What materials are used for these screws?

Materials include Carbon Steel (C1018, C1022, etc.), Stainless Steel (SUS201, 304, 316), and Alloy Steel.

What is the warranty or quality guarantee?

We conduct a pre-production sample check and final inspection before shipment to guarantee quality.

What is the self-drilling mechanism?

The screw cuts a gap in the thread continuity to generate a flute and cutting edge, allowing it to tap its own hole.

Galvanized Roofing Plating Color Hexagon Self Drilling Screw for Wood

Name: Galvanized Roofing Plating Color Hexagon Self Drilling Screw for Wood
Brand: Tianjin Boya Metal Products Co., Ltd.
SKU: 1980140562

Tianjin, ChinaTianjin Boya Metal Products Co., Ltd.

US$1,000.00

1-24 Tons

US$950.00

25+ Tons

Sample price:US$10.00/kg.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

5.5*25mm

Groove

Hexagon

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, GB

Grade

12.9

MOQ

1 Ton

Samples

Free

Package

as Required

Market

South America, Middle East

Transport Package

Shipping by Sea

Specification

6.3*19mm

Trademark

boya

Origin

Tianjin

Production Capacity

50000ton/Year

Key features

Self-Drilling Capability: Taps its own hole in hard substrates like metal or hard plastics without pre-drilling.

High Strength Grade: Made from Carbon Steel with Grade 12.9 for superior durability and load-bearing capacity.

DIN7504 Standard: Complies with DIN7504k standard for consistent quality and international compatibility.

Customizable Packaging: Packing can be customized by client request, including small box, carton, and pallet options.

Wide Size Range: Available in sizes ST2.9 to ST6.3 and lengths 10-300mm to fit various application needs.

Versatile Surface Finish: Offers Galvanized, Paint, Power Coated, and Nickel finishes with various color options.

Fast Delivery: Factory located near Tianjin Port ensures punctual delivery and saved logistics costs.

Free Samples: Free samples are provided for quality verification before placing bulk orders.

Company profile

High Repeat Buyers ChoiceExhibition ExperienceFast DeliveryMinor Customization

Tianjin Boya Metal Products Co., Ltd.

Tianjin, China

Business Type: Manufacturer/Factory, Trading Company CertifiedR&D Capacity: OEM Service Available CertifiedCustomization Options: Customization from Designs, Full Customization, etc. CertifiedExport Year: 8 years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤5.77h

AI-Powered supplier vetting

SummaryTianjin Boya Metal Products Co., Ltd. is a China-based trading company established in 2017 with 18 employees and a stated business scope covering metal materials, wire mesh, hardware, building materials, and related products. The supplier reports access to wire and nail mills, advanced production equipment, and annual production capacity of approximately 50,000 tons, but its entity is identified as a trading company and associated companies are in wholesale and retail. It demonstrates customization options and OEM service for well-known brands, but does not provide 3D software design, ODM, SDK, or reported new-product development. Service-management controls are weakly documented: no written procedures or records were provided for service assessment, corrective actions, or complaint handling. It has no overseas warehouse, showroom, agent, or branch, but has participated in an offline trade fair. Financial information is only represented by year labels, without substantive financial results, so credibility...

Supplier typeThe supplier is explicitly identified as a trading company, with wholesale and retail as the associated-company industry and a broad import-export business scope for metal, hardware, construction, and related products. Although it describes its own wire and nail mills, the legal and business classification provided is Trading Company.

After-Sales capabilityThe supplier reports no written procedures or records for customer complaint handling, service-capability assessment, or corrective and preventive actions. It has six qualified service suppliers and supports stated quotation and payment terms, but the documented after-sales management system is insufficiently evidenced.

R&D capabilityThe supplier states that it is not a professional technical supplier, had no new products during the past year, and does not offer ODM, 3D software design, or SDK services. These explicit limitations indicate weak demonstrated innovation and technical-development capability.

Production capacityThe company describes advanced production equipment, its own wire and nail mills, and approximate annual capacity of 50,000 tons; it is located near Xingang Port and Tianjin Airport. However, the legal entity is classified as a trading company, so the extent of directly controlled production capability is not fully clear, while the stated capacity is positive evidence.

Customization capabilityThe supplier reports customization ranging from design-based and full customization to flexible and minor customization, and also states that it provides OEM services for well-known brands. It does not provide ODM, 3D software design, or SDK services, but the stated customization and OEM capabilities are explicit strengths.