Brass Cup Washers, Brass Screw Cups

Brass Cup Washers & Brass Screw Cups – Trusted by US Buyers | India Manufacturer & Exporter

American engineers, OEM procurement managers, and hardware distributors trust Conex Screws and Fasteners as their go-to overseas source for Brass Cup Washers and Brass Screw Cups. We have been supplying the US market for over 30 years — understanding American quality expectations, ASTM material standards, imperial sizing conventions, and the fast-turnaround demands of US manufacturing. Whether you’re sourcing for furniture OEMs in North Carolina, marine hardware distributors in Florida, or electrical enclosure makers in Texas, our brass cup washers deliver consistent quality, competitive FOB pricing, and documentation that clears US Customs without delays.

Our brass screw cups — also called finishing washers, countersunk finishing washers, or decorative cup washers — are the perfect sub-component for applications where a clean, polished screw head presentation matters. From cabinetry and marine joinery to NEMA enclosures and architectural woodwork, these small but important components do the heavy lifting aesthetically and functionally.

Why US Buyers Choose Conex

• ASTM-Compliant Material Grades: We stock and press from ASTM B36 certified brass coil — C26000, C27200, C28000 — with mill test certificates (MTCs) that satisfy US quality audits.
• Imperial & Metric Sizes: We supply cup washers sized for US standard screws (#4, #6, #8, #10, #12, 1/4″, 5/16″, 3/8″) as well as metric for dual-standard designs.
• Section 232 & Tariff-Smart Sourcing: As an Indian exporter, our brass products generally attract lower US import duties than comparable goods from certain other countries — making Conex a cost-effective compliant source.
• US Documentation Ready: COO (India), commercial invoice, packing list, ASTM MTC, RoHS declaration, and SDS — everything your compliance and AP teams need.
• Fast Ocean & Air Freight: Regular LCL and FCL consolidations from Mundra/JNPT to East Coast (New York, Baltimore, Savannah) and West Coast (Los Angeles, Long Beach) ports. Air freight available for urgent orders.
• California Prop 65 Awareness: We can supply low-lead / lead-free brass alloys suitable for applications requiring Prop 65 compliance labeling considerations.

What Are Brass Cup Washers / Brass Screw Cups?

A brass cup washer (also known in the US trade as a brass screw cup, finishing washer, or countersunk finishing washer) is a cup-shaped pressed brass component designed to seat around the head of a countersunk or oval-head screw. It protects the substrate material from damage during fastening, hides surface imperfections, and delivers a polished, professional look. These are widely used across US industries including furniture manufacturing, yacht and marine joinery, RV interiors, architectural millwork, electrical panel assembly, and consumer hardware.

Key Features and Benefits

• Decorative Brass Finish: Warm golden appearance suits American architectural and interior hardware aesthetics — works with traditional and contemporary design styles.
• Corrosion Resistance: Brass naturally resists rust and oxidation in indoor and moderate outdoor environments — preferred over steel in coastal states.
• ASTM Grade Material: Pressed from ASTM B36 certified brass strip in C26000, C27200, or C28000 grades per customer specification.
• Precision Pressed: High-speed progressive die tooling ensures tight tolerances and burr-free edges — meeting US quality incoming inspection standards.
• RoHS & Prop 65 Compatible Grades Available: Low-lead brass options for environmentally sensitive US applications.
• Custom to Your Drawing or US Standard: ASME B18.22.1, SAE, or customer-specific specs — we match your documentation.

Material Grades & US / International Equivalents

US Imperial & Metric Size Chart – Brass Cup Washers

We supply to ASME B18.22.1 or customer drawings in both imperial (inch) and metric dimensions. Just specify your preferred unit system when requesting a quote.

Performance Metrics

• Hardness: 60–90 HV (Vickers) — approx. 55–83 HRB Rockwell B scale
• Tensile Strength: 46,000–61,000 psi (318–420 MPa) — annealed to half-hard condition
• Elongation: 20–45% (annealed)
• Surface Finish: Bright polished, natural brass, lacquered, nickel-plated, or per customer spec
• Dimensional Tolerance: ±0.002″ (±0.05 mm) standard; tighter on request
• Temperature Rating: Up to 390°F (200°C) continuous service
• ASTM Compliance: Material sourced to ASTM B36 with certified MTCs

Our Technical Expertise — 30+ Years Serving the US Market

Since the early 1990s, Conex Screws and Fasteners has been a dependable manufacturing partner for American importers and OEMs. We understand what US buyers expect: ASTM-certified materials, clean burr-free edges, consistent lot-to-lot quality, and paperwork that sails through US Customs. Our in-house tool room designs and manufactures progressive dies for any cup washer geometry — from standard #4 to #12 US screw sizes, to fully custom profiles for specialty applications. We support FAI (First Article Inspection) documentation, COC (Certificate of Conformance), and can arrange third-party pre-shipment inspection (SGS, Bureau Veritas, Intertek) for buyers who require it.

