oxidizers, wet chlorine, sulfuric acid, and aggressive chemical processing. |
| Titanium Alloys | Titanium Grade 2 (R50400), Titanium Grade 5 (Ti-6Al-4V / R56400) | ISO 7089, DIN 125, Custom Drawing | Ultra-lightweight with high strength-to-weight ratio; immune to saltwater and chloride attack in aerospace & offshore. |
| Monel & Nickel Alloys | Monel 400 (N04400), Monel K500 (N05500), Nickel 200/201 | DIN 127, ASME B18.22.1 | Superior resistance to hydrofluoric acid, marine splash zones, and seawater velocity erosion. |
| Alloy 20 | Alloy 20 (UNS N08020 / Carpenter 20) | ASME B18.22.1, DIN 125 | Specifically formulated for sulfuric acid environment handling, pickling tanks, and chemical synthetic processes. |
Only fully certified prime coil sheets and bars with verified heat numbers enter our production line.
Automated high-speed stamping presses and precision CNC lathes guarantee consistent inner/outer diameters.
Controlled annealing or hardening followed by mechanical deburring to remove burrs and residual stress.
100% dimensional verification, hardness testing, PMI analysis, and EN 10204 3.1 certification before dispatch.
Everything procurement officers, project engineers, and global importers need to know when ordering industrial washers.
We manufacture plain flat washers, spring lock washers, fender washers, Belleville disc springs, wave washers, tab washers, spherical washers, tooth lock washers, and custom-machined washers to client engineering drawings.
Washers are manufactured in Stainless Steel (304/304L, 316/316L, 310, 321, 347), Duplex 2205, Super Duplex 2507, Inconel 600/625/718, Hastelloy C276, Monel 400/K500, Titanium Grade 2/Grade 5, and Alloy 20.
Our washers are produced in compliance with ASME B18.22.1, ASME B18.21.1, DIN 125, DIN 127, DIN 9021, DIN 6798, ISO 7089, ISO 7090, and ASTM material specifications.
Yes. Every export order is supplied with EN 10204 3.1 Mill Test Certificates detailing chemical composition, mechanical properties, hardness values, and heat number material traceability.
Yes. We produce custom washers with non-standard inner diameters, outer diameters, special thicknesses up to 50mm, Belleville disc profiles, and special surface coatings such as PTFE or Cadmium plating.
Contact our engineering sales team with your target material grade, dimensions, and quantity for immediate technical guidance and competitive export pricing.
