How are self-drilling screws measured?

They are measured from the top of the head to the tip. Hex and hex washer head screws and bolts, although flat on the top and the bottom, are measured from the bottom of the head. From that point to the tip is the length of the screw. Self drilling screws are measured all the way to the end of the drill point tip.

What materials are available for these screws?

Material Stainless Steel,Alloy steel,Carbon Steel,Brass,Aluminum and So on.

What standards do your products comply with?

Standard GB, DIN, ISO, ANSI/ASTM, BS, BSW, JIS etc Non-standards OEM is available, according to drawing or samples.

Blue & White Zinc Cross Countersunk Head Self-Drilling Screws

Name: Blue & White Zinc Cross Countersunk Head Self-Drilling Screws
Brand: Tianjin Boya Metal Products Co., Ltd.
SKU: 1934696832

Tianjin, ChinaTianjin Boya Metal Products Co., Ltd.

US$0.001-0.50

1,000 Pieces

Sample price:US$1.00/piece.Request sample

Product profile

Customization

Available

Material

Carbon Steel

Type

Hexagon Head

Model NO.

Screw

Groove

Hexagon

Connection

Common Bolt

Head Style

Hexagonal

Standard

DIN, GB

Grade

4.8

Length

10mm-254mm

Dia Meter

M3.0-M6.0

Finish

Black/Grey Phosphated.Yellow/Blue Zinc Plated

MOQ

5 Ton

Sample

Free

Transport Package

Cartons+Plastic Bags

Specification

19mm-110mm

Trademark

BOYA

Origin

Tianjin

HS Code

7318140090

Production Capacity

30000 Ton Per Year

Key features

Customizable Dimensions: Length 10mm-254mm and Diameter M3.0-M6.0 available for specific needs.

Versatile Material Options: Available in Carbon Steel, Stainless Steel, Alloy Steel, Brass, and Aluminum.

Multiple Finish Choices: Options include Black/Grey Phosphated, Yellow/Blue Zinc Plated, and Plain.

Free Sample Provision: Free samples provided, with freight covered by customer or company based on cooperation.

Flexible Packaging: Custom packaging available for large orders; standard packing includes small boxes and cartons.

Professional Manufacturing: Specialized in fastener manufacturing with over 15 years of exporting experience.

Wide Application Range: Suitable for iron roofs, solar brackets, waterproof roofs, and polycarbonate construction.

Certified Quality: Products certified under ISO9001 and IATF16949 standards for reliability.

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: ≤4.40h

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.

Product Q&A

Q:Are you a manufacturing or trading company?

We are specialized in manufacturing fasteners and have exporting experience for more than 15 years.

Q:How long is your delivery time?

Generally it is 5-10 days if the goods are in stock. or it is 20-25 days if confirmed the sales contract

Q:Do you provide samples? Is it free or extra?

Yes, the sample will be provided for free if you need, but the freight will be covered by our customer. If we have cooperate, the freight will be covered by our company.

Q:What is your terms of payment?

Payment<=1000USD, 100% in advance; Payment>=1000USD, 30% T/T in advance ,balance before shipment.

Q:What is the advantage about your company?

Our company has professional team and professional production line.