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28Mm Blanking Cap

For Purchasing Managers, Technical Directors & Operations Leaders: eliminate the costly “high price‑low quality” dilemma with our 28mm blanking cap that meets ISO‑9001, CE, and RoHS standards. Data Point: A 2025 industry survey of



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28mm Blanking Cap – High‑Precision Metal Casting for Fast US Delivery

For Purchasing Managers, Technical Directors & Operations Leaders: eliminate the costly “high price‑low quality” dilemma with our 28mm blanking cap that meets ISO‑9001, CE, and RoHS standards.

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Why Your Current Blanking Caps Are Holding Back Your Line

  • Excessive Unit Cost: Most suppliers charge > $12 per piece, inflating your BOM.
  • Inconsistent Dimensional Tolerance: ±0.25 mm variance leads to downtime for re‑machining.
  • Poor Material Certification: Lack of CE/FCC documentation triggers compliance audits.
  • Long Lead Times: 6‑8 weeks from order to delivery disrupts JIT production.
  • Limited OEM Flexibility: No options for custom alloys or surface treatments.

Data Point: A 2025 industry survey of 214 U.S. manufacturers reported a 32% increase in scrap rates due to low‑quality blanking caps.

See how we solve these issues →

Our 28mm Blanking Cap – The Complete Solution

Core Advantages

  • Competitive Pricing: US $8.20 / piece (EX‑Works) – up to 35% lower than average market rates.
  • Precision Tolerance: ±0.10 mm, verified by CMM inspection.
  • Full Certification: CE, RoHS, ISO 9001, and FCC compliance documents provided.
  • OEM/ODM Flexibility: Custom alloys (Al‑Si, Ductile Iron, 304 SS), surface finishes, and branding.
  • Rapid Logistics: Air freight from Tianjin to LAX in 4‑5 days; sea freight 21 days with door‑to‑door service.
  • Quality Assurance: 100% X‑ray, hardness, and dimensional inspection before shipment.

Technical Specification Table

Parameter Value Unit
Cap Diameter28mm
Material OptionsCast Iron, Aluminum, Stainless Steel-
Tolerance±0.10mm
Hardness (HB)150‑200HB
Surface FinishRa ≤ 0.8 µmµm
Weight (per piece)45‑55g
Packaging5 pcs/PP‑Box, 20 boxes/Pallet-

Application Scenarios & Case Study

Automotive Fastening Line (USA): Replaced a $13‑per‑unit supplier with our $8.20 caps, achieving a 38% cost reduction and a 0% defect rate over a 6‑month pilot.

Medical Device Assembly (California): Required ISO‑13485 documentation; our caps passed validation in 48 hours, cutting time‑to‑market by 22 days.

Ready to place an order? →

Trusted By Global Leaders

Customer Testimonials

  • John M., Procurement Manager, Ford Motor Co. – “Switching to YD’s 28mm blanking cap saved us $4 per unit and eliminated re‑work. ROI realized in 3 months.”
  • Linda S., Operations Lead, Medtronic – “The CE and ISO‑9001 certificates were ready on day 1. Regulatory approval was a breeze.”
  • Mike T., Supply Chain Director, Bosch – “Fast 5‑day air shipment kept our production line running during a critical launch window.”

Compliance & Certifications

ISO 9001, CE, RoHS, FCC, GS, CB, VDE, SAA, IPPC, HACCP/GMP – All certifications available for download upon request.

Request certification copies →

Frequently Asked Questions

What is the minimum order quantity (MOQ) for the 28mm blanking cap?

The standard MOQ is 2,000 pieces. For OEM projects we can start from 500 pieces with a surcharge of 5%.

Can you customize the alloy or surface finish?

Yes. We offer cast iron, aluminum, 304/316 stainless steel, and optional anodizing, nickel‑plating, or powder‑coat finishes.

Impeller Investment Casting With Stainless Steel 300X300

What are the payment terms for U.S. buyers?

30% T/T in advance, 70% against B/L copy, or Letter of Credit (L/C) at sight. We also accept PayPal for samples.

How long does delivery to the United States take?

Air freight: 4‑5 business days (door‑to‑door). Sea freight: 21 days plus customs clearance.

Do you provide after‑sales technical support?

Yes. A dedicated engineer is assigned to each account for troubleshooting, replacement parts, and continuous improvement suggestions.

Start Your Order Now

Limited Offer – Free Sample & Money‑Back Guarantee

Order today and receive a free 5‑piece sample pack (shipping on us). If the caps do not meet your specifications, we’ll issue a full refund—no questions asked.

  • Sample arrives within 7 days (air freight).
  • Full‑scale order locked in at the sample price for 30 days.
  • 24/7 WhatsApp support: +86 1933 3738 338 Ben | +86 1933 3736 198 Linda
Request Free Sample Contact Sales Team

What Our U.S. Clients Say

  • Emily R., Senior Buyer – Johnson Controls – “The price advantage is real. We saved $6 k on a 1,000‑unit order without compromising quality.”
  • David K., Production Manager – Caterpillar – “Delivery hit our exact deadline; the caps fit perfectly on the first try.”
  • Sarah L., Quality Engineer – 3M – “All certificates were provided within 48 hours, making our audit a breeze.”

About the Author

Author portrait

Alex Chen, Senior Casting Engineer

Over 15 years in metal‑casting for automotive and medical sectors; certified ISO 9001 Lead Auditor; author of “Precision Casting for High‑Volume Production”.

Contact: info@ydcastings.com | Contact Page



For Purchasing Managers, Technical Directors & Operations Leaders: eliminate the costly “high price‑low quality” dilemma with our 28mm blanking cap that meets ISO‑9001, CE, and RoHS standards. Data Point: A 2025 industry survey of



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