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Heavy Cast Curved Washer OEM ASTM A153 Hot Dip Galvanized Ductile Iron Heavy Duty For Insulator Curved Surface Mounting
US$2.00
10,000 Pieces
Sample price:US$20.00/piece.Request sample
Product profile
Customization
AvailableTechnics
Cold PressingStandard
Non-GBModel NO.
Heavy Cast Curved WasherUsage
Substation Fittings, Line FittingsType
FastenersGrade
Class 4.8 & 6.8, Class 8.8, Class 10.9 & 12.9Size
M3-M100Finish
Zinc Plated/Hot DIP GalvanizedMaterial
Low Carbon Steel/Medium Carbon Steel/Alloy SteelDelivery Time
Normally in 30-40 Days.Quality
100% Professional TestService
Customized OEM ODM ServiceTransport Package
Customized BasedSpecification
Customized BasedTrademark
SOKUNOrigin
ChinaKey features
Cast as ductile iron with a casting test report and heat number traceability documenting graphite structure and tensile values, so OEM insulator hardware buyers can qualify each heat.
Heavy curved washer with a machined concave seat radius-matched to insulator cap surfaces for M16 and larger, hot dip galvanized to ASTM A153 with coating mass verified per batch.
Insulator curved surfaces present a convex seat that flat or thin washers cannot follow, so bearing pressure concentrates on one edge and can chip porcelain or polymer hardware.
The heavy ductile iron washer conforms to the insulator curvature, spreads seating load across the cap and keeps the insulator axis aligned under string tension and swing.
OEM and ODM castings are made to drawing with pattern tooling, heat treated for ductility, shot blasted, machined on the curved seat and hot dip galvanized to ASTM A153.
Produced under ISO 9001 with ductile iron casting test reports, ASTM A153 coating certificates and dimensional data issued per lot for insulator hardware programs.
Every lot is inspected for seat radius, hole size and coating adhesion before release, and heat numbers are recorded so reports stay matched to the washers delivered.
Parts are supplied loose or kitted with insulator pins, bolts and nuts for curved surface mounting, packed in cartons or pallets with protective wrapping.
MOQ from 500 pieces with free approval samples, a 20 to 35 day lead time, factory direct pricing and OEM and ODM drawing support for insulator hardware buyers.
10
Company profile
CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 15 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤5.00h
AI-Powered supplier vetting
SummarySokun is a limited company with 21 employees, related companies, and product coverage including fasteners, machined parts, and stamping parts. It supports customization from samples and designs, offers ODM services, and reports OEM service for well-known brands. Quality processes include quality assurance, documented inspection instructions, and complaint-handling records, although finished-product inspection is random and only one quality inspector is reported. Production-related strengths include in-stock capability, CNC and punching equipment, and one-month stated lead times in both peak and off-season periods. Key limitations are the absence of a valid manufacturing-capacity contract with related subcontractors, no overseas warehouse, branches, agents, or showrooms, and no documented R&D audit materials, new products in the past year, or R&D patents. Financial credibility cannot be determined from the provided information.
After-Sales capabilityThe supplier has a clear customer-complaint procedure with followed records and accepts several quotation and payment terms. However, it has no overseas warehouse, showroom, agent, or branch, and reports zero countries with overseas services, limiting evidence of localized after-sales support.
R&D capabilityThe supplier provides ODM and multiple customization-based design services, but reports no new products during the past year, no available SDK, no R&D audit documentation, and zero R&D patents. These facts indicate design support but limited documented evidence of independent innovation.
Production capacityProduction evidence includes CNC and punching equipment, in-stock capability, one-month lead times in both peak and off-season, and a product scope aligned with machined and stamping parts. Nevertheless, there is no valid manufacturing-capacity contract with related subcontractors, which creates a documented capacity-governance weakness.
Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, flexible customization, and minor customization, and also offers ODM services. This is direct evidence of broad customization capability.
Product Q&A
Q:1. What types of power line hardware and power fittings do you supply?
A:
We supply a wide range of power line hardware and power fittings for transmission and distribution systems, including suspension
clamps, strain clamps, connecting hardware, pole line hardware, U bolts, eye bolts, grounding hardware, guying hardware, anchors,
insulator fittings, OPGW/ADSS fittings, and related utility fasteners.
We also support custom products based on drawings, samples, and project specifications.
Q:2. Do you manufacture custom and non-standard power line hardware?
A:
Yes. We manufacture custom and non-standard power line hardware according to customer drawings, samples, technical specifications,
and application requirements.
Our engineering team can review dimensions, materials, tolerances, surface treatment, and manufacturing feasibility before
production. OEM and ODM services are available for utilities, EPC contractors, equipment manufacturers, wholesalers, and
distributors.
Q:3. What power line fasteners can you manufacture?
A:
We manufacture a broad range of power line fasteners and pole line bolts, including U bolts, pole line square head machine bolts,
carriage bolts, double arming bolts, eye bolts, spool bolts, threaded rods, nuts, washers, and other galvanized fasteners used in
utility structures.
Custom dimensions, threads, lengths, and configurations can also be produced according to drawings or project requirements.
Q:4. Can you supply complete power line hardware according to a BOM or project list?
A:
Yes. We can supply mixed power line hardware based on BOM lists, drawings, or project specifications.
Different products such as clamps, bolts, shackles, link plates, eye fittings, grounding components, pole line hardware, and
accessories can be consolidated into one order and shipment.
This helps EPC contractors, utilities, and distributors simplify purchasing and reduce the number of suppliers required for a
project.
Q:5. What information do you need to quote power line hardware?
A:
For an accurate quotation, please provide as much of the following information as possible:
* Product name or BOM list
* Drawings in PDF, CAD, DWG, STEP, or similar formats
* Dimensions and thread specifications
* Material requirements
* Surface treatment or galvanizing requirements
* Mechanical or load requirements
* Applicable standard, if required
* Quantity and packaging requirements
If complete specifications are not available, you can also send photos or samples for technical evaluation.
Send Inquiry
*To:
Ningbo Yinzhou Sokun Import and Export Co., Ltd.
Ningbo Yinzhou Sokun Import and Export Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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