What is your delivery time?

Standard parts: 7-45 days. Non-standard parts: 25-45 days. We will make the delivery as soon as possible with guaranteed quality.

How to custom-made (OEM/ODM)?

If you have a new product drawing or a sample, please send it to us, and we can custom-make the hardware as per your requirements.

Self Locking Bolts

Name: Plastic Capped Water Proof Galvanized Round Head 4 Rib Silo Bolt / Guardrail Bolt / Self Locking Bolts
Brand: WELLBOLT CO., LTD.
SKU: 2098495895

Zhejiang, ChinaWELLBOLT CO., LTD.

US$0.08

3,000-9,999 Pieces

US$0.05

10,000-49,999 Pieces

US$0.03

50,000-99,999 Pieces

US$0.02

100,000+ Pieces

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Round Head

Model NO.

M6-M30

Groove

4 Rib

Connection

Common Bolt

Head Style

Round

Standard

DIN, GB, ANSI, BSW, JIS

Grade

8.8

Diameter

6mm-30mm

Length

10mm-300mm

Transport Package

25 Kg Per Carton, 36 Cartons/Pallet.

Specification

M6-M30

Trademark

Wellbolt

Origin

China

HS Code

7318150000

Production Capacity

3000 Tons Per Year

Key features

Wide Material Selection: Available in Carbon Steel, Alloy Steel, Stainless Steel, Aluminum, and Brass.

Customizable Dimensions: Diameter 6mm-30mm and Length 10mm-300mm can be customized per requirements.

High Precision Parts: Strictly follows drawing tolerances to provide high precision custom parts.

ISO9001 Quality Control: All processes adhere to ISO9001:2008 with strict quality control from production to delivery.

OEM/ODM Service: Supports custom-made hardware based on customer drawings or samples.

Diverse Coating Options: Offers Galvanized, Black Oxide, Dacromet, and other coating treatments.

Global Export Experience: Exported to over 60 countries since 2010 with 10+ years of industry experience.

Flexible Payment Terms: Accepts T/T, LC, D/P, PayPal, Western Union, and Money Gram.

Company profile

Importers and ExportersHigh Repeat Buyers Choice

WELLBOLT CO., LTD.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2010-03-01Nearest Port: shanghaiAverage Response Time: ≤4.09hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DDP, EXW

AI-Powered supplier vetting

SummaryWELLBOLT CO., LTD. is identified as a Chinese manufacturer/factory producing fasteners and metal products. It has professional technical, 3D design, ODM, OEM, and sample/design customization capabilities, but reported no new products in the past year and no available SDK. Service management is supported by written procedures and records for supplier assessment, corrective actions, and complaint handling. The company holds a valid import/export license and has six years of export experience, with exports representing 51%–70% of total sales. However, it reports no overseas warehouses, showrooms, agents/branches, or offline trade-show participation, and overseas service coverage is recorded as zero countries. Financial records are referenced for recent years, but no financial results are provided. Certification holdings, production scale, and customer cases are not sufficiently documented; employee count is six, but this alone does not establish production capacity.

Supplier typeWELLBOLT CO., LTD. is explicitly identified as a manufacturer/factory and as a fasteners and metal production manufacturer and exporter located in Haiyan County, Zhejiang, China. It is a limited company and is not part of a larger company group.

CertificationsThe supplier is stated to possess a valid import/export license. No other certifications are identified in the provided information, so broader certification coverage cannot be assessed.

After-Sales capabilityThe supplier has written procedures and followed records for customer complaint handling, corrective and preventive actions, and service-capability assessment. However, it has no overseas warehouse, showroom, agent or branch, and its overseas service coverage is recorded as zero countries, limiting evidence of international after-sales presence.

R&D capabilityThe supplier provides professional technical R&D support, 3D software design, ODM services, and customization from samples or designs. However, it reported no new products in the past year and no available SDK, so evidence supports design and development services but not recent product innovation.

Production capacityThe supplier is explicitly classified as a manufacturer/factory producing fasteners and metal products, with export licensing and six years of export experience. Nevertheless, the employee count is six and no production capacity, equipment, output, or throughput data is provided, preventing a full assessment of manufacturing scale.

Customization capabilityThe supplier explicitly offers customization from samples and designs, 3D software design services, ODM services, and OEM services for popular brands. These statements provide direct evidence of product and design customization capability.

Client casesThe supplier states that it provides OEM services for popular brands, which indicates experience serving brand customers. No customer names, project details, order history, or verifiable case studies are provided.

Product Q&A

Q:Why choose Wellbolt?

We provide first-class services in supplying quality fasteners while minimizing costs. Our mission is professional customer service and technological innovation, aiming to be your first choice and friend in the industry.

Q:How is quality ensured?

All processes strictly adhere to ISO9001:2008 procedures. We have strict quality control from producing to delivery and strong technology support with managers familiar with modern management concepts.

Q:What if I cannot find the product on your website?

You can send pictures, photos, or drawings by email for us to check. We develop new models every month. Alternatively, you can send samples by DHL/TNT, and we will develop the new model especially for you.

Q:Can you strictly follow the tolerance on the drawing?

Yes, we can. We provide high precision parts and make the parts exactly as your drawing.

Q:How should I order and make payment?

By T/T. For samples, 100% payment with the order. For production, 30% paid as a deposit by T/T before production arrangement, and the balance to be paid before shipment.