What are the lead times for delivery?

The average lead time is one month for both peak and off-peak seasons.

Do you offer OEM and ODM services?

Yes, we provide full OEM and ODM services, including customization from designs and samples.

What certifications do the products have?

Our products are certified with ISO, GS, RoHS, and CE standards.

Fine Thread

Name: Drywall Screws Assortment Kit M3.5/M4.2/M4.8 Black Phosphate Coarse/Fine Thread
Brand: QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.
SKU: 2160472072

Shandong, ChinaQINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.

US$800.00-1,000.00

3 Tons

Sample price:US$0.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Shape of Head

Round

Model NO.

2026050803

Surface Finishing

Zinc Plated

Certification

ISO, GS, RoHS, CE

Customized

Thread

Fine or Coarse Thread

Lengtgh

Customization Based on Customer Needs

Width

Customization Based on Customer Needs

Diameter

Customization Based on Customer Needs

Packing

Customization Based on Customer Needs

Transport Package

Bulk in Carton or Box

Specification

Dia. 3-5mm

Trademark

Origin

China

HS Code

7318140000

Production Capacity

1000ton/Month

Key features

Customized Dimensions: Length, width, and diameter can be customized based on customer needs.

Customized Thread Type: Available in both fine and coarse thread options for specific applications.

Carbon Steel Material: Made from hardened Carbon Steel C1022A for durability and strength.

Versatile Applications: Suitable for gypsum board, light partition walls, and ceiling installations.

Multiple Surface Treatments: Options include black/grey phosphated, galvanized, HDG, zinc, and painted finishes.

High Hardness Rating: Surface hardness ranges from 560-653HV with core hardness of 289-449HV.

Salt Spray Resistance: Passes 48-hour salt spray test ensuring corrosion resistance.

OEM and ODM Services: Full customization available from designs and samples with professional support.

Company profile

Importers and ExportersHigh Repeat Buyers ChoicePatents AwardedNational Award received

QINGDAO ZONGYU INDUSTRY AND TRADE CO., LTD.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs CertifiedExport Year: 5 years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤3.55h

AI-Powered supplier vetting

SummaryThe supplier is a Qingdao-based manufacturer and trading company with a broad registered business scope covering mechanical equipment, metal products, automotive parts, plastic products, building materials, and import/export activities. It reports ISO 9001, 14001, and 18001 certification history, eight production lines, 50 quality-control staff, and stated production capacity for several nail categories. The supplier offers customization from designs and samples, ODM, and OEM services for well-known brands. However, it reported no new products in the past year, lacks overseas warehouses, showrooms, agents, or branches, and has weak documented service-management controls: no written service-assessment or corrective-action procedures and no complaint-handling records. Financial information is identified for 2021–2023, but the slices do not provide performance values, so financial credibility cannot be fully assessed.

Supplier typeThe supplier operates as a manufacturer and trading company: its registered scope includes sales and import/export activities, while its factory information reports eight production lines and product-specific output. Its company description also states more than 20 years of development and business relationships across Europe, America, Southeast Asia, and Africa.

CertificationsThe supplier states that it passed ISO 9001, ISO 14001, and ISO 18001 international management-system certifications in 2001. This is explicit certification evidence, although the slice does not provide current certificate validity or renewal details.

After-Sales capabilityThe supplier has a complaint-handling procedure but no written complaint records, and it lacks written procedures or records for service-capability assessment and corrective/preventive actions. It has participated in the Canton Fair but reports no overseas warehouses, showrooms, agents, or branches, limiting evidence of structured overseas after-sales support.

R&D capabilityThe supplier reports ODM capability, an available SDK, and one internationally recognized design award. However, it also states that no new products were developed in the past year; this indicates some design and development resources but limited recent product-innovation evidence.

Production capacityThe supplier reports eight production lines, 50 quality-control staff, and stated annual outputs of 10,000 tons each for U-type, roofing, twisted, clout, and common nails. It also reports a one-month average lead time in both peak and off-season, supporting evidence of established production capacity, though the stated output figures are supplier-reported and not independently verified.

Customization capabilityThe supplier explicitly provides customization from customer designs and samples, ODM services, and OEM services for well-known brands. These statements directly demonstrate multiple forms of customization and contract-manufacturing capability.