Related Search Terms

Brass cup washers USA, brass screw cups supplier USA, brass finishing washers ASTM, countersunk finishing washers American standard, brass cup washers #8 #10 #12, brass screw cups wholesale USA, decorative cup washers brass, furniture finishing washers brass, brass cup washers C26000, import brass cup washers India, brass pressed parts USA buyer, brass washers ASME B18.22.1

US-Compliant Export Packaging

All brass cup washers are packed in sealed polybags sorted by US screw size (#4, #6, #8, etc.), labeled in English with ASTM grade, size in US units (with metric equivalent), quantity, and lot number. Outer cartons meet ISPM-15 phytosanitary standards for US import clearance. We provide ISF (Importer Security Filing) data and shipper’s letter of instruction (SLI) support. Packing can be customized for Amazon FBA, big-box retail, or bulk industrial delivery.

Why US Buyers Choose Conex Over Domestic or Chinese Sources

• 30+ Years US Export Track Record: Established relationships with US importers, distributors, and OEMs across all major industries.
• ASTM Material Certification: Full MTC documentation — not just a claim, but a certified mill test report your QC team can verify.
• Faster Turnaround than Many US-Based Distributors: Our in-house tooling means we don’t wait on third parties — we schedule, press, inspect, and ship directly.
• Tariff-Competitive from India: Indian origin brass parts often attract lower Section 301 / Section 232 tariff rates compared to Chinese-origin goods — ask us for HS code guidance.
• Flexibility to Customize: US special sizes, custom angles, non-standard ODs, private label — we say yes where others say no.
• Excellent English Communication: Our US-facing sales team operates on US business hours overlap, responds to emails same day, and speaks your technical language.
• Competitive USD Pricing: We quote in USD, accept T/T wire transfer and LC, and work with US freight forwarders of your choice.

What Separates Conex from Other Overseas Manufacturers

Many US buyers have experienced the frustration of ordering from overseas suppliers who send substandard goods, provide fake MTCs, or go silent after payment. Conex’s 30-year reputation in the US market is built on doing the opposite: every MTC is genuine and traceable to the mill, every dimension is verified against your drawing before shipment, and our team stays communicative from PO to delivery confirmation. We also welcome third-party pre-shipment inspections — because we’re confident every batch will pass. Our references from current US buyers are available on request.

US Industry Applications

• Furniture & Cabinetry Manufacturing (NC, CA, TX, VA) — decorative screw cups for high-end wood furniture and cabinetry
• Marine & Boat Building (FL, ME, WA) — corrosion-resistant brass cups for marine joinery and interior fittings
• Electrical Enclosures & Panel Manufacturing (NEMA rated panels) — brass screw cups for clean panel assembly
• RV & Specialty Vehicle Manufacturing (IN, TX) — lightweight brass hardware for interior trim
• Architectural Millwork & Joinery — decorative finishing for custom woodwork installations
• Hardware Distributors & Importers (nationwide) — bulk stock for resale and MRO supply

Frequently Asked Questions – US Buyers

Q1. Do your brass cup washers meet ASTM standards?

Yes. We manufacture from ASTM B36 certified brass strip (C26000, C27200, C28000) and provide mill test certificates (MTCs) that confirm chemical composition and mechanical properties to ASTM specifications.

Q2. Can you supply brass cup washers in US screw sizes (#4 through 3/8″)?

Absolutely. We stock and manufacture to standard US screw sizes — #4, #6, #8, #10, #12, 1/4″, 5/16″, and 3/8″ — with dimensions in both inch and millimeter. Custom sizes to customer drawings are also available.

Q3. What are the import duties on brass cup washers from India to the USA?

Brass cup washers from India typically fall under HTS Code 7415.21.0000 or 7415.29.0000 (copper/brass bolts and similar). Indian-origin goods generally do not attract Section 301 tariffs (which apply primarily to Chinese goods). We recommend consulting your customs broker for the exact duty rate applicable to your HTS classification.

Q4. Can you provide a Certificate of Origin (COO) for US Customs?

Yes. We provide a Form COO issued by the Indian Chamber of Commerce or Export Promotion Council, which is accepted by US Customs & Border Protection (CBP) for tariff preference verification.

Q5. Do you offer low-lead or Prop 65 compliant brass?

Yes. We can supply low-lead brass alloys (lead content <0.25%) suitable for California Prop 65 compliance considerations. Please specify your requirement at inquiry stage.

Q6. What is the minimum order quantity for US buyers?

MOQ is typically 1,000 pieces per size for standard items. For US buyers placing their first order, we are flexible — contact us to discuss trial order arrangements.

Q7. Do you support Amazon FBA or direct-to-warehouse delivery in the US?

We can pack and label to Amazon FBA requirements or your warehouse specifications. Coordination with your US freight forwarder or 3PL is straightforward — just provide us the delivery instructions.

Q8. What ports do you ship to in the USA?

