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Black Phosphorus Countersunk Head Self Drilling Screws Metric Drywall Screws
US$1,050.00-1,200.00
1 Ton
Sample price:US$1.00/piece.Request sample
Product profile
Customization
AvailableMaterial
Carbon SteelType
Countersunk HeadModel NO.
ScrewGroove
CrossConnection
Common BoltHead Style
Counter Sunk BoltStandard
GBGrade
4.8Name
Drilling ScrewFinish
Black PhosphatedCertificate
YesColor
SilverySample
FreeDelivery Time
15-20 DaysMOQ
1 TonTransport Package
Normal Packing: 25kgs/CartonSpecification
13mm-152mmTrademark
OEMOrigin
ChinaHS Code
7318130000Production Capacity
5000 Ton/MonthKey features
Black Phosphated Finish: Carbon steel screws with black phosphated surface treatment for durability.
Wide Size Range: Available in diameters 3.5mm-4.8mm and lengths 13mm-152mm.
Self-Drilling Design: Countersunk head design allows direct drilling into concrete walls.
Flexible Packaging: Options for 1000/500 pcs per box or bulk packing in 15-20kg cartons.
Competitive Pricing: High quality construction fasteners offered at competitive prices.
Fast Delivery: Standard delivery time is 15-20 days for orders.
Expert Manufacturer: Years of experience specializing in high-quality fasteners and hardware.
Responsive Support: Prompt after-sales service to solve any small problems quickly.
Company profile

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2012-12-09Nearest Port: Guangzhou, Qingdao, NingboAverage Response Time: ≤15hTerms of Payment: LC, T/T, Western Union, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, FCA, EXW, Others
AI-Powered supplier vetting
SummaryGuangzhou 247 International Co., Ltd is identified as a China-based limited trading company and manufacturer/factory, founded in 2000, with products centered on wire mesh, fasteners, welding supplies, safety products, and related hardware. The supplier reports more than 10 production lines, 6–10 quality-control staff, 6–10 years of R&D engineer experience, and broad export coverage, with exports representing 90% of total sales. It states peak-season fulfillment within 15 workdays and off-peak lead time of one month. Multiple management-system certifications are listed, but the provided information does not verify certificate validity or scope. Evidence is insufficient to assess after-sales service, customization, financial credibility, or customer cases. The records also contain an inconsistency: one slice identifies this Guangzhou supplier, while another separately describes LongXL, a United States-based FPV cable company; the latter should not be attributed to Guangzhou 247.
Supplier typeThe supplier is described as a trading company in Guangzhou’s Haizhu District, while its business entity type is listed as both “Trading Company” and “Manufacturer/Factory.” Its description states that it engages in wholesale and manufacture, indicating a mixed trading and manufacturing profile.
CertificationsThe supplier lists BSCI, ISO 9000, ISO 9001, ISO 14001, ISO 14000, ISO 20000, ISO 14064, TS 16949, OHSAS/OHSMS 18001, HSE, GMP, and QC 080000 certifications. However, no certificate numbers, issuing bodies, validity dates, or applicable scopes are provided.
R&D capabilityThe supplier reports 6–10 years of total experience among its R&D engineers. This supports the existence of experienced R&D personnel, but no evidence is provided regarding patents, new product development, proprietary technology, or innovation results.
Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, peak-season fulfillment within 15 workdays, and an off-peak lead time of one month. Its stated wholesale-and-manufacturing profile and wire-mesh product description further support operational production capability.
Product Q&A
Q:What is the material of these screws?
A:
The screws are made of C1022A carbon steel with a black phosphated finish.
Q:What are the available sizes?
A:
Diameters range from 3.5mm to 4.8mm, and lengths range from 13mm to 152mm.
Q:What is the minimum order quantity?
A:
The MOQ is 1 Ton.
Q:How long is the delivery time?
A:
The standard delivery time is 15-20 days.
Q:Can I get a free sample?
A:
Yes, free samples are available upon request.
Send Inquiry
*To:
Guangzhou 247 International Co., Ltd
Guangzhou 247 International Co., Ltd*Content:
Supplier replies will be sent to your registered email
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