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Better Fastener Industry Co., Ltd. is a China-based Other Washers manufacturer producing specialty washer profiles that go beyond standard flat, spring, and lock washer capability. Our range covers wavy, conical, rubber-faced, composite, and angular compensation washers for sealing, shock absorption, load distribution, and misalignment correction in industrial assemblies.
We manufacture these components in steel, stainless steel, rubber, and composite materials to applicable DIN and ISO specifications. The range supports bearing preload control, weathertight fastener penetrations, fluid fitting seals, and non-perpendicular structural connections where a standard washer cannot maintain joint integrity.
Our Other Washers Range and Application Fit
Each profile in our specialty washer range addresses a specific mechanical or sealing condition. We produce these parts as standard items and as drawing-based custom components, so the washer geometry, material, and surface treatment can be matched to the joint rather than forced into a generic disc.
Wavy Washers
Corrugated profile delivers controlled axial spring force at lower stack height than split ring types. Used for bearing preload control, electrical contact maintenance, and vibration damping in space-constrained assemblies.
Sealing Washers
Composite rubber-metal and neoprene-faced versions combine fastening and leak prevention in one component. Applied in fluid fittings, roofing panels, and outdoor enclosures where weathertightness is required at the fastener penetration point.
Angular Compensation Washers
Paired spherical and beveled washer sets correct angular misalignment between bolt and joint surface, relieving bending stress on the bolt shank in non-perpendicular structural connections.
Conical and Countersunk Washers
Conical profiles maintain spring tension under thermal cycling, while countersunk head washers provide a finished bearing surface for flat-head fasteners in thin or soft panels.
Standard Profiles We Manufacture
Our Other Washers line includes established DIN and ASTM profiles alongside custom geometries. The table below maps the main standard items to their typical function so project teams can identify the correct starting point before drawing review.
| Standard / Profile | Typical Function | Common Material | Application Fit |
|---|---|---|---|
| DIN 434:2024 Washer | Sealing and load distribution | Steel, stainless steel | Flanged joints, pipe connections |
| ASTM F 436:2024 Inch Series Washer | Hardened load bearing | Carbon steel, alloy steel | Structural bolting, inch-series assemblies |
| DIN 93:1974 Washer | Spring tension and vibration take-up | Spring steel | Machinery, automotive, electrical |
| DIN 463:1974 Washer | Sealing and surface protection | Steel, stainless steel | General engineering, enclosures |
| DIN 443:2017 Washer | Load distribution and wear protection | Steel, stainless steel | Heavy machinery, rail |
| DIN 5405 (-3):2016 Washer | Bearing preload and axial location | Spring steel, stainless steel | Gearboxes, pumps, bearing housings |
| DIN 6311:2002 Washer | Angular compensation | Steel, stainless steel | Non-perpendicular bolted connections |
| DIN 42013:1988 Wave Spring Washer | Axial spring force, low stack height | 65Mn spring steel | Compact assemblies, contact maintenance |
| Countersunk Head Washer | Flush bearing surface | Steel, stainless steel | Thin panels, furniture hardware |
| Composite Gaskets | Fluid and weather sealing | Rubber-metal composite | Fluid fittings, roofing, outdoor enclosures |
Materials, Finishes, and Critical Specifications
Washer performance depends on the interaction between material grade, hardness, thickness, and surface condition. We produce specialty washers in carbon steel, stainless steel, spring steel, rubber, and composite materials, with post-treatment options that include hot-dip galvanizing and blackening.
- Material grade: Carbon steel, stainless steel (including 304 and 316 families), spring steel such as 65Mn, low-alloy steel, rubber, and composite sheet.
- Hardness and temper: Controlled for spring and wavy profiles to maintain repeatable axial force without cracking during installation.
- Dimensions: Inner diameter, outer diameter, thickness, corrugation height, and conical angle held to drawing or standard tolerance.
- Surface finish: Zinc plating, hot-dip galvanizing, blackening, and passivation selected for corrosion exposure and mating surface compatibility.
- Sealing performance: Rubber hardness, compression set, and bond integrity between elastomer and metal insert for composite and neoprene-faced washers.
How We Configure Specialty Washers for Your Assembly
Configuration starts with the joint condition, not the catalog number. We review the bolt grade, clamped material, surface angle, sealing requirement, and operating temperature before recommending a profile. For custom work, we develop and manufacture from drawings or samples.
We match washer thickness and hardness to the bolt preload so the washer does not crush, dish, or relax under service load.
For composite and rubber-faced washers, we confirm media, pressure, and temperature to select the elastomer and bond system.
