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Various Surface Finish Fastener Countersunk Concrete Screw with Curved Cut-Line Thread
US$0.03-0.19
1,000 Pieces
Sample price:US$20.00/piece.Request sample
Product profile
Customization
AvailableMaterial
Stainless/Carbon SteelType
Countersunk Concrete/Masonry ScrewModel NO.
csk concrete screwGroove
TorxConnection
Common ConnectionHead Style
Counter Sunk BoltStandard
DIN, GB, ANSI, BSW, JIS, GOST, ISOGrade
8.8, 10.9, 12.9Delivery
5-15 DaysPackag Color
CustomizableThread Standard
Unc/Unf/Unef/Uns/Bsw/Bsf/Metric Coarse/Metric FineThread Type
Hi-Low Thread,Single ThreadFinish
Zinc Yellow Plated,Stainless Steel,PlainCustom Order
Customization by Drawing/SampleODM/OEM
AvailableService
Custom-Made ServiceMaterial Test Certificate
HaveSample
Samples in Stock Are Free with Freight CollectPrice Terms
Fob/CFR/CIF/DDP/DAPColor
Zinc Plated, Zinc Yellow, Zinc Flakeor CustomizabQuality Control
100% Quality InspectionApplication2
Connection, Fastening,Building,ConstructionTransport Package
Bulk Pack Small BoxedSpecification
M7.5, LENGTH 52 - 212MMTrademark
QewitcoOrigin
ChinaHS Code
731816Production Capacity
10000ton/YearKey features
Superior Grip Design: Partial hi-low thread with three notches for enhanced pull-out resistance in masonry.
Anti-Slip Torx Drive: TX30 star-shaped socket minimizes bit deterioration and eliminates slippage during installation.
Corrosion Resistant Materials: Available in high-strength carbon steel grade 8.8 or stainless steel A2/A4.
Multi Surface Treatment: Yellow zinc plating, black oxide and raw stainless finishes for different anti-rust demands.
Certified Performance: ETA 05/0137 certified and meets ETAG 001 Appendix E requirements for concrete applications.
Efficient Chip Clearing: 120-degree spaced grooves at thread root effectively remove concrete debris.
Reduced Installation Force: Dual-height threading on initial 30mm segment lowers torque requirements by 30%.
Flat Countersunk Head: Fully embedded into wall surface without protrusion to avoid panel scratches.
Wide Application Range: Perfect for concrete, red brick, stone and other hard masonry substrates.
Comprehensive Quality Control: 100% visual inspection with Material Test Certificate provided for all orders.
Company profile
CertifiedBusiness Type: Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2003-12-05Average Response Time: ≤0.47hTerms of Payment: T/T
AI-Powered supplier vetting
SummaryThe supplier demonstrates established export experience, with 90% of sales from exports and 22 years of exporting. It has ISO9001:2015 certification, raw-material traceability, quality assurance, and 100% finished-product inspection, although inspection is performed by packing staff and only two quality inspectors are reported. Customization is broad, covering samples, designs, full customization, minor customization, and flexible customization. Service strengths include in-stock capability, stated lead times within 15 workdays in both peak and off-season, and multiple payment and quotation terms. Limitations include no overseas warehouse, showroom, agent, branch, or overseas service-country coverage, no Fortune 500 cooperation, no new products launched in the last year, one R&D engineer, no popular-brand OEM, and an undocumented corrective/preventive-action process. Financial credibility cannot be assessed because the provided financial figures are excluded from evaluation.
Supplier typeThe supplier is strongly export-oriented, reporting 90% export sales and 22 years of export experience. It can provide in-stock service and accepts FOB, CIF, CFR, and EXW terms, but reports no overseas warehouse, showroom, agent, branch, or overseas service-country coverage.
CertificationsThe supplier reports an ISO9001:2015 certificate for both sustainable development management and management systems, plus other product compliance or sustainability certifications. The specific additional certifications are not identified, so the evidence supports ISO9001 holding but not broader certification strength.
R&D capabilityThe supplier reports one R&D engineer and no new products launched during the previous year. It also reports no available SDK and no popular-brand OEM capability, which indicates limited documented innovation evidence.
Production capacityProduction-related evidence includes raw-material traceability, 100% finished-product inspection, quality assurance, four own-brand quality-control capabilities, inventory capacity, and lead times within 15 workdays in both peak and off-season. Only two quality inspectors are reported, and finished products are checked by packing staff, so production capability is positive but quality-control depth is limited.
Customization capabilityThe supplier explicitly supports customization from samples, customization from designs, full customization, minor customization, and flexible customization. This is direct evidence of broad customization capability.
Product Q&A
Q:Who are we?
A:
We are a factory based in Zhejiang, China, with over 20 years of experience in producing and exporting hardware fasteners.
Q:What products do you offer?
A:
We supply screws, bolts, nuts, washers, anchors,stamping parts and tool.
Q:Is the shank durable for repeated installation?
A:
Whole heat treatment improves toughness, not easy to break under heavy driving force.
Q:Do you provide samples? Are they free?
A:
Yes, we provide free samples for quality testing, but customers cover the express charges.
Q:Why choose countersunk head?
A:
The head is fully hidden inside substrates, no protruding edges to scratch decoration surfaces.
Send Inquiry
*To:
Qewitco Fasteners Co., Ltd
Qewitco Fasteners Co., Ltd*Content:
Supplier replies will be sent to your registered email
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