At Ananka Fasteners Pvt Ltd, we engineer, manufacture, and supply premium Naval Brass C46400 (UNS C46400) Flat Washer built for demanding service. Tin-bearing brass with improved resistance to dezincification for marine hardware and fasteners. This technical datasheet covers the precise dimensional tolerances per ASME B18.22.1 and the material requirements dictated by ASTM B21.
A Naval Brass C46400 Flat Washer distributes fastener load evenly across a joint while resisting the fretting and corrosion that carbon-steel washers are prone to in marine, electrical and outdoor service. The tables below provide the principal dimensions, equivalent material grades, chemical composition and mechanical properties covered by the technical data for this product.
Our flat washers are manufactured in standard and custom configurations, ensuring a precise fit for demanding structural, piping, and chemical-process applications.
| Product Name | Naval Brass C46400 Flat Washer | Material Category | Copper Alloy |
| Material Grade | Naval Brass C46400 (UNS C46400) | Fastener Spec | ASTM B21 |
| Dimension Spec | ASME B18.22.1 | Material Spec | ASTM B21 |
| Thread Standard | N/A (Plain Washer) | Thread Tolerance | Inside-diameter tolerance per standard |
The ASME B18.22.1 specification governs the physical geometry of this product. The tolerances below ensure a secure, reliable mate under service loads. ASME B18.22.1 governs Type A plain (flat) washers.
| Nominal Size (in) | Inside Diameter (in) | Outside Diameter (in) | Thickness (in) |
|---|---|---|---|
| 1/4″ | 0.281 | 0.625 | 0.065 |
| 5/16″ | 0.344 | 0.688 | 0.065 |
| 3/8″ | 0.406 | 0.812 | 0.065 |
| 1/2″ | 0.531 | 1.062 | 0.095 |
| 5/8″ | 0.656 | 1.312 | 0.095 |
| 3/4″ | 0.812 | 1.469 | 0.134 |
| 1″ | 1.062 | 2.000 | 0.134 |
This dimensional series carries a chamfered outer edge and is the standard flat washer configuration for general assembly. Buyers should confirm the required nominal diameter, inside-diameter clearance class and outside diameter against the purchase drawing or applicable standard before ordering.
The UNS C46400 Flat Washer is manufactured from Naval Brass C46400, a copper alloy. The equivalent designations below assist with cross-referencing this material against European, British and other national standards.
| US / UNS | Werkstoff Nr. (DIN) | European (EN) | British Standard (BS) | Other / AFNOR |
|---|---|---|---|---|
| C46400 | 2.0530 (CuZn38Sn1) | CuZn38Sn1 | CZ112 | U-Z38 (AFNOR) |
This section details the chemical composition limits and minimum mechanical properties governing Naval Brass C46400 (UNS C46400) fasteners, as dictated by ASTM B21 (chemistry & mechanicals) and the raw bar/rod standard ASTM B21.
| Element | Composition, % |
|---|---|
| Copper | 59.0–62.0 |
| Tin | 0.5–1.0 |
| Lead, max | 0.20 |
| Zinc | Balance |
| Iron, max | 0.10 |
| Condition / Temper | Tensile Strength min, psi (MPa) | Yield Strength min, psi (MPa) | Elongation min, % | Hardness |
|---|---|---|---|---|
| Half-hard bar | 60 000 (415) | 27 000 (185) | 25 | – |
Our Naval Brass C46400 flat washers are specified across the following industries and service conditions, drawing on the material’s core strengths:
For applications exposed to highly aggressive acids or elevated temperature service, the material selection should be reviewed with the project engineer rather than choosing this alloy solely on its corrosion resistance.
Every batch of Flat Washers produced undergoes rigorous internal and third-party testing to ensure zero-defect delivery. We supply complete traceability with our global shipments.
For technical documentation and quotations, buyers can also review the Ananka Fasteners manufacturing and supply range or contact the team through the fastener enquiry and technical support page.
This datasheet references ASME B18.22.1 for dimensional requirements and ASTM B21 for material and fastener requirements. The applicable standard edition and purchase requirements should be confirmed for every project.
For ASME standards information, see the ASME standards catalogue. For ASTM International material and fastener specifications, see the ASTM International standards catalogue. These external references are provided for standards identification; the purchaser should verify the current edition applicable to the order.
A Naval Brass C46400 Flat Washer is a plain load-distribution washer manufactured from Naval Brass C46400 (UNS C46400). The product combines the ASME B18.22.1 dimensional geometry with the ASTM B21 material and fastener requirements.
The dimensional information in this datasheet is based on ASME B18.22.1, which governs the physical geometry of this product. The table above provides the principal dimensions listed for the Naval Brass C46400 product range.
Naval Brass C46400 is identified as UNS C46400. The equivalent designations listed in this datasheet include Werkstoff Nr. 2.0530 (CuZn38Sn1), EN CuZn38Sn1, British Standard CZ112, U-Z38 (AFNOR).
Naval Brass C46400 is a copper alloy known for good corrosion resistance combined with favourable machinability or fatigue performance. For applications exposed to highly aggressive acids or elevated temperature service, the material selection should be reviewed with the project engineer rather than choosing this alloy solely on its corrosion resistance.
The product information supports standard and custom configurations. For a quotation, provide the required material grade, nominal size, dimensional requirement, quantity, standard and any inspection or certificate requirements.
Need a Naval Brass C46400 Flat Washer for an industrial project? Send the required size, quantity, standard and certification requirements to Ananka Fasteners. Our team can review the requirement and provide technical and commercial information for standard or custom configurations.
Recommended RFQ details: Naval Brass C46400 / UNS C46400, nominal size, ASME B18.22.1 requirement, quantity, inspection requirements and EN 10204 certificate requirements where applicable.