We ship regularly to Los Angeles (Long Beach), New York/New Jersey, Baltimore, Savannah, Houston, and Seattle via sea freight (LCL/FCL). Air freight to any US gateway airport is available for urgent orders.

Q9. Can you arrange third-party pre-shipment inspection in India?

Yes. We work with SGS, Bureau Veritas, and Intertek for pre-shipment inspection. The cost is typically covered by the buyer and coordinated by us at the factory.

Q10. What payment terms do you offer US buyers?

We accept T/T (wire transfer) — typically 30% advance with balance before shipment for new buyers. Established buyers may qualify for open account or Letter of Credit (LC) terms. We invoice in USD.

Q11. How long does sea freight take from India to the US East/West Coast?

Sea freight transit is typically 18–25 days to US West Coast ports (LA/Long Beach) and 22–30 days to East Coast ports (New York, Savannah, Baltimore). Air freight delivers in 5–7 business days.

Q12. Can you supply brass cup washers with nickel or chrome plating for US residential hardware use?

Yes. Nickel-plated and chrome-plated brass cup washers are available — popular in US residential hardware, bathroom fixtures, and furniture applications.

Q13. Are your brass alloys RoHS compliant for US electronics customers?

Yes. Our standard brass alloys meet RoHS Directive requirements. RoHS compliance declarations are provided on request.

Q14. Can you handle blanket orders with scheduled releases for US OEM buyers?

Yes. We accommodate blanket purchase orders with scheduled monthly or quarterly releases — allowing you to lock in pricing while drawing stock as needed.

Q15. How do I get a quote for brass cup washers for our US company?

Email us your screw size, quantity, ASTM grade preference, finish, and delivery port. We respond within 24 hours with a detailed USD quotation including estimated FOB, CIF, or DDP pricing options.

Customer Testimonials

“We’ve been importing brass screw cups from Conex for our custom furniture line for 7 years. Their ASTM MTCs are always accurate, the dimensions are spot-on for our #8 and #10 screws, and they’ve never missed a shipment deadline. By far the best overseas brass supplier we’ve worked with.”

— James Thornton, VP Procurement, Furniture OEM, North Carolina, USA

“As a marine hardware distributor on the Gulf Coast, we stock a wide range of brass cup washers for our boat builder customers. Conex gives us reliable quality, competitive FOB pricing from India, and great communication. Our customers haven’t had a single complaint about the product quality in five years.”

— Michael Hargreaves, Owner, Marine Hardware Distributors, Florida, USA

Glossary of Terms Used in the US Trade

Cup Washer / Screw Cup

A cup-shaped pressed washer that seats around a countersunk screw head — also called finishing washer or decorative washer in the US trade.

ASTM B36

The American Society for Testing and Materials standard for copper and copper-alloy sheet, strip, and rolled bar — covers C26000, C27200, C28000 and other brass alloys.

ASME B18.22.1

American Society of Mechanical Engineers standard for plain washers (inch series) — the primary US dimensional standard for washers.

HTS Code

Harmonized Tariff Schedule code — used by US Customs to classify imported goods and determine applicable duty rates. Brass fasteners typically fall under Chapter 74.

Section 301 Tariffs

Additional US tariffs applied to goods originating from China — Indian-origin brass parts are generally not subject to Section 301, making India a tariff-advantaged source.

MTC (Mill Test Certificate)

A quality assurance document issued by the material mill certifying that the metal meets the required chemical and mechanical specifications per the applicable ASTM or other standard.

COC (Certificate of Conformance)

A document signed by the manufacturer confirming that the supplied goods meet all specified requirements — required by many US defense, aerospace, and industrial buyers.

FOB (Free On Board)

An INCOTERM where the seller delivers goods to the named port of shipment — commonly used in US import transactions. The buyer arranges ocean freight from the Indian port.

Prop 65

California Proposition 65 — requires businesses to provide warnings before knowingly exposing individuals to chemicals listed as causing cancer or reproductive toxicity, including lead in brass alloys above threshold levels.

Related Parts: Brass flat washers ASTM, brass spring washers, brass fender washers, brass penny washers, brass countersunk washers, brass tab washers, brass lock washers, brass formed washers, brass decorative washers, brass finishing washers, brass stamped components, brass pressed parts USA, brass screw cups nickel plated, brass cup washers #8 USA, brass cup washers #10 USA, brass washers import India

Ready to Source? Request a US-Specific Quote Today!

Join hundreds of US buyers who trust Conex Screws and Fasteners for their brass cup washer and screw cup requirements. With ASTM-certified materials, imperial sizing, tariff-smart Indian origin, and 30+ years of US export experience, we’re the overseas manufacturing partner American businesses rely on.

📧 Email your RFQ today — USD quote, ASTM MTC, and FOB pricing within 24 hours.

✅ ASTM B36 certified  |  ✅ US screw sizes #4–3/8″  |  ✅ India-origin (tariff advantaged)  |  ✅ Pre-shipment inspection available  |  ✅ Ships to all US ports