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We perform 100% inspection on all products, including visual and function checks.

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We offer shipping by Sea, Air, or Express (FedEx/UPS/DHL/TNT).

Factory Alloy Steel Black Oxide Coarse Thread ISO 7379 Class 12.9 Socket Shoulder Screw

Name: Factory Alloy Steel Black Oxide Coarse Thread ISO 7379 Class 12.9 Socket Shoulder Screw
Brand: Dongguan Zhengchen Hardware Co., Ltd.
SKU: 2074205375

Guangdong, ChinaDongguan Zhengchen Hardware Co., Ltd.

US$0.13

100 Pieces

Sample price:US$0.30/piece.Request sample

Product profile

Customization

Available

Price

Negotiated

Quality Control

100% Inspection

Model NO.

ZLMSB/ZLSMSB/ZLMSBG/ZLSMSBG/ZLSHMSBLMSBH/

Service

OEM/ODM

Lead Time

3-7 Days

Delivery Time

7 Days Around by FedEx/UPS/DHL/TNT

Delivery Way

by Sea,Air,Express

Transport Package

Poly Bag-Small Box-Carton with Label

Specification

Base on the quantity of goods

Trademark

Origin

China

HS Code

73181600

Production Capacity

3000 Units Per Day

Key features

High Strength Material: Made of Alloy Steel with Class 12.9 strength rating for durability.

Durable Coating: Features Black Oxide Coating for enhanced corrosion resistance.

OEM/ODM Service: Full customization available from samples, designs, or flexible requirements.

Strict Quality Control: 100% inspection process including visual and function checks.

Fast Lead Time: Production completed within 3-7 days for most orders.

Low MOQ: Minimum Order Quantity starts from just 1 piece.

Flexible Payment: Accepts LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

ISO Certified: Manufacturer holds ISO9001:2015 certification for quality management.

Company profile

In-stock CapacityFast DeliveryYears of Export ExperienceCustomization from Designs

Dongguan Zhengchen Hardware Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 11 years CertifiedNearest Port: Shenzhen PortAverage Response Time: ≤3.99h

AI-Powered supplier vetting

SummaryThe supplier is identified as a factory in Dongguan operating in manufacturing. It demonstrates substantial customization, OEM and ODM capabilities, independent R&D activity, and six R&D engineers responsible for technical support and new product development. Manufacturing support includes valid contracts with related subcontractors, inventory capability, and stated peak- and off-season lead times within 15 working days. Quality and service processes are documented, including finished-product inspection, corrective and preventive actions, and complaint handling. The supplier has exported for 11 years, with exports representing 11%–20% of total sales, and is located near Shenzhen Port. Evidence is insufficient to confirm certifications, detailed after-sales performance, or financial credibility. The supplier lacks an available SDK, overseas warehouse, and overseas showroom.

Supplier typeThe supplier is explicitly identified as a factory located in Dongguan, and its associated companies operate in manufacturing. This supports classification as a manufacturing supplier rather than a trading-only company.

After-Sales capabilityThe supplier has six R&D engineers whose responsibilities include technical support for production and after-sales service. It also has documented complaint-handling and corrective/preventive-action procedures with records, but no specific after-sales service performance or coverage details are provided.

R&D capabilityThe supplier reports new products in the past year, provides ODM services, and has an independent R&D department. Six R&D engineers handle technical confirmation, production and after-sales support, and new product development; however, no SDK is available.

Production capacityProduction support is evidenced by six quality-control staff, four quality-control test equipment units, valid contracts with associated subcontractors, inventory capability, and stated lead times within 15 working days in both peak and off seasons. The supplier also reports 172 qualified service-capability suppliers, although detailed production capacity volumes are not provided.

Customization capabilityThe supplier explicitly offers customization from samples and designs, full, minor, and flexible customization. It also provides customized processing of non-standard parts and OEM one-stop solutions, demonstrating broad customization coverage.

Client casesThe supplier states that it provides OEM services for well-known brands and describes delivering complete solutions and non-standard-part processing for customer needs. No named customers, project examples, or independently verifiable case details are supplied.