What advantages do you have?

1. Strict QC: We inspect every order before shipping. 2. Shipping: We have a shipping department and forwarder to promise faster delivery and protect goods well. 3. Professional production of metal box drawer systems, hinges, and furniture fittings.

What materials and standards do you support?

We use premium carbon steel with grades ranging from DIN Gr.4.6 to 12.9 and SAE Gr.2, 5, 8. We support DIN, ASTM/ANSI, JIS, EN, ISO, AS, and GB standards.

Is customization available?

Yes, we offer customization for size (M1.6-M64), surface treatment (Zinc, Plain, HDG, etc.), and non-standard specifications. Lead time for customized items is 30-60 days.

Sealcon 300PCS Kit with Flat Sealing Copper Gasket/Washer

Name: Sealcon 300PCS Kit with Flat Sealing Copper Gasket/Washer
Brand: Handan Haosheng Fastener Co., Ltd.
SKU: 2204164185

Hebei, ChinaHandan Haosheng Fastener Co., Ltd.

US$0.01-0.25

1,000 Pieces

Sample price:US$0.10/piece.Request sample

Product profile

Customization

Available

Type

Flat Gasket

Material

Carbon Steel

Model NO.

Flat Washer

Combination Washer Structure

A Type

Spring Washer Type

Standard

DIN/ASME/GB/JIS/Non-Standard

Surface Treatment

Zinc, Plain,HDG,Phosphorization,Black

Size

M1.6-M64

Delivery Time

Negotiable

Sample

Avaiable

Place of Origin

Hebei,China

Name

Flat Washer

Packing

Customer Requset

Transport Package

Box Packing+Carton

Specification

As Your Requests

Trademark

YFN

Origin

Handan

HS Code

7318290000

Production Capacity

30ton/Day

Key features

Customizable Specifications: Supports DIN/ASME/GB/JIS standards with customizable size, surface treatment, and non-standard options.

Premium Material Quality: Made from high-grade carbon steel (Gr.4.6 to 12.9) with precise heat treatment for superior durability.

Professional OEM/ODM Service: Accepts OEM and ODM orders with competitive pricing and tailored solutions for diverse customer needs.

Strict Quality Control: Features professional QC teams inspecting every item from production to packaging, backed by advanced testing labs.

Smooth Burr-Free Finish: Surface is smooth without burrs, ensuring neat threads, uniform force distribution, and slip resistance.

Diverse Surface Treatments: Offers Zinc (Yellow/White/Blue), Black Oxide, HDG, Geomet, Dacroment, and Nickel plating options.

Fast Delivery & Shipping: Standard lead time is 30-35 days after deposit; professional shipping department ensures fast and safe delivery.

Free Sample Available: Provides free samples for standard fasteners to allow customers to test quality before placing orders.

Company profile

Cooperated with Fortune 500Experienced TeamManagement CertificationImporters and Exporters

Handan Haosheng Fastener Co., Ltd.

Hebei, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2008-04-01Nearest Port: TIANJIN, QINGDAO, YIWUAverage Response Time: ≤0.47hTerms of Payment: T/T, PayPal, Money Gram, etc.

AI-Powered supplier vetting

SummaryHandan Haosheng Fastener Co., Ltd. is a China-based limited company established in 2007 with 103 employees and a stated scope covering processing and sales of standard parts and power fittings. It demonstrates broad customization, ODM, recent product development, OEM service for known brands, documented quality procedures, five quality inspectors, and production equipment for annealing, forming, drawing, heading, screw making, and tempering. Service support is comparatively limited: there is no reported inventory, overseas warehouse, showroom, overseas agent or branch, and no valid manufacturing-capacity contract with related subcontractors. Complaint handling has a procedure but lacks written records. ERP integration is reported, while certification holdings and detailed customer references are not provided. Financial assessment is limited because the supplied financial records are incomplete and are not evaluated here with monetary figures.

Supplier typeThe supplier is identified as Handan Haosheng Fastener Co., Ltd., a Chinese limited company located in Handan, Hebei, established in 2007, with 103 employees. Its stated business scope is processing and sales of standard parts and power fittings, subject to required approvals for restricted activities.

After-Sales capabilityThe supplier has a corrective and preventive action procedure with follow-up records and written service-assessment procedures, but complaint handling has no written records. It reports no inventory, overseas warehouse, showroom, overseas agent, or branch, and lists zero countries with overseas services; it has participated in Fastener Fair Global 2025 and can serve through stated trade terms.

R&D capabilityThe supplier reports new products during the past year, provides ODM services and multiple customization routes, and uses an ERP system for production, procurement, quality control, and logistics digitization. However, no usable SDK is available, which limits evidence of software-development integration capability.

Production capacityProduction evidence includes five quality inspectors, dedicated equipment for annealing, shooting, drawing, cold heading, screw making, and tempering, plus uniformly followed finished-product inspection instructions and a one-month stated lead time in both peak and off-season. The absence of a valid manufacturing-capacity contract with related subcontractors is a documented control weakness.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization. The same broad capability is reported in both R&D and design-capability records, indicating a strong stated ability to adapt products to customer requirements.

Product Q&A

Q:Are you a manufacturer or trading company?

We are a professional manufacturer with 30 years of experience. We accept OEM and ODM as per your needs and assure competitive prices and quality.

Q:Can you offer samples?

Yes, we can offer samples for you to test and check quality.

Q:How does your factory handle quality control?

We have a professional QC team to inspect each item from the production links to packaging. For each order, strict inspection is carried out by the QC department before shipping to avoid bad quality.

Q:What is your delivery time?

Normally it will take 30-35 days after receiving your deposit.

Q:What are your terms of payment?

T/T 30% as deposit, and 70% balance before delivery.