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High-Quality Spherical and Conical Washers for Reliable Performance
US$0.10
1,000-19,999 Pieces
US$0.78
20,000+ Pieces
Sample price:US$1.00/piece.Request sample
Product profile
Customization
AvailableMaterial
Carbon Steel,Stainless Steel,Aluminum,etcType
Hexagon HeadModel NO.
DIN6319Connection
Common BoltHead Style
HexagonalStandard
DIN, ANSI, GB, JISGrade
4.8Application
Machinery, Chemical Industry, Environmental, BuildingFinish
Color-Zinc PlatedSize
Metric,InchTransport Package
PE+CartonSpecification
M2 M3 M4 M5 M6Trademark
In-saiLOrigin
Shenzhen ChinaProduction Capacity
1000000Key features
Wide Material Selection: Available in Carbon Steel, Stainless Steel, Aluminum, and Brass based on requirements.
Custom Size Options: Supports Metric and Inch sizes, with custom specifications per customer requirement.
Multiple Finishes: Offers Zn/Ni/Tin/Au plating, Black Oxide, Anodizing, and other surface treatments.
Fast Delivery: Standard lead time is 1-2 weeks, with samples welcome and fast shipping options.
Comprehensive Certifications: ISO9001:2008, SGS, RoHS, Material Certification, and PPAP compliant.
24/7 Technical Support: Engineers available within half an hour with online service around the clock.
Extensive Product Range: Over 10,000 fastener specifications available for one-stop solutions.
Company profile

Business Type: Manufacturer/FactoryExport Year: 2008-06-30Average Response Time: ≤1.99hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, Others, FCA
AI-Powered supplier vetting
SummaryThe supplier is identified as Shenzhen In-sail Precision Parts Co., Ltd., a China-based limited company and manufacturer/factory in Shenzhen, Guangdong. It produces precision fasteners and parts, including thread inserts, CNC-machined components, pogo pins, press-fit connectors, and self-clinching standoff nuts. The available information indicates ISO 9000 and ISO 9001 management-system certifications, more than 10 production lines, 21–30 quality-control staff, and 41–50 years of cumulative R&D-engineer experience. Export activity is reported at 41%–50% of total sales, with exporting beginning in 2008 and including agent-assisted exports. The evidence supports production, quality-management, export, and R&D strengths, but does not sufficiently establish after-sales service, financial credibility, customization capability, or a broad customer track record.
Supplier typeThe supplier is described as Shenzhen In-sail Precision Parts Co., Ltd., a China-based limited company and manufacturer/factory located in Shenzhen, Guangdong. Its stated business focuses on precision fasteners and parts, although one slice also classifies the company nature as a trading company, creating a mixed classification.
CertificationsThe supplier reports ISO 9000 and ISO 9001 certifications for its management systems. These certifications provide explicit evidence of formal quality-management practices.
R&D capabilityThe supplier reports 41–50 years of total R&D-engineer experience and explicitly emphasizes R&D, continuous learning, and ongoing improvement. This supports an established technical-development orientation, though no specific patents, new products, or innovation results are listed.
Production capacityThe supplier is identified as a manufacturer/factory producing precision fasteners and parts, with more than 10 production lines and an annual production-output range stated in the records. Its product keywords include thread inserts, CNC machining, pogo pins, press-fit connectors, and self-clinching standoff nuts, indicating relevant manufacturing scope.
Product Q&A
Q:What materials are available for these fasteners?
A:
We offer Carbon Steel, Stainless Steel, Aluminum, Brass, and Aluminum Alloy according to customer requirements.
Q:Can the size be customized?
A:
Yes, we support Metric and Inch sizes, and can customize per your specific requirement.
Q:What is the standard lead time for orders?
A:
Standard product lead time is around 1-2 weeks, with samples welcome.
Q:Do you provide technical support?
A:
Yes, we provide technical support within a half-hour and online service 24 hours a day.
Q:What certifications do your products have?
A:
Our products follow ISO9001:2008 and hold SGS, RoHS, Material Certification, and PPAP.
Send Inquiry
*To:
Shenzhen Sandum Precision Parts Co., Ltd.
Shenzhen Sandum Precision Parts Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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