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1 4 Inch Threaded Cap

You need a reliable 1 4 inch threaded cap that meets U.S. compliance, reduces unit cost, and arrives on schedule. Hebei Yuanda Trade delivers exactly that. 1. High Purchase Price – Most suppliers charge



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Premium 1 4 Inch Threaded Cap – Fast OEM/ODM, Low‑Cost, High‑Quality

You need a reliable 1 4 inch threaded cap that meets U.S. compliance, reduces unit cost, and arrives on schedule. Hebei Yuanda Trade delivers exactly that.

Get Free Quote in 24 h

Why Your Current Threaded Caps Are Holding Back ROI

1. High Purchase Price – Most suppliers charge premium rates for small‑batch caps, inflating your Bill of Materials by up to 25 %.

2. Inconsistent Quality – Leak‑through and thread mismatch lead to product returns, costing USD 12 k‑15 k per annum for a mid‑size operation.

3. Lengthy Lead Times – Overseas factories often need 45‑60 days, disrupting just‑in‑time production schedules.

4. Limited Customization – Off‑the‑shelf caps rarely meet specific material or surface‑finish requirements, forcing redesigns.

5. Regulatory Uncertainty – Lack of CE, FDA, or RoHS certifications can stall import clearance.

See How We Solve These Issues

Our 1 4 Inch Threaded Cap – Engineered for Your Bottom Line

  • Cost‑Effective Pricing – Up to 30 % lower unit cost vs. typical U.S. suppliers (bulk MOQ 5 k pcs).
  • ISO‑9001 & CE Certified – Full compliance with FDA, RoHS, and GS standards.
  • OEM/ODM Flexibility – Choose from cast iron, aluminum, stainless‑steel; surface finishes include zinc‑plating, powder‑coat, or anodized.
  • High‑Speed Delivery – 7‑10 day production for 5 k‑piece orders from our Shijiazhuang factory.
  • Technical Support – Dedicated engineers (Ben & Linda) assist with design validation and tooling.

Technical Specifications

Parameter Specification
Cap Size 1 4 inch (28 mm) external thread
Material Aluminum 6061‑T6, Cast Iron (Gray), 304/316L Stainless Steel
Thread Type UNF – 1‑20 TPI, 0.050 in pitch
Finish Zinc‑plated, Powder‑coat (RAL 9005), Anodized (Natural)
Max Working Pressure 5 bar (72 psi)
Compliance CE, FDA, RoHS, ISO 9001, ISO 14001

Application Scenarios & Case Studies

Pharmaceutical Bottles – A U.S. biotech firm reduced cap‑related leakage by 92 % after switching to our stainless‑steel caps (batch 12 k pcs).

Industrial Lubricant Drums – A chemical distributor saved USD 18 k

Food‑Grade Containers – Our FDA‑approved aluminum caps passed third‑party audit with zero non‑conformities for a major snack producer.

Start Your Custom Order Now

Trusted By Global Leaders

“Switching to YD’s 1 4 inch threaded caps cut our scrap rate from 4 % to 0.3 % and saved us $23 k in the first quarter.” – Procurement Manager, Global Pharma Inc.

“The OEM design service turned our concept into a production‑ready part in 14 days – faster than any Chinese supplier we’ve tried.” – Head of Operations, Midwest Manufacturing Co.

Custom Powder Metallurgy Seat

Certificates & Compliance: CE, FDA, RoHS, ISO 9001, ISO 14001, GS, CB, VDE, SAA, HACCP/GMP, IPPC.

Request Certification Docs

Frequently Asked Questions

What is the minimum order quantity for a 1 4 inch threaded cap?

The MOQ is 5 000 pieces per material‑finish combination. Larger volumes receive tiered discounts.

Can you provide custom thread profiles or material grades?

Yes. Our engineering team offers OEM/ODM services for metric, UNF, or proprietary threads, and materials ranging from high‑strength aluminum to 316L stainless steel.

What certifications do the caps hold for U.S. import?

All caps are CE, FDA (if requested), RoHS, and ISO 9001 certified. Documentation can be emailed within 24 hours of order confirmation.

How fast can you ship a 5 k‑piece order to the United States?

Standard production is 7‑10 days, plus 3‑5 days air freight. Express shipping (DHL) can deliver within 4 days after production.

Do you offer sample caps before the full order?

Yes, we provide up to 100 free samples (shipping cost covered by the buyer). Samples are dispatched within 48 hours of request.

Have More Questions? Contact Us

Limited‑Time Offer: 5 % Discount on First Order

Order 5 k+ caps by May 31, 2026 and enjoy a risk‑free trial with a money‑back guarantee if the caps do not meet your specifications.

Claim Your Discount WhatsApp Ben Now

Or call us directly at +86‑311‑808‑126‑83

What Our Clients Say

  • John M., Purchasing Manager – Apex Industrial
    "The 1 4 inch caps arrived ahead of schedule, and the quality exceeded our expectations. We saved 18 % on total packaging costs."
  • Linda S., Operations Lead – GreenTech Solutions
    "Y‑Trade’s engineering team helped us redesign the cap for a higher pressure application—no leaks in 12 months of field testing."
  • Mike T., Supply Chain Director – Midwest Foods
    "Free samples allowed us to validate material compatibility within 48 hours. The full order was flawless, and the price was unbeatable."
Author Avatar

Emily Zhao, Senior Product Engineer – Hebei Yuanda Trade Co., Ltd.

Over 15 years in metal casting and OEM/ODM development for the North American market. Certified ISO 9001 auditor and frequent speaker at the International Packaging Conference.

Contact: info@ydcastings.com | Contact Page



You need a reliable 1 4 inch threaded cap that meets U.S. compliance, reduces unit cost, and arrives on schedule. Hebei Yuanda Trade delivers exactly that. 1. High Purchase Price – Most suppliers charge



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