Spherical and beveled sets are specified by the misalignment angle and bolt diameter to keep the bearing surface square to the load.
Material and coating are selected for indoor, outdoor, or chemical exposure, including dissimilar-metal contact with the mating fastener.
Quality Control and Acceptance Testing
We implement total quality management throughout production, with inspection after each process and 100% final inspection of finished products in accordance with customer requirements and international standards. Our laboratory is equipped with a spectrometer, CMM, X-ray flaw detector, and other testing equipment for chemical composition, mechanical properties, non-destructive testing, and geometric dimensions.
- Chemical composition verification by spectrometer for each material heat.
- Dimensional inspection by CMM for critical diameters, thickness, and profile geometry.
- Mechanical property checks including hardness and spring force where applicable.
- Non-destructive testing by X-ray for internal soundness on selected parts.
- Final inspection reports and certificates issued against the agreed specification.
Related Fastener Categories We Supply
Specialty washers are often specified alongside other fasteners in the same assembly. We manufacture and supply a coordinated range so that washer, bolt, and nut specifications remain compatible across the joint.
- Washers — the full family including plain, spring, lock, retaining rings, and specialty profiles.
- Plain Washers — general load distribution and surface protection under bolt heads and nuts.
- Spring Washers — split ring and curved types for vibration resistance and preload maintenance.
- T-Nuts — threaded inserts for wood, furniture, and panel assemblies where a washer may also be required.
Information We Use to Configure Your Solution
To prepare an accurate proposal for specialty washers, we need the joint and service conditions rather than a part number alone. The following inputs allow us to select or design the correct profile, material, and finish.
| Project Input | Why We Need It |
|---|---|
| Bolt or screw size and grade | Determines inner diameter, bearing area, and required preload capacity. |
| Joint material and surface condition | Affects washer hardness, coating compatibility, and risk of galvanic corrosion. |
| Sealing media, pressure, and temperature | Selects elastomer type and bond system for composite and rubber-faced washers. |
| Misalignment angle or joint geometry | Specifies spherical or beveled washer sets for angular compensation. |
| Annual volume and delivery schedule | Aligns production planning, packaging, and shipping method with your build rate. |
| Drawing or sample for custom profiles | Allows us to develop tooling and confirm dimensions before batch production. |
Packaging, Logistics, and Documentation
We provide flexible packaging solutions including retail kits, blister packs, custom boxes, and export cartons. Our location within a short drive of Shanghai and Ningbo ports supports efficient sea freight, with air freight available for urgent deliveries. Documentation is prepared to match the agreed specification and destination requirements.
- Bulk export cartons, labeled and palletized to your warehouse or retail requirements.
- Retail-ready packaging for distributors serving hardware and furniture channels.
- Inspection certificates and material reports issued with the shipment.
- DDP shipping options available to deliver goods directly to your door.
Frequently Asked Questions
What types of Other Washers does Better Fastener manufacture?
We produce wavy washers, conical washers, sealing washers, composite gaskets, countersunk head washers, and angular compensation washer sets. Standard profiles include DIN 434, DIN 93, DIN 463, DIN 443, DIN 5405, DIN 6311, DIN 42013, and ASTM F 436, with custom geometries developed from drawings or samples.
Which materials are available for specialty washers?
We manufacture in carbon steel, stainless steel, spring steel such as 65Mn, low-alloy steel, rubber, and composite materials. Surface treatments include zinc plating, hot-dip galvanizing, blackening, and passivation, selected according to corrosion exposure and mating surface compatibility.
Can you produce custom washer profiles from a drawing?
Yes. Customized production is our core business. We develop and manufacture products based on the drawings or samples you provide, including non-standard diameters, thicknesses, corrugation patterns, and elastomer-faced configurations.
How do you ensure washer quality before shipment?
We apply total quality management with inspection after each process and 100% final inspection of finished products. Our laboratory uses a spectrometer, CMM, X-ray flaw detector, and other equipment to verify chemical composition, mechanical properties, non-destructive soundness, and geometric dimensions.
What information do you need to quote a specialty washer order?
We need the bolt size and grade, joint material, sealing media and temperature if applicable, misalignment angle for angular compensation, annual volume, delivery schedule, and a drawing or sample for custom profiles. This allows us to confirm the correct profile, material, finish, and packaging.
Do you supply washers alongside bolts and nuts for complete assemblies?
Yes. We manufacture and supply a coordinated fastener range that includes bolts, nuts, washers, screws, and other fasteners. This allows a single supply program to cover the full joint, with compatible materials and finishes across all components.
