What is the size range for these screws?

Dimensions range from 3mm to 16mm, and lengths are available from 10mm to 300mm. Custom sizes from 5mm to 20mm are also supported.

How are the products packed?

Packing options include small boxes with plastic bags, 25kgs bags or boxes, and bulk packing on pallets.

Hex Washer Head Wood Screw with EPDM Washer

Name: Hex Washer Head Wood Screw with EPDM Washer
Brand: WELLBOLT CO., LTD.
SKU: 855156215

Zhejiang, ChinaWELLBOLT CO., LTD.

US$0.01

10,000 Pieces

Product profile

Customization

Available

Material

Carbon Steel

Shape of Head

Hexagon

Model NO.

M8X50

Shape of Groove

Linear

Surface Finishing

Zinc Plated

Certification

ISO

Customized

Size

5mm-20mm, 3/16"-3/4"

Type

Hexagon Head

Head Style

Hex

Connection

Hex Washer Head Wood Screw

Grade

8.8

Transport Package

Approx 25kg/Carton, 36 Carton/Pallet.

Specification

DIN, GB, Jisb, ISO, ANSI/Asme B, W. S. W

Trademark

Origin

China

HS Code

7318120000

Production Capacity

3000 Tons Per Year

Key features

Customized Specifications: Available in sizes 5mm-20mm and grades up to 8.8 with customized head styles.

Diverse Surface Finishing: Options include zinc plating, black phosphate, HDG, nickel, and plain coatings.

High Strength Material: Made from carbon steel with grade 8.8 strength for durable performance.

ISO Certified Quality: Products meet ISO standards and undergo strict QC checks with Go/No Go Gauge.

Free Sample Availability: Free samples provided; customers only need to cover courier fees.

Fast Stock Delivery: Stock items can be delivered within 2 days after receiving payment.

Flexible Payment Terms: Accepts PayPal, Western Union, T/T, LC, and other secure payment methods.

Wide Size Range: Dimensions range from 3mm to 16mm, with lengths up to 300mm available.

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: ≤3.54hTerms 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:What is the delivery time for orders?

For stock items, delivery is within 2 days after payment. For mass cargo, production takes 30-45 days after receiving the deposit.

Q:Are samples free of charge?

Yes, samples are free. However, the customer is required to pay the courier fees.

Q:What are the payment terms?

For orders under 1000 USD, 100% advance payment via PayPal or Western Union. For orders over 1000 USD, 30% T/T in advance, balance against the copy of B/L.

Q:What materials and certifications do you offer?

We offer carbon steel and stainless steel materials. Our products are ISO certified and undergo strict quality control using Go/No Go Gauges.

Q:What surface finishing options are available?

Available finishes include plain, black, zinc plating, HDG, nickel, and phosphate